GL850供应商报价哪里找芯片批发报价原理和应用中文资料-中国IC网-芯三七

Genesys Logic, Inc.

GL850

USB 2.0

4-PORT HUB Controller

Datasheet

Revision 1.11

Jun. 25, 2003

GL850 USB 2.0 4-Port HUB Controller

Copyright:

reproduced in any form or by any means without prior written consent of Genesys Logic Inc..

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Trademarks:

is a registrated trademark of Genesys Logic Inc..

All trademarks are the properties of their respective owners.

Office:

Genesys Logic, Inc.

12F, No. 205, Sec. 3, Beishin Rd., Shindian City,

Taipei, Taiwan

Tel: (886-2) 8913-1888

Fax: (886-2) 6629-6168

http://www.genesyslogic.com

Page 2

GL850 USB 2.0 4-Port HUB Controller

Revision History

Revision

Date

Description

1.00

05/22/2003 First formal release

Add Bus Power statement

1.10

1.11

06/11/2003

06/25/2003

Gang/Individual mode setting modified

Add “4 port” bus power statement

Page 3

GL850 USB 2.0 4-Port HUB Controller

TABLE OF CONTENTS

CHAPTER 1 GENERAL DESCRIPTION........................................................................ 9

CHAPTER 2 FEATURES................................................................................................. 10

CHAPTER 3 PIN ASSIGNMENT.................................................................................... 11

3.1 PINOUTS ....................................................................................................................... 11

3.2 PIN LIST........................................................................................................................ 12

3.3 PIN DESCRIPTIONS ....................................................................................................... 13

CHAPTER 4 BLOCK DIAGRAM................................................................................... 15

CHAPTER 5 FUNCTION DESCRIPTION .................................................................... 16

5.1 GENERAL...................................................................................................................... 16

5.1.1 USPORT Transceiver......................................................................................... 16

5.1.2 PLL (Phase Lock Loop) ..................................................................................... 16

5.1.3 FRTIMER ........................................................................................................... 16

5.1.4 µC ......................................................................................................................... 16

5.1.5 UTM (USB2.0 Transceiver Macrocell Interface) ............................................ 16

5.1.6 USPORT logic..................................................................................................... 16

5.1.7 SIE (Serial Interface Engine)............................................................................. 16

5.1.8 Control/Status register....................................................................................... 16

5.1.9 REPEATER ........................................................................................................ 17

5.1.10 TT (Transaction Translator) ........................................................................... 17

5.1.11 REPEATER/TT routing logic ......................................................................... 17

5.1.11.1 Connected to 1.1 Host/Hub ...................................................................... 17

5.1.11.2 Connected to USB2.0 Host/Hub .............................................................. 18

5.1.12 DSPORT logic................................................................................................... 18

5.1.13 DSPORT Transceiver....................................................................................... 18

5.2 CONFIGURATION AND I/O SETTINGS .......................................................................... 19

5.2.1 RESET# Setting .................................................................................................. 19

5.2.2 PGANG/SUSPND Setting .................................................................................. 20

5.2.3 SELF/BUS Power Setting .................................................................................. 21

5.2.4 LED Connections................................................................................................ 22

5.2.5 EEPROM Setting................................................................................................ 22

5.3 USB PROTOCOLS......................................................................................................... 23

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GL850 USB 2.0 4-Port HUB Controller

5.3.1 Host Commands and Hub Answers.................................................................. 24

5.3.1.1 Standard Requests ...................................................................................... 24

5.3.1.2 Hub Class Requests .................................................................................... 25

5.4 DESCRIPTORS............................................................................................................... 27

5.4.1 Full Speed Case................................................................................................... 27

5.4.1.1 Device Descriptor........................................................................................ 27

5.4.1.2 Device Qualifier Descriptor ....................................................................... 28

5.4.1.3 Configuration Descriptor........................................................................... 28

5.4.1.4 Interface Descriptor.................................................................................... 29

5.4.1.5 Endpoint Descriptor ................................................................................... 29

5.4.1.6 Other Speed Configuration Descriptor..................................................... 30

5.4.1.7 Interface Descriptor combined with Other Speed Configuration

Descriptor .................................................................................................... 30

5.4.1.8 Endpoint Descriptor combined with Other Speed Configuration

Descriptor .................................................................................................... 31

5.4.1.9 String Descriptor......................................................................................... 31

5.4.2 High Speed Case ................................................................................................. 32

5.4.2.1 Device Descriptor........................................................................................ 32

5.4.2.2 Device Qualifier Descriptor ....................................................................... 33

5.4.2.3 Configuration Descriptor........................................................................... 33

5.4.2.4 Interface Descriptor.................................................................................... 34

5.4.2.5 Endpoint Descriptor in Configuration Descriptor .................................. 34

5.4.2.6 Other Speed Configuration Descriptor..................................................... 35

5.4.2.7 Interface Descriptor in Other Speed Configuration Descriptor............. 35

5.4.2.8 Endpoint Descriptor in Other Speed Configuration Descriptor............ 36

5.4.2.9 String Descriptor......................................................................................... 36

5.4.3 Hub Class Descriptor ......................................................................................... 37

CHAPTER 6 ELECTRICAL CHARACTERISTICS.................................................... 38

6.1 MAXIMUM RATINGS .................................................................................................... 38

6.2 DC CHARACTERISTICS................................................................................................ 38

CHAPTER 7 PACKAGE DIMENSION.......................................................................... 40

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GL850 USB 2.0 4-Port HUB Controller

LIST OF FIGURES

FIGURE 3.1 - PINOUT DIAGRAM ........................................................................................ 11

FIGURE 4.1 - BLOCK DIAGRAM......................................................................................... 15

FIGURE 5.1 - OPERATING IN USB1.1 SCHEME.................................................................. 17

FIGURE 5.2 - OPERATING IN USB2.0 SCHEME.................................................................. 18

FIGURE 5.3 - RESET# (EXTERNAL RESET) SETTING AND APPLICATION........................ 19

FIGURE 5.4 - POWER ON SEQUENCE OF GL850 ................................................................ 20

FIGURE 5.5 - TIMING OF PGANG/SUSPND STRAPPING................................................. 20

FIGURE 5.6 - GANG MODE SETTING ............................................................................... 21

FIGURE 5.7 - SELF/BUS POWER SETTING ...................................................................... 21

FIGURE 5.8 - LED CONNECTION ...................................................................................... 22

FIGURE 5.9 - SCHEMATICS BETWEEN GL850 AND 93C46............................................... 23

FIGURE 7.1 - GL850 64 PIN LQFP PACKAGE .................................................................. 40

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GL850 USB 2.0 4-Port HUB Controller

LIST OF TABLES

TABLE 3.1 - PIN LIST ......................................................................................................... 12

