dm9621 Davicom Semiconductor, Inc., dm9621 Datasheet - Page 2

• Manufacturer Part Number: dm9621
• Description: Usb2.0 To 10/100m Fast Ethernet Controller
• Manufacturer: Davicom Semiconductor, Inc.

2. General Description
The DM9620 USB2.0 to 10/100Mbps Fast Ethernet
controller with 0.18um CMOS technology is a high
performance and highly integrated ASIC with
embedded 13KB SRAM for packet buffering. It
enables low cost and affordable Fast Ethernet
network connection to desktop, notebook PC, and
embedded system using popular USB ports.
It has an USB interface to communicate with USB
3. Block Diagram
4. Certification
5. OS Supports
6. Applications
Product Brief
Version: 1.1
April 9, 2009
TX+/-
RX+/-
(1) Linux 2.4 & 2.6, WinCE 5.0 & 6.0 (2) Win XP, VISTA, Windows 7 (3) MAC OS X v10.5
USB Dongle: PMP, MID, UMPC, DPF, Netbook, Slim Notebook, Game Console, Portable Device
Embedded System: IP STB, DMA, Card Reader, POS, DVR, IPTV, NAS, Networked Printer
100 Base-TX
transceiver
PHYceiver
USB Logo
Autonegotiation
LED
100 Base-TX
10 Base-T
Tx/Rx
PCS
www.davicom.com.tw
MII Management
& MII Register
Control
MII
External MII
Interface
host controller and is compliant with USB
specification V1.0, V1.1 and V2.0. It implements
10/100Mbps Ethernet LAN function based on
IEEE802.3, and IEEE802.3u standards.
DM9620 integrates an on-chip 10/100Mbps Ethernet
PHY to simplify system design and provides an
optional media-independent interface (MII).
TX Machine
Control &Status
RX Machine
Registers
USB2.0 to 10/100M Fast Ethernet Controller
MAC
EEPROM
Management
Interface
Memory
Internal
SRAM
DM9620/DM9621
DM
DP
2