USB 2.0 Hi-Speed 3-Port Hub Controller
Datasheet
Table 3.1 Pin Descriptions (continued)
BUFFER
TYPE
AIO
NUM PINS
NAME
Downstream
USB D-
(Swap Port 1)
SYMBOL
SWAP_USBDN1_DM
DESCRIPTION
Downstream USB Port 1 D- data signal.
Note:
The downstream Port 1 signals can be
optionally swapped with the upstream
Port 0 signals.
1
Port 1 D-
Disable
Configuration
Strap
PRT_DIS_M1
IS
This strap is used in conjunction with
PRT_DIS_P1 to disable USB Port 1.
0 = Port 1 D- Enabled
1 = Port 1 D- Disabled
Both PRT_DIS_P1 and PRT_DIS_M1
must be tied to VDD33 at reset to
disable the associated port.
See
for more information on
configuration straps.
Note:
Downstream
USB D+
(Port 2)
Port 2 D+
Disable
Configuration
Strap
USBDN2_DP
AIO
Downstream USB Port 2 D+ data signal.
PRT_DIS_P2
IS
This strap is used in conjunction with
PRT_DIS_M2 to disable USB Port 2.
0 = Port 2 D+ Enabled
1 = Port 2 D+ Disabled
Note:
Both PRT_DIS_P2 and PRT_DIS_M2
must be tied to VDD33 at reset to
disable the associated port.
See
for more information on
configuration straps.
Downstream USB Port 2 D- data signal.
1
Downstream
USB D-
(Port 2)
Port 2 D-
Disable
Configuration
Strap
USBDN2_DM
AIO
PRT_DIS_M2
IS
This strap is used in conjunction with
PRT_DIS_P2 to disable USB Port 2.
0 = Port 2 D- Enabled
1 = Port 2 D- Disabled
Both PRT_DIS_P2 and PRT_DIS_M2
must be tied to VDD33 at reset to
disable the associated port.
See
for more information on
configuration straps.
Note:
1
Revision 1.0 (06-17-13)
12
SMSC USB2533
DATASHEET
SMSC [ SMSC CORPORATION ]