TABLE 3.2 - PIN DESCRIPTIONS......................................................................................... 13

TABLE 5.1 - 93C46 CONFIGURATION................................................................................ 22

TABLE 5.2 - STANDARD REQUEST LIST............................................................................. 24

TABLE 5.3 - HUB CLASS REQUESTS LIST.......................................................................... 25

TABLE 5.4 - DEVICE DESCRIPTOR FOR FULL SPEED........................................................ 27

TABLE 5.5 - DEVICE QUALIFIER FOR FULL SPEED........................................................... 28

TABLE 5.6 - CONFIGURATION DESCRIPTOR FOR FULL SPEED......................................... 28

TABLE 5.7 - INTERFACE DESCRIPTOR FOR FULL SPEED.................................................. 29

TABLE 5.8 - ENDPOINT DESCRIPTOR FOR FULL SPEED.................................................... 29

TABLE 5.9 - OTHER SPEED CONFIGURATION DESCRIPTOR FOR FULL SPEED ................ 30

TABLE 5.10 - OTHER SPEED INTERFACE DESCRIPTOR FOR FULL SPEED........................ 30

TABLE 5.11 - OTHER SPEED ENDPOINT DESCRIPTOR FOR FULL SPEED ......................... 31

TABLE 5.12 - STRING INDEX0 FOR FULL SPEED............................................................... 31

TABLE 5.13 - STRING INDEX1 FOR FULL SPEED............................................................... 31

TABLE 5.14 - STRING INDEX2 FOR FULL SPEED............................................................... 32

TABLE 5.15 - DEVICE DESCRIPTOR FOR HIGH SPEED...................................................... 32

TABLE 5.16 - DEVICE QUALIFIER FOR HIGH SPEED ........................................................ 33

TABLE 5.17 - CONFIGURATION DESCRIPTOR FOR HIGH SPEED ...................................... 33

TABLE 5.18 - INTERFACE DESCRIPTOR FOR HIGH SPEED................................................ 34

TABLE 5.19 - ENDPOINT DESCRIPTOR FOR HIGH SPEED ................................................. 34

TABLE 5.20 - OTHER SPEED CONFIGURATION DESCRIPTOR FOR HIHG SPEED .............. 35

TABLE 5.21 - OTHER SPEED INTERFACE DESCRIPTOR FOR HIGH SPEED ....................... 35

TABLE 5.22 - OTHER SPEED ENDPOINT DESCRIPTOR FOR HIGH SPEED......................... 36

TABLE 5.23 - STRING INDEX0 FOR HIGH SPEED............................................................... 36

TABLE 5.24 - STRING INDEX1 FOR HIGH SPEED............................................................... 36

TABLE 5.25 - STRING INDEX2 FOR HIGH SPEED............................................................... 36

TABLE 5.26 - HUB CLASS DESCRIPTOR ............................................................................ 37

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GL850 USB 2.0 4-Port HUB Controller

TABLE 6.1 - MAXIMUM RATINGS ...................................................................................... 38

TABLE 6.2 - DC CHARACTERISTICS EXCEPT USB SIGNALS ........................................... 38

TABLE 6.3 - DC CHARACTERISTICS OF USB SIGNALS UNDER FS/LS MODE................. 38

TABLE 6.4 - DC CHARACTERISTICS OF USB SIGNALS UNDER HS MODE...................... 39

Page 8

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 1 GENERAL DESCRIPTION

GL850 is a 4-port standard Universal Serial Bus (USB) hub controller complies with Universal Serial Bus

Specification Revision 2.0. GL850 can be connected to an USB1.1 host/hub or an USB2.0 host/hub. When

GL850 is connected to an USB1.1 host/hub, it works just like an USB1.1 hub; the upstream port will operate

in full-speed (FS) and the downstream port can operate in full-speed or low-speed (LS). When GL850 is

connected to an USB2.0 host/hub, it works as an USB2.0 hub; the upstream port will operate in high-speed

(HS) and the downstream port can operate in high-speed, full-speed, or low-speed. The bandwidths of high

speed, full speed, and low speed are 480 Mbps, 12 Mbps, and 1.5 Mbps respectively.

GL850 embeds an 8-bit RISC processor to manipulate the control/status registers and responds to the requests

from USB host. Firmware of GL850 will control its general purpose I/O (GPIO) to access the external

EEPROM and then respond to the host the customized PID and VID configured in the external EEPROM.

GL850 responds to the host the default settings in the internal ROM if there exists no external EEPROM.

GL850 is designed for customers with much flexibility. Customers can easily design GL850 as 4-port self/bus

powered, individual/ganged mode, by setting the I/O pins of GL850 (Ref. to Chapter 5). The more

complicated settings such as PID, VID, and number of downstream ports settings are easily achieved by

programming the external EEPROM.

TT (transaction translator) is the main traffic control engine in an USB2.0 hub to handle the unbalanced traffic

speed between the upstream port and the downstream ports. GL850 adopts single TT architecture, which

shares the same TT buffer for all downstream devices.

Each downstream port of GL850 supports two-color (green/amber) status LEDs to indicate normal/abnormal

status. The downstream ports of GL850 can be configured as individual mode or gang mode (4 ports as a

group) for power management. Gang mode is very helpful for cost consideration, since we can use one

poly-fuse, but not expensive power switch chips, to detect over current.

GL850 passes the current requirement (< 2.5mA) for bus-power mode when being suspended. The current

consumption is smaller than 100mA for the GL850 silicon itself. The above requirements are necessary for a

4-port bus power hub. Under adequate PCB designing, GL850 provide a good choice for customers as a 4-port

bus powered hub. Besides, GL850 can switch automatically between self-power mode and bus-power mode

without re-plugging into the PC host. The slew rate control circuits and the power fail detection circuits inside

this chip give better ESD and EMI abilities to GL850.

GL850 is designed mainly for stand-alone hub. It can also be integrated into PC motherboard or any other

compound devices to support USB hub function.

Page 9

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 2 FEATURES

•

Compliant to USB specification Revision 2.0

−

4 downstream ports

Upstream port supports both high-speed (HS) and full-speed (FS) traffic

Downstream ports support HS, FS, and low-speed (LS) traffic

1 control pipe (endpoint 0, 64-byte data payload) and 1 interrupt pipe (endpoint 1, 1-byte data

payload)

−

Backward compatible to USB specification Revision 1.1

•

On-chip 8-bit micro-processor

−

RISC-like architecture

USB optimized instruction set

Dual cycle instruction execution

Performance: 6 MIPS @ 12MHz

With 64-byte RAM and 2K internal ROM

Support customized PID, VID by reading external EEPROM

−

Support downstream port configuration by reading external EEPROM

•

Single Transaction Translator (TT) architecture

−

Single TT shares the same TT control logics for all downstream port devices. This is the most cost

effective solution for TT

•

Each downstream port supports two-color status indicator, with automatic and manual modes compliant to

USB specification Revision 2.0

Support both individual and gang modes of power management and over-current detection for

downstream ports

•

Conform to bus power requirements

Automatic switching between self-powered and bus-powered modes

Integrated USB2.0 transceiver

0.35um CMOS technology

PLL embedded with external 12 MHz crystal

Operate on 3.3 Volts

Improved output drivers with slew-rate control for EMI reduction

Internal power-fail detection for ESD recovery

64-pin LQFP package

Applications:

−

Stand-alone USB hub

PC motherboard USB hub, Ducking of notebook

Any compound device to support USB HUB function

Page 10

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 3 PIN ASSIGNMENT

3.1 Pinouts

48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

AMBER2

PSELF

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

DPH4

DMH4

DM4

DGND

DVDD

AGND

AVDD

DP3

PGANG/SUSPND

OVCUR2#

PWREN2#

OVCUR1#

PWREN1#

DGND

DPH3

DMH3

DM3

GL850

AGND

AVDD

XTAL2

XTAL1

AGND

AVDD

RREF

DVDD

GREEN1

AMBER1

AGND

LQFP - 64

AVDD

1

2

3

4

5

6

7

8

9

10 11 12 13 14 15 16

Figure 3.1 - Pinout Diagram

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GL850 USB 2.0 4-Port HUB Controller

