DM9620/DM9621
USB2.0 to 10/100M Fast Ethernet Controller
1. Features
USB Interface
USB2.0 Device
Supports 480Mbps High-Speed
operation
Supports 12Mbps Full-Speed
operation
Supports suspend mode and remote
wake-up resume
Supports USB standard commands
Supports vendor specific commands
Supports 4 endpoints (Control,
Interrupt, Bulk_IN, Bulk_OUT)
Ethernet
Support IEEE802.3u 100BASE-TX
and with IEEE802.3 10BASE-T
standards
Support IEEE802.3x flow control
function for 100BASE-TX and
10BASET.
Built-in 10/100Mbps Fast-Ethernet
PHY
Support HP Auto-MDIX
Supports MII, RMII and Reverse MII
interface
Supports Auto-negotiation function
Back Pressure Mode for half-duplex
mode flow Control
PAUSE frame for full-duplex flow
control
Supports wakeup frame, link status
change and Magic packet events for
remote wake-up
Embedded 13KB SRAM for RX
packet buffering and 3KB SRAM for
TX
Support TCP / UDP / IP checksum
offload checking and generating
EEPROM Interface
Supports automatically load vendor
ID and Product ID from EEPROM
Supports 128/256/512 bytes
(93C46/93C56/93C66) of serial
EEPROM (for storing USB
Descriptors)
93C46 / 93C66 auto-detection
LED Indications
Ethernet – Link / Act indication
Ethernet – Speed (10M / 100M)
indication
Ethernet – Duplex (half / full)
indication
USB speed indication (full / high
speed + traffic modes)
GPIO Pins
GPIO #1 – wake-up signal to CPU
GPIO #2 – Serial Debugging Port
interface (clock)
GPIO #3 – Serial Debugging Port
interface (data)
Clock
Single 25MHz / 30 ppm crystal or
oscillator for Ethernet and 12MHz
for USB
Power Input
Low-Power, Single-Supply 3.3V
Built in 3.3V to 1.8V regulator
Miscellaneous
Very Low Power Consumption
mode
Power Reduced mode (cable
detection), and Power Down mode
Compatible with 2.5V, 3.3V and
5.0V tolerant I/O
Supports commercial and industrial
grade
Package
DM9620 64 pin LQFP
(with MII/RMII I/F)
DM9621 48 pin QFN
Product Brief
Version: 1.2
February 2, 2010
www.davicom.com.tw
1
DAVICOM [ DAVICOM SEMICONDUCTOR, INC. ]