3.2 Pin List

Table 3.1 - Pin List

Pin# Pin Name Type Pin# Pin Name Type Pin# Pin Name Type Pin# Pin Name Type

1

2

3

4

AGND

DMF0

DMH0

DPH0

P

B

17 RREF

18 AVDD

19 AGND

20 XTAL1

B

P

I

33 DP4

B

O

P

49 AMBER2

50 PSELF

51 DGND

52 DVDD

O

I

34 GREEN4

35 AMBER4

36 DGND

P

PGANG/

DVDD

P

5

DPF0

B

21 XTAL2

O

37

53

B

SUSPND

6

7

8

9

RPU

B

P

22 AVDD

23 AGND

24 DM3

P

B

P

B

P

B

38 RESET#

39 TEST

I

54 OVCUR2#

55 PWREN2#

56 OVCUR1#

57 PWREN1#

58 DGND

I

DM1

O

I

DMH1

DPH1

40 OVCUR4#

41 PWREN4#

42 OVCUR3#

43 PWREN3#

44 GREEN3

45 AMBER3

46 DGND

I

25 DMH3

26 DPH3

27 DP3

O

I

O

P

O

P

10 DP1

11 AVDD

12 AGND

13 DM2

14 DMH2

15 DPH2

16 DP2

O

B

O

P

O

59 DVDD

P

28 AVDD

29 AGND

30 DM4

60 GREEN1

61 AMBER1

62 AGND

B

31 DMH4

32 DPH4

47 DVDD

63 AVDD

48 GREEN2

64 AVDD

Page 12

GL850 USB 2.0 4-Port HUB Controller

3.3 Pin Descriptions

Table 3.2 - Pin Descriptions

USB Interface

Pin#

Pin Name

Type

B

Description

DMF0,DMH0,

DPH0,DPF0

DM1,DMH1,

DPH1,DP

2,3,4,5

USB signals for USPORT

USB signals for DSPORT1

USB signals for DSPORT2

USB signals for DSPORT3

USB signals for DSPORT2

7,8,9,10

B

13,14, DM2,DMH2,

15,16 DPH2,DP2

24,25, DM3,DMH3,

26,27 DPH3,DP3

30,31, DM4,DMH4,

32,33 DPH4,DP4

B

RPU connects 1.5KΩ resister to 3.3V. RPU can be set to

disconnected by externally resetting RESET#

A 510Ω resister must be connected between RREF and analog

ground (AGND).

6

RPU

B

17

RREF

Note: USB signals must be carefully handled in PCB routing. For detailed information, please refer to

GL850 Design Guideline.

HUB Interface

Pin#

Pin Name

Type

Description

Active low. Over current indicator for DSPORT1~

56,54, OVCUR1#~

42,40 OVCUR4#

I

DSPORT4

(pu) For GANG mode, OVCUR1# is the only over current flag for

GL850

Active low. Power enable output for DSPORT1~

57,55, PWREN1#~

43,41 PWREN4#

O

DSPORT4

(pu) For GANG mode, PWREN1# is the only power enable output for

GL850.

60,48, GREEN1~

44,34 GREEN4

O

Green LED indicator for DSPORT1~DSPORT4

(pd)

Amber LED indicator for DSPORT4~DSPORT1

61,49, AMBER1~

45,35 AMBER4

O

*AMBER[4~1] are also used to access the external

(pd) EEPROM. For detailed information, please refer to

Chapter 5.

0: GL850 is bus-powered.

50

PSELF

I

1: GL850 is self-powered.

This pin is default put in input mode after power-on reset.

Individual/gang mode is strapped during this period. After the

strapping period, this pin will be set to output mode, and then

PGANG/

SUSPND

B

output high for normal mode. When GL850 is suspended, this pin

53

(pd) will output low.

*For detailed explanation, please see Chapter 5

Input: 0: individual, 1: gang

Output: 0: suspend, 1: normal

Page 13

GL850 USB 2.0 4-Port HUB Controller

Clock and Reset Interface

Description

12MHz crystal clock input.

Pin#

20

Pin Name

XTAL1

Type

I

12MHz crystal clock output.

21

XTAL2

O

Active low. External reset input, default pull high 100KΩ.

When RESET# = low, whole chip is reset to the initial state.

38

RESET#

I

System Interface

Description

Pin#

Pin Name

TEST

Type

I

0: Normal operation.

39

(pd)

1: Chip will be put in test mode.

Power / Ground

Description

Pin#

Pin Name

Type

11,18,

22,28, AVDD

63,64

P

Analog power input for analog circuits.

Analog ground input for analog circuits.

1,12,19,

23,29, AGND

62

P

37,47,

DVDD

52,59

P

Digital power input for digital circuits.

Digital ground input for digital circuits.

36,46,

DGND

51,58

Note: Analog circuits are quite sensitive to power and ground noise. PCB layout must

take care the power routing and the ground plane. For detailed information, please refer to

GL850 Design Guideline.

Notation:

Type

O

Output

I

B

Input

Bi-directional

B/I

B/O

P

Bi-directional, default input

Bi-directional, default output

Power / Ground

A

Analog

SO

pu

pd

odpu

Automatic output low when suspend

Internal pull up

Internal pull down

Open drain with internal pull up

Page 14

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 4 BLOCK DIAGRAM

12MHz

D+

D-

USPORT

PLL

RAM ROM

CPU

GPIO

FRTIMER

Transceiver

UTMI

x40, x10

Control/Status

Register

USPORT

Logic

SIE

REPEATER

TT (Transaction Translator)

REPEATER / TT Routing Logic

DSPORT1 Logic

DSPORT2 Logic

DSPORT3 Logic

DSPORT4 Logic

DSPORT

Transceiver

DSPORT

Transceiver

DSPORT

Transceiver

DSPORT

Transceiver

LED/

D+ D-

OVCUR/

PWRENB

OVCUR/

PWRENB

OVCUR/

PWRENB

Figure 4.1 - Block Diagram

Page 15

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 5 FUNCTION DESCRIPTION

5.1 General

5.1.1 USPORT Transceiver

USPORT (upstream port) transceiver is the analog circuit that supports both full-speed and high-speed

electrical characteristics defined in chapter 7 of USB specification Revision 2.0. USPORT transceiver will

operate in full-speed electrical signaling when GL850 is plugged into a 1.1 host/hub. USPORT transceiver

will operate in high-speed electrical signaling when GL850 is plugged into a 2.0 host/hub.

5.1.2 PLL (Phase Lock Loop)

Gl850 contains a 40x PLL and a 10x PLL. PLL generates the clock sources for the whole chip. The

generated clocks are proven quite accurate that help in generating high speed signal without jitter.

5.1.3 FRTIMER

This module implements hub (micro)frame timer. The (micro)frame timer is derived from the hub’s local

clock and is synchronized to the host (micro)frame period by the host generated Start of (micro)frame

(SOF). FRTIMER keeps tracking the host’s SOF such that GL850 is always safely synchronized to the host.

The functionality of FRTIMER is described in section 11.2 of USB Specification Revision 2.0.

5.1.4 μC

μC is the micro-processor unit of GL850. It is an 8-bit RISC processor with 2K ROM and 64 bytes RAM.

It operates at 6MIPS of 12Mhz clock to decode the USB command issued from host and then prepares the

data to respond to the host. In addition, μC can handle GPIO (general purpose I/O) settings and reading

content of EEPROM to support high flexibility for customers of different configurations of hub. These

configurations include self/bus power mode setting, individual/gang mode setting, downstream port number

setting, device removable/non-removable setting, and PID/VID setting.

5.1.5 UTM (USB2.0 Transceiver Macrocell Interface)

UTMI handles the low level USB protocol and signaling. It’s designed based on the Intel’s UTMI

specification 1.01. The major functions of UTMI logic are to handle the data and clock recovery, NRZI

encoding/decoding, Bit stuffing /de-stuffing, supporting USB2.0 test modes, and serial/parallel conversion.

5.1.6 USPORT logic

USPORT implements the upstream port logic defined in section 11.6 of USB specification Revision 2.0. It

mainly manipulates traffics in the upstream direction. The main functions include the state machines of

Receiver and Transmitter, interfaces between UTMI and SIE, and traffic control to/from the REPEATER

and TT.

5.1.7 SIE (Serial Interface Engine)

SIE handles the USB protocol defined in chapter 8 of USB specification Revision 2.0. It co-works with μC

to play the role of the hub kernel. The main functions of SIE include the state machine of USB protocol

flow, CRC check, PID error check, and timeout check. Unlike USB1.1, bit stuffing/de-stuffing is

implemented in UTMI, not in SIE.

5.1.8 Control/Status register

Control/Status register is the interface register between hardware and firmware. This register contains the

information necessary to control endpoint0 and endpoint1 pipelines. Through the firmware based

architecture, GL850 possesses higher flexibility to control the USB protocol easily and correctly.

Page 16

GL850 USB 2.0 4-Port HUB Controller

5.1.9 REPEATER

Repeater logic implements the control logic defined in section 11.4 and section 11.7 of USB specification

Revision 2.0. REPEATER controls the traffic flow when upstream port and downstream port are signaling

in the same speed. In addition, REPEATER will generate internal resume signal whenever a wakeup event

is issued under the situation that hub is globally suspended.

5.1.10 TT (Transaction Translator)

TT implements the control logic defined in section 11.14 ~ 11.22 of USB specification Revision 2.0. TT

basically handles the unbalanced traffic speed between the USPORT (operating in HS) and DSPORTS

(operating in FS/LS) of hub. GL850 adopts the single TT architecture to provide the most cost effective

solution. Single TT shares the same buffer control module for each downstream port.

5.1.11 REPEATER/TT routing logic

REPEATER and TT are the major traffic control machines in the USB2.0 hub. Under situation that

USPORT and DSPORT are signaling in the same speed, REPEATER/TT routing logic switches the traffic

channel to the REPEATER. Under situation that USPORT is in the high speed signaling and DSPORT is in

the full/low speed signaling, REPEATER/TT routing logic switches the traffic channel to the TT.

5.1.11.1 Connected to 1.1 Host/Hub

If an USB2.0 hub is connected to the downstream port of an USB1.1 host/hub, it will operate in USB1.1

mode. For an USB1.1 hub, both upstream direction traffic and downstream direction traffic are passing

through REPEATER. That is, the REPEATER/TT routing logic will route the traffic channel to the

REPEATER.

USB1.1 HOST/HUB

USPORToperating

in FS signaling

Traffic channel

is routed to

REPEATER

TT

REPEATER

DSPORT operating

in FS/LS signaling

Figure 5.1 - Operating in USB1.1 scheme

Page 17

GL850 USB 2.0 4-Port HUB Controller

5.1.11.2 Connected to USB2.0 Host/Hub

If an USB2.0 hub is connected to an USB2.0 host/hub, it will operate in USB2.0 mode. The upstream port

signaling is in high speed with bandwidth of 480 Mbps under this environment. The traffic channel will

then be routed to the REPEATER when the device connected to the downstream port is signaling also in

high speed. On the other hand, the traffic channel will then be routed to TT when the device connected to

the downstream port is signaling in full/low speed.

USB2.0 HOST/HUB

USPORToperating

in HS signaling

HS vs. HS:

Traffic channel is

HS vs. FS/LS:

Traffic channel

is routed to TT

REPEATER

TT

routed to REPEATER

DSPORT operating

in FS/LS signaling

DSPORT operating

in HS signaling

Figure 5.2 - Operating in USB2.0 scheme

5.1.12 DSPORT logic

DSPORT (downstream port) logic implements the control logic defined in section 11.5 of USB specification

Revision 2.0. It mainly manipulates the state machine, the connection/disconnection detection, over current

detection and power enable control, and the status LED control of the downstream port. Besides, it also

output the control signals to the DSPORT transceiver.

5.1.13 DSPORT Transceiver

DSPORT transceiver is the analog circuit that supports high-speed, full-speed, and low-speed electrical

characteristics defined in chapter 7 of USB specification Revision 2.0. In addition, each DSPORT

transceiver accurately controls its own squelch level to detect the detachment and attachment of devices.

Page 18

GL850 USB 2.0 4-Port HUB Controller

5.2 Configuration and I/O Settings

5.2.1 RESET# Setting

When RESET# is low enabled, the whole chip is put in initial state. In addition, RPU will disable the

pull-up 1.5KΩ resister to 3.3V, which causes GL850 seems to be disconnected to the host. We suggest

configure RESET# as following figure. Vbus is the 5V input from USB cable. GL850 will always be in

disconnected state when USB cable is not plugged into host, even that GL850 is powered.

RESETI

RESET#

C

Vbus(5V)

AVDD(3.3V)

R

1.5K ohm

RPU

DPF0

On PCB

Inside GL850

Figure 5.3 - RESET# (External Reset) setting and application

GL850 internally contains a power on reset circuit. The power on sequence is depicted in the next picture.

To fully control the reset process of GL850, we suggest the reset time applied in the external reset circuit

should more than that of the internal reset circuit.

Page 19

GL850 USB 2.0 4-Port HUB Controller

VCC(3.3V)

Power good voltage, 2.5~2.8V

≒ 2.7 μs

Internal reset

External reset

Figure 5.4 - Power on sequence of GL850

5.2.2 PGANG/SUSPND Setting

To save pin count, GL850 uses the same pin to decide individual/gang mode as well as to output the

suspend flag. The individual/gang mode is decided in the period of 1ms after power on reset. After that

period of time, this pin is changed to output mode. GL850 outputs the suspend flag once it is globally

suspended. For individual mode, a pull low resister greater than 100KΩ should be placed. For gang mode,

a pull high resister greater than 100KΩ should be placed. In figure 5.6, we also depict the suspend LED

indicator schematics. It should be noticed that the polarity of LED must be followed, otherwise the suspend

current will be over than the current limitation (2.5mA).

RESET#

1 ms

GANG_CTL

Output mode, indicating

GL850 is in normal

mode or suspend mode

Input mode, strapping

to decide individual or

gang mode

Figure 5.5 - Timing of PGANG/SUSPND strapping

Page 20

GL850 USB 2.0 4-Port HUB Controller

GAND Mode

DVDD(3.3V)

Suspend LED

Indicator

100K ohm

"0": Individual Mode

"1": GANG Mode

SUSPNDO

GANG_CTL

Inside GL850

100K ohm

Suspend LED

Indicator

On PCB

Individual

Mode

Figure 5.6 - GANG Mode Setting

5.2.3 SELF/BUS Power Setting

GL850 can operate under bus power and conform to the power consumption limitation completely (suspend

current < 2.5 mA, normal operation current < 100 mA). By setting PSELF, GL850 can be configured as a

bus-power or a self-power hub.

1: Power Self

0: Power Bus

PSELF

Inside GL850

On PCB

Figure 5.7 - SELF/BUS Power Setting

Page 21

GL850 USB 2.0 4-Port HUB Controller

5.2.4 LED Connections

GL850 controls the LED lighting according to the flow defined in section 11.5.3 of Universal Serial Bus

Specification Revision2.0. Both manual mode and Automatic mode are supported in GL850. When GL850

is globally suspended, GL850 will turn off the LED to save power.

AMBER/GREEN

LED

DGND

Inside GL850

On PCB

Figure 5.8 - LED Connection

5.2.5 EEPROM Setting

GL850 replies to host commands by the default settings in the internal ROM. GL850 also offers the ability

to reply to the host according to the settings in the external EEPROM(93C46). The following table shows

the configuration of 93C46.

Table 5.1 - 93C46 Configuration

00h

01h

02h

03h

04h

05h

06h

07h

DEVICE

00 VID_H VID_L PID_H PID_L CHKSUM FF PORT_NO

VENDOR

FF FF FF FF FF FF FF FF

REMOVABLE

XX

08

XX

XX XX XX XX XX XX XX XX

LENGTH

XX

10

18

XX

XX XX XX XX XX XX XX XX

XX

PRODUCT

LENGTH

XX

20

XX

XX XX XX XX XX XX XX XX

28

30

XX

XX XX XX XX XX XX XX XX

XX

SERIAL

38 NUMBER XX

LENGTH

XX

XX XX XX XX XX XX XX XX

40

48

XX

XX XX XX XX XX XX XX XX

Note: 1. VID_H/VID_L: high/low byte of VID value

2. PID_H/PID_L: high/low byte of PID value

3. CHKSUM: CHKSUM must equal to VID_H + VID_L + PID_H + PID_L + 1,otherwise

firmware will ignore the EEPROM settings.

Page 22

GL850 USB 2.0 4-Port HUB Controller

4. PORT_NO: port number, value must be 1~4.

5. DEVICE REMOVALBE:

PORT4

PORT3

PORT2

PORT1

-

REMOVABLE REMOVABLE REMOVABLE REMOVABLE

0: Device attached to this port is removable.

1: Device attached to this port is non-removable.

6. VENDOR LENGTH: offset 08h contains the length of the vendor string. Values of vendor string is

contained from 09h~1fh.

7. PRODUCT LENGTH: offset 20h contains the length of product string. Values of product string is

contained from 21h~37h.

8. SERIAL NUMBER LENGTH: offset 38h contains the value of serial number string. Values of serial

number string is contained after offset 39h.

The schematics between GL850 and 93C46 is depicted in the following figures:

DVDD

AMBER1

GREEN1

AMBER2

PGANG

CS

SK

DI

VCC

NC

DO

GND

93C46

Figure 5.9 - Schematics Between GL850 and 93C46

GL850 firstly verifies the check sum after power on reset. If the check sum is correct, GL850 will take the

configuration of 93C46 as part of the descriptor contents. To prevent the content of 93C46 from being

over-written, amber LED will be disabled when 93C46 exists.

5.3 USB Protocols

To behave as a standard USB2.0 hub, some protocols defined in Chapter 9 and Chapter 11 of Universal

Serial Bus Specification Revision 2.0 must be followed. We firstly classify these standard requests and hub

class requests in section 6.1. Descriptors are described in section 6.2, which contain the detailed

information for the hub.

Page 23

GL850 USB 2.0 4-Port HUB Controller

5.3.1 Host Commands and Hub Answers

An USB hub needs at least 2 endpoints to guarantee the normal operation. Endpoint 0 is the default control

pipe. Endpoint 1 is the interrupt pipe.

Host gets all the information about the hub and through the control pipe. Hub information like self/bus

power and gang/individual mode is all replied to host via endpoint0. Interrupt pipe is to report to the host

the updated change of hub status (power change and over current change, for example) and the updated

status change of all downstream ports (connect change, suspend change, over current change, etc.).

5.3.1.1 Standard Requests

Table 5.2 - Standard Request List

Request

bmRequestType bRequest wValue wIndex wLength

Return

GET_DESCRIPTOR

Device Descriptor

10000000b

06h

0100h 0000h

0600h 0000h

0012h

000Ah

(Device)

(Note1)

GET_DESCRIPTOR

(Device_Qualifier)

Device_Qualifier

Descriptor (Note1)

Configuration+Interface+

GET_DESCRIPTOR

(Configuration)

10000000b

06h

0200h 0000h

0700h 0000h

0019h Endpoint Descriptors

(Note1)

Other_Speed_

GET_DESCRIPTOR

(Other_Speed_Configur

ation)

Configuration+Interface+

0019h

Endpoint Descriptors

(Note1)

GET_DESCRIPTOR

(String Index0)

String Descriptor Index0

10000000h

00000000b

06h

05h

09h

0300h 0000h

0301h 0409h

0302h 0409h

0004h

(Note1)

GET_DESCRIPTOR

(String Index1)

String Descriptor Index1

0020h

(Note1)

GET_DESCRIPTOR

(String Index2)

String Descriptor Index2

002Ch

(Note1)

0000h ~

0000h

SET_ADDRESS

0000h Zero length packet

007Fh

SET_CONFIGURATIO

0000h/

0000h

0001h

N

GET_CONFIGURATI

0000h

00000000b

00000001b

08h

0000h

0001h Configuration value

0000h Zero length packet

ON

SET_INTERFACE

0Bh

0000h 0000h

0001h 0000h

SET_FEATURE

(Remote wakeup

ability)

SET_FEATURE

(Endpoint0 halt)

no support

00000000b

03h

0000h Zero length packet

0000h/

0000h

00000010b

00000000b

03h

01h

0000h Zero length packet

0080h

SET_FEATURE

(Endpoint1 halt)

CLEAR_FEATURE

(Remote wakeup

ability)

CLEAR_FEATURE

(Endpoint0 halt)

no support

0000h 0081h

0001h 0000h

0000h/

0000h

00000010b

01h

0000h Zero length packet

0080h

Page 24

GL850 USB 2.0 4-Port HUB Controller

CLEAR_FEATURE

(Endpoint1 halt)

00000010b

01h

0000h 0081h

0000h Zero length packet

GET_INTERFACE

10000001b

10000000b

0Ah

00h

0000h 0000h

0001h 00h

GET_STATUS

0002h Device status

(Device)

GET_STATUS

(Interface)

10000001b

10000010b

00h

0000h 0000h

0002h 0000h

GET_STATUS

(Endpoint0)

no support

0000h/

0000h

0002h Endpoint0 status

0080h

GET_STATUS

10000010b

00h

0000h 0081h

0002h Endpoint1 status

(Endpoint1)

SET_FEATURE

(Test_J)

00000000b

03h

0002h 0100h

0002h 0200h

0002h 0300h

0002h 0400h

0002h 0500h

0000h Zero length packet

SET_FEATURE

(Test_K)

SET_FEATURE

(Test_SE0_NAK)

SET_FEATURE

(Test_Packet)

SET_FEATURE

(Test_Force_Enable)

Note: 1. The detailed information for these descriptors is described in Section 6.2.

5.3.1.2 Hub Class Requests

Table 5.3 - Hub Class Requests List

Request

bmRequestType bRequest wValue wIndex wLength

Return

GetHubDesciptor

10100000b

06h

2900h 0000h

0009h Hub Descriptor (Note1)

Hub status and change

GetHubStatus

10100000b

00h

0000h 0000h

0004h

status

0001h~

0000h

Port status and port

0004h

GetPortStatus

10100011b

00100011b

00h

03h

0004h

change status

SetPortFeature

0001h~

0004h

0000h Zero length packet

(PORT_RESET)

SetPortFeature

0004h

0001h~

0002h

(PORT_SUSPEND)

SetPortFeature

0004h

0001h~

0008h

(PORT_POWER)

ClearHubFeature

(C_HUB_OVER_CUR

RENT)

0004h

00100000b

01h

0001h 0000h

0000h Zero length packet

ClearPortFeature

(PORT_ENABLE)

ClearPortFeature

(PORT_SUSPEND)

ClearPortFeature

(PORT_POWER)

0001h~

0001h

00100011b

01h

0000h Zero length packet

0004H

0001h~

0002h

0004H

0001h~

0008h

0004H

ClearPortFeature

00100011b

01h

0016h (Note2) 0000h Zero length packet

Page 25

(PORT_INDICATOR)

GL850 USB 2.0 4-Port HUB Controller

ClearPortFeature

(C_PORT_CONNECTI

ON)

0001h~

00100011b

01h

0010h

0000h Zero length packet

0004h

ClearPortFeature

(C_PORT_RESET)

ClearPortFeature

(C_PORT_ENABLE)

ClearPortFeature

(C_PORT_SUSPEND)

ClearPortFeature

(C_PORT_OVER_CU

RRENT)

0001h~

0004h

00100011b

01h

0014h

0011h

0012h

0000h Zero length packet

0001h~

0004h

0001h~

0004h

0001h~

0004h

00100011b

01h

03h

0013h

0015h

0000h Zero length packet

SetPortFeature

0101h~

0104h

(PORT_TEST:TEST_J)

SetPortFeature

0201h~

0204h

(PORT_TEST:TEST_K

)

SetPortFeature

0301h~

0304h

(PORT_TEST:

00100011b

03h

0015h

0000h Zero length packet

TEST_SE0_NAK)

SetPortFeature

0401h~

0404h

(PORT_TEST:

TEST_PACKET)

SetPortFeature

(PORT_TEST:

0501h~

0504h

00100011b

03h

0015h

0000h Zero length packet

TEST_FORCE_ENAB

LE)

SetPortFeature

0016h (Note2) 0000h Zero length packet

(Note3) 0001h 0000h Zero length packet

0000h 0001h 08D0h? TT state

(PORT_INDICATOR)

ClearTTBuffer

GetTTStatus

ResetTT

00100011b

10100011B

00100011b

00100011B

08h

0Ah

09h

0Bh

0000h 0001h

0000h Zero length packet

StopTT

Note: 1. Hub descriptor is described in Section 6.2.

2. High byte of wIndex is the port indicators selector code, low byte of wIndex is the port number. For

detailed information, please refer to the section 11.24.2.13 of Universal Serial Bus Specification

Revision 2.0.

3. The device address, endpoint number, and endpoint type of the full-/low-speed endpoint that may

have a busy TT buffer must be specified in the wValue field. For detailed information, please refer to

the table 11-18 of section 11.24.2.3 of Universal Serial Bus Specification Revision 2.0.

Page 26

GL850 USB 2.0 4-Port HUB Controller

5.4 Descriptors

Descriptors contain all the information about the USB2.0 hub. Host asks different types of descriptors by

different GET_DESCRIPTOR commands. Hub will reply to different GET_DESCRIPTOR the associated

descriptors to let host know how to configure the hub. For an USB2.0 hub, the descriptors are:

ꢀ

Device Descriptor

Device Qualifier Descriptor

Configuration Descriptor

Interface Descriptor

Endpoint Descriptor

Other Speed Configuration Descriptor

Hub Class-specific Descriptor

String Descriptor

Descriptors replied are different between full speed and high speed for an USB2.0 hub. Once an USB2.0

hub is plugged into a host/hub, it needs to firstly decide the host/hub is an USB1.1 host/hub or an

USB2.0 host/hub. If the host/hub being plugged is an USB1.1 hub, GL850 replies to the host the full

speed descriptors defined in section 6.2.1. Otherwise, GL850 replies the high speed descriptors defined

in section 6.2.2. For hub class-specific descriptor, there’s no difference between full speed and high speed.

5.4.1 Full Speed Case

5.4.1.1 Device Descriptor

Hub returns Device Descriptor when GET_DESCRIPTOR (DEVICE) command is requested.

Table 5.4 - Device Descriptor for Full Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

2

4

5

6

bLength

12h 18 bytes for this descriptor

01h Device descriptor type

0200h USB2.0 compliance

09h Hub class code

-

bDescriptorType

bcdUSB

bDeviceClass

bDeviceSubClass

bDeviceProtocol

00h Subclass code

00h Protocol code

Max. packet size of

7

8

bMaxPacktSize0

idVendor

40h

-

endpoint0

Vendor ID of Genesys

05E3h

Y

Logic Inc.

Product ID of Genesys

10 idProduct

0660h

Logic Inc.

12 bcdDevice

14 iManufacturer

15 idProduct

16 iSerialNumber

17 bNumConfigurations

xxxxh Version Control

-

Y

-

00h Index of vendor string

01h Index of product string

00h Index of serial number

01h Number of configuration

Page 27

GL850 USB 2.0 4-Port HUB Controller

5.4.1.2 Device Qualifier Descriptor

Hub returns Device Qualifier Descriptor when GET_DESCRIPTOR (DEVICE_QUALIFIER) command is

issued from host.

Table 5.5 - Device Qualifier for Full Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

bLength

0Ah 10 bytes for this descriptor

-

Device qualifier descriptor

bDescriptorType

06h

type

2

4

5

6

bcdUSB

0200h USB2.0 compliance

09h Hub class code

00h Subclass code

01h Single TT

-

bDeviceClass

bDeviceSubClass

bDeviceProtocol

Max. packet size for

7

bMaxPacketSize0

40h

-

endpoint0 of other speed

Number of other speed

8

9

bNumConfigurations

bReserved

01h

-

config.

00h Reserved for future use

5.4.1.3 Configuration Descriptor

When host issues GET_DESCRIPTOR (CONFIGURATION) command to the hub, hub will return

Configuration Descriptor, Interface Descriptor, and Endpoint Descriptor in combination to the host.

Table 5.6 - Configuration Descriptor for Full Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

bLength

09h 9 bytes for this descriptor

-

Configuration descriptor

bDescriptorType

02h

type

2

4

5

6

wTotalLength

0019h Total 25 bytes

-

bNumberInterface

bConfigurationValue

iConfiguration

01h Number of interfaces

01h Configuration value

00h Index of string descriptor

Can switch between self

7

8

bmAttribute

bMaxPower

E0h

-

power and bus power

32h Max. power = 100 mA

Page 28

GL850 USB 2.0 4-Port HUB Controller

5.4.1.4 Interface Descriptor

Interface Descriptor follows Configuration Descriptor for GET_DESCRIPTOR (CONFIGURATION)

command.

Table 5.7 - Interface Descriptor for Full Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

2

3

4

5

6

7

8

bLength

9 bytes for this descriptor

Interface descriptor type

Interface number

-

09h

04h

00h

01h

09h

00h

bDescriptorType

bIerfaceNumber

bAlternateSetting

bNumEndpoints

bInterfaceClass

bInterfaceSubClass

bInterfaceProtocol

iInterface

Alternate setting

Number of endpoints

Hub class code

Subclass code

Protocol code

Index of string descriptor

5.4.1.5 Endpoint Descriptor

Endpoint Descriptor follows Interface Descriptor for GET_DESCRIPTOR (CONFIGURATION) command.

Table 5.8 - Endpoint Descriptor for Full Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

2

3

bLength

07h 7bytes for this descriptor

05h Endpoint descriptor type

81h Address of the endpoint

03h Interrupt endpoint

-

bDescriptorType

bEpointAddress

bAttribute

Max. packet size of the

4

6

wMaxPacketSize

bInterval

0001h

-

endpoint

ffh Polling interval (ms)

Page 29

GL850 USB 2.0 4-Port HUB Controller

5.4.1.6 Other Speed Configuration Descriptor

An USB2.0 hub returns Other Speed Configuration Descriptor for the command GET_DESCRIPTOR

(OTHER_SPEED_CONFIGURATION). An USB2.0 host will issue this command when the hub plugged is

an USB2.0 hub.

Table 5.9 - Other Speed Configuration Descriptor for Full Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

bLength

09h 9 bytes for this descriptor

-

Other speed descriptor

bDescriptorType

07h

type

2

4

5

6

wTotalLength

19h Total 25 bytes

-

bNumberInterface

bConfigurationValue

iConfiguration

01h Number of interfaces

01h Configuration value

00h Index of string descriptor

Can switch between self

7

8

bmAttribute

bMaxPower

E0h

-

power and bus power

32h Max. power = 100 mA

5.4.1.7 Interface Descriptor combined with Other Speed Configuration Descriptor

Other Speed Interface Descriptor is in combination after Other Speed Configuration Descriptor for the

command GET_DESCRIPTOR (OTHER_SPEED_CONFIGURATION).

Table 5.10 - Other Speed Interface Descriptor for Full Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

2

3

4

5

6

7

8

bLength

09h 9 bytes for this descriptor

04h Interface descriptor type

00h Interface number

00h Alternate setting

01h Number of endpoints

09h Hub class code

-

bDescriptorType

bIerfaceNumber

bAlternateSetting

bNumEndpoints

bInterfaceClass

bInterfaceSubClass

bInterfaceProtocol

iInterface

00h Subclass code

00h Single TT

00h Index of string descriptor

Page 30

GL850 USB 2.0 4-Port HUB Controller

5.4.1.8 Endpoint Descriptor combined with Other Speed Configuration Descriptor

Other Speed Endpoint Descriptor is in combination after Other Speed Interface Descriptor for the command

GET_DESCRIPTOR (OTHER_SPEED_CONFIGURATION).

Table 5.11 - Other Speed Endpoint Descriptor for Full Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

2

3

bLength

07h 7bytes for this descriptor

05h Endpoint descriptor type

81h Address of the endpoint

03h Interrupt endpoint

-

bDescriptorType

bEpointAddress

bAttribute

Max. packet size of the

4

6

wMaxPacketSize

bInterval

0001h

-

endpoint

Polling interval =

0Ch

(2¹²-1) X 125 us

5.4.1.9 String Descriptor

String Descriptor is replied for the command GET_DESCRIPTOR (STRING). Generally, one string

contains the information for manufacturer and the other contains the information for the product. These

strings can be configured in EERPOM. GL850 will read the data in the EEPROM to respond to the host.

The information in the following table are the default settings of Genesys Logic Inc.

Table 5.12 - String Index0 for Full Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

2

bLength

04h 4 bytes for this descriptor

03h String descriptor type

0409 Language : English

-

bDescriptorType

wLangid

Table 5.13 - String Index1 for Full Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

bLength

16h 16 bytes for this descriptor

03h String descriptor type

Unicode encoded manufacture

string-USB2.0 Hub as default

setting

-

Y

bDescriptorType

2

bString

-

Y

Page 31

GL850 USB 2.0 4-Port HUB Controller

Table 5.14 - String Index2 for Full Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

bLength

xxh

03h

-

Y

x bytes for this descriptor

String descriptor type

bDescriptorType

bString

-

Unicode encoded product string –

2

Y

No default setting

5.4.2 High Speed Case

5.4.2.1 Device Descriptor

High Speed Device Descriptor is replied when hub is operated in high speed mode. The content of high speed Device

Descriptor is almost the same as Full Speed Device Descriptor, except the bDeviceProtocol value is 01h, which means

GL850 is a single TT hub.

Table 5.15 - Device Descriptor for High Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

2

4

5

6

bLength

12h 18 bytes for this descriptor

01h Device descriptor type

0200h USB2.0 compliance

09h Hub class code

-

bDescriptorType

bcdUSB

bDeviceClass

bDeviceSubClass

bDeviceProtocol

00h Subclass code

01h Single TT

Max. packet size of

7

8

bMaxPacktSize0

idVendor

40h

-

endpoint0

Vendor ID of Genesys

05E3h

Y

Logic Inc.

Product ID of Genesys

10 idProduct

0660h

Logic Inc.

12 bcdDevice

xxxxh Version Control

Y

-

14 iManufacturer

15 idProduct

00h Index of vendor string

01h Index of product string

00h Index of serial number

01h Number of configuration

-

16 iSerialNumber

17 bNumConfigurations

Page 32

GL850 USB 2.0 4-Port HUB Controller

5.4.2.2 Device Qualifier Descriptor

High Sped Device Qualifier Descriptor contains almost the same information as the Full Speed Device

Qualifier Descriptor, except that bDeviceProtocol value is 00h.

Table 5.16 - Device Qualifier for High Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

bLength

0Ah 10 bytes for this descriptor

-

Device qualifier descriptor

bDescriptorType

06h

type

2

4

5

6

bcdUSB

0200h USB2.0 compliance

09h Hub class code

00h Subclass code

00h Protocol code

-

bDeviceClass

bDeviceSubClass

bDeviceProtocol

Max.

packet

size

for

7

bMaxPacketSize0

40h

01h

-

endpoint0 of other speed

Number of other speed

8

9

bNumConfigurations

bReserved

-

config.

00h Reserved for future use

5.4.2.3 Configuration Descriptor

Information contained in High Speed Configuration Descriptor is the same as Full Speed Configuration

Descriptor.

Table 5.17 - Configuration Descriptor for High Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

bLength

09h 9 bytes for this descriptor

-

Configuration descriptor

bDescriptorType

02h

type

2

4

5

6

wTotalLength

0019h Total 25 bytes

-

bNumberInterface

bConfigurationValue

iConfiguration

01h Number of interfaces

01h Configuration value

00h Index of string descriptor

Can switch between self

7

8

bmAttribute

bMaxPower

E0h

-

power and bus power

32h Max. power = 100 mA

Page 33

GL850 USB 2.0 4-Port HUB Controller

5.4.2.4 Interface Descriptor

Interface Descriptor follows Configuration Descriptor for GET_DESCRIPTOR (CONFIGURATION)

command.

Table 5.18 - Interface Descriptor for High Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuratio Configuratio

n

0

1

2

3

4

5

6

7

8

bLength

09h 9 bytes for this descriptor

04h Interface descriptor type

00h Interface number

00h Alternate setting

01h Number of endpoints

09h Hub class code

-

bDescriptorType

bIerfaceNumber

bAlternateSetting

bNumEndpoints

bInterfaceClass

bInterfaceSubClass

bInterfaceProtocol

iInterface

-

00h Subclass code

00h Single TT

00h Index of string descriptor

5.4.2.5 Endpoint Descriptor in Configuration Descriptor

bInterval of High Speed Interface Descriptor is 0Ch, which is different from that of Full Speed Endpoint

Descriptor.

Table 5.19 - Endpoint Descriptor for High Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

2

3

bLength

07h 7bytes for this descriptor

05h Endpoint descriptor type

81h Address of the endpoint

03h Interrupt endpoint

-

bDescriptorType

bEpointAddress

bAttribute

Max. packet size of the

4

6

wMaxPacketSize

bInterval

01h

-

endpoint

Polling interval =

0Ch

(2¹²-1) X 125 us

Page 34

GL850 USB 2.0 4-Port HUB Controller

5.4.2.6 Other Speed Configuration Descriptor

Values in all the field of High Speed Other Speed Configuration Descriptor are the same as those of Full

Speed Other Speed Configuration Descriptor.

Table 5.20 - Other Speed Configuration Descriptor for Hihg Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

bLength

09h 9 bytes for this descriptor

-

Other speed descriptor

bDescriptorType

07h

type

2

4

5

6

wTotalLength

19h Total 25 bytes

-

bNumberInterface

bConfigurationValue

iConfiguration

01h Number of interfaces

01h Configuration value

00h Index of string descriptor

Can switch between self

7

8

bmAttribute

bMaxPower

E0h

-

power and bus power

32h Max. power = 100 mA

5.4.2.7 Interface Descriptor in Other Speed Configuration Descriptor

All the values in this descriptor are the same as those in Other Speed Interface Descriptor for full speed.

Table 5.21 - Other Speed Interface Descriptor for High Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

2

3

4

5

6

7

8

bLength

09h 9 bytes for this descriptor

04h Interface descriptor type

00h Interface number

00h Alternate setting

-

bDescriptorType

bIerfaceNumber

bAlternateSetting

bNumEndpoints

bInterfaceClass

bInterfaceSubClass

bInterfaceProtocol

iInterface

01h Number of endpoints

09h Hub class code

00h Subclass code

00h Protocol code

00h Index of string descriptor

Page 35

GL850 USB 2.0 4-Port HUB Controller

5.4.2.8 Endpoint Descriptor in Other Speed Configuration Descriptor

Table 5.22 - Other Speed Endpoint Descriptor for High Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

2

4

bLength

07h 7bytes for this descriptor

05h Endpoint descriptor type

81h Address of the endpoint

03h Interrupt endpoint

-

bDescriptorType

bEpointAddress

bAttribute

Max. packet size of the

5

6

wMaxPacketSize

bInterval

01h

-

endpoint

FFh Polling interval (ms)

5.4.2.9 String Descriptor

All the values of all the String Descriptors for high speed are the same as those for full speed.

Table 5.23 - String Index0 for High Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

2

bLength

04h 4 bytes for this descriptor

03h String descriptor type

0409 Language : English

-

bDescriptorType

wLangid

Table 5.24 - String Index1 for High Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

bLength

16h 16 bytes for this descriptor

03h String descriptor type

-

Y

bDescriptorType

-

Y

Unicode encoded manufacture

string - USB2.0 Hub as default

setting

2

bString

-

Y

Table 5.25 - String Index2 for High Speed

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

bLength

XXh x bytes for this descriptor

03h String descriptor type

-

Y

bDescriptorType

-

Y

Unicode encoded product string –

2

bString

-

Y

No default setting

Page 36

GL850 USB 2.0 4-Port HUB Controller

5.4.3 Hub Class Descriptor

Hub Class Descriptor is replied to the host for the GET_DESCRIPTOR (HUB) command. There’s no

difference in the content for full speed and high speed.

Table 5.26 - Hub Class Descriptor

I/O

EEPROM

Offset

Field

Value

Description

Configuration Configuration

0

1

2

bLength

09h 9 bytes for this descriptor

29h Hub descriptor type

04h Number of ports

-

bDescriptorType

bNbrPorts

89h Individual mode

4

5

wHubCharacteristics

bPwrOn2PwrGood

Y

-

80h Gang mode

Time from power on to

32h

power good (2 ms)

6

7

8

bHubContrCurrent

bDeviceRemoveable

bPortPwrCtrlMask

64h Maximum current (mA)

00h All devices are removable

FFh For compatible to USB1.0

-

Page 37

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 6 ELECTRICAL CHARACTERISTICS

6.1 Maximum Ratings

Table 6.1 - Maximum Ratings

Parameter

Symbol

Min.

-0.5

-60

Max.

Unit

V

Power Supply

+3.6

V_CC

V_IN

Input Voltage

5

+3.6

V

Output Voltage

V_OUT

T_A

V

^oC

Ambient Temperature under bias

Frequency

+100

F_OSC

12 MHz ± 100ppm

6.2 DC Characteristics

Table 6.2 - DC Characteristics Except USB Signals

Symbol

Parameter

Min.

Typ.

Max.

Unit

P_D

V_DD

V_IL

V_IH

Power Dissipation

mA

V

Power Supply Voltage

3

3.3

3.6

0.9

LOW level input voltage

HIGH level input voltage

V_TLHLOW to HIGH threshold voltage

V_THLHIGH to LOW threshold voltage

V

2.0

1.36

V

1.48

1.62

0.4

V

V_OL

V_OH

LOW level output voltage when I_OL=8mA

HIGH level output voltage when I_OH=8mA

Leakage current for pads with internal pull up or pull

down resistor

Pad internal pull down resister

Pad internal pull up resister

V

2.4

V

I_OLK

30

µA

R_DN

R_UP

81K

103K 181K

Ω

Table 6.3 - DC Characteristics of USB Signals Under FS/LS Mode

Symbol

Parameter

Min.

Typ.

Max.

Unit

V_OL

V_OH

V_DI

V_CM

V_SE

C_IN

DPF/DMF static output LOW(R_Lof 1.5K to 3.6V )

DPF/DMF static output HIGH (R_Lof 15K to GND )

Differential input sensitivity

0.3

3.6

V

2.8

0.2

0.8

0.2

V

Differential common mode range

Single-ended receiver threshold

2.5

V

pF

µA

Ω

Transceiver capacitance

Hi-Z state data line leakage

20

+10

43

I_LO

-10

28

Z_DRVDriver output resistance

Page 38

GL850 USB 2.0 4-Port HUB Controller

Table 6.4 - DC Characteristics of USB Signals Under HS Mode

Symbol

Parameter

Min.

Typ.

Max.

Unit

Low-level input voltage with HS termination

resistor enabled, Pull-up resistor disconnected

High-level input voltage with HS termination

resistor enabled, Pull-up resistor disconnected

Low-level input voltage with HS termination

resistor enabled, Pull-up resistor connected

High-level input voltage with HS termination

resistor enabled, Pull-up resistor connected

DPH/DMH static output LOW(R_Lof 1.5K to

3.6V )

V_IL

mV

V_IH

V_IL

mV

V

V_IH

V_OL

V_OH

0.3

3.6

DPH/DMH static output HIGH (R_Lof 15K to

GND )

2.8

-10

V

C_IN

I_LO

Transceiver capacitance

20

+10

pF

µA

Ω

Hi-Z state data line leakage

Z_DRVDriver output resistance for USB2.0 HS

Page 39

GL850 USB 2.0 4-Port HUB Controller

CHAPTER 7 PACKAGE DIMENSION

D

D1

A

D2

D

A2

A1

48

49

33

32

A

B

17

64

4X

aaa C A B D

bbb H A B D

16

4X

1

e

c

ddd M C A

B s D s

b

-

01

0-

C

SEATING

PLANE

ccc

C

CONTROLDIMENSIONSAREINMILLIMETERS.

0-2

MILLIMETER

INCH

SYMBOL

MIN. NOM. MAX. MIN. NOM. MAX.

R1

R2

A

A1

A2

D

1.60

0.063

0.006

0.05

1.35

0.15 0.002

1.40 1.45 0.053 0.055 0.057

H

12.00BASIC

0.472BASIC

0.393BASIC

0.295BASIC

GAGE PLANE

E

12.00BASIC

0.25mm

S

L

D1

E1

D2

E2

R1

R2

10.00BASIC

7.50BASIC

03

-

0.08

0.003

0.08

0

0.20 0.003

0.008

7

-

0

3.5

7

0

3.5

0-1

0-2

0-3

c

0

NOTES :

11

0.09

12

13

11

12

13

0.008

1.

2.

DIMENSIONS D1 AND E1 DO NOT INCLUDE MOLD

PROTRUSION. ALLOWABLE PROTRUSION IS 0.25 mm PER

SIDE. D1 AND E1 ARE MAXIMUM PLASTIC BODY SIZE

DIMENSIONS INCLUDING MOLD MISMATCH.

0.20 0.004

L

0.45 0.60 0.75 0.018 0.024 0.030

L1

S

1.00REF

0.039REF

0.008

0.17 0.20 0.27 0.007 0.008 0.011

0.50BASIC 0.020BASIC

0.20

DIMENSION b DOES NOT INCLUDE DAMBAR PROTRUSION.

ALLOWABLE DAMBAR PROTRUSION SHALL NOT CAUSE THE

LEAD WIDTH TO EXCEED THE MAXIMUM b DIMENSION BY

MORE THAN 0.08mm. DAMBAR CAN NOT BE LOCATED ON THE

LOWER RADIUS OR THE FOOT. MINIMUM SPACE BETWEEN

PROTRUSION AND AN ADJACENT LEAD IS 0.07mm.

b

e

TOLERANCESOFFORMANDPOSITION

aaa

bbb

ccc

ddd

0.20

0.08

0.008

0.003

Figure 7.1 - GL850 64 Pin LQFP Package

Page 40

型号:	GL850
生命周期：	Contact Manufacturer
包装说明：	QFP, QFP64,.47SQ,20
Reach Compliance Code：	unknown
风险等级：	5.72
JESD-30 代码：	S-PQFP-G64
端子数量：	64
封装主体材料：	PLASTIC/EPOXY
封装代码：	QFP
封装等效代码：	QFP64,.47SQ,20
封装形状：	SQUARE
封装形式：	FLATPACK
电源：	3.3 V
认证状态：	Not Qualified
子类别：	Network Interfaces
标称供电电压：	3.3 V
表面贴装：	YES
技术：	CMOS
端子形式：	GULL WING
端子节距：	0.5 mm
端子位置：	QUAD
Base Number Matches：	1

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