DAVICOM DM9000EP

DM9000EP Product Brief
Ethernet Controller with General Processor Interface
May 2008 Rev.1.0
The DM9000 is a fully integrated and cost-effective single chip Fast Ethernet MAC
controller with a general processor interface, a 10/100M PHY and 4K Dword SRAM. It is
designed with low power and high performance process that support 3.3V with 5V tolerance.
The DM9000 also provides a MII interface to connect HPNA device or other transceivers that
support MII interface. The DM9000 supports 8-bit, 16-bit and 32-bit uP interfaces to internal
memory accesses for different processors. The PHY of the DM9000 can interface to the
UTP3, 4, 5 in 10Base-T and UTP5 in 100Base-TX. It is fully compliant with the IEEE 802.3u
Spec. Its auto-negotiation function will automatically configure the DM9000 to take the
maximum advantage of its abilities. The DM9000 also supports IEEE 802.3x full- duplex
flow control. This programming of the DM9000 is very simple, so user can port the software
drivers to any system easily.
Block Diagram
PHYceiver
MAC
100 Base-TX
PCS
TX Machine
MII
TX+/10 Base-T
Tx/Rx
Control &Status
Registers
Memory
Management
RX Machine
RX+/Internal
SRAM
Autonegotiation
MII Management
Control
& MII Register
Processor
Interface
100 Base-TX
transceiver
EEPROM
Interface
External MII
Interface
LED
Specifications
■
Supports processor interface: byte/word/dword of I/O command to internal memory data
operation
■
Integrated 10/100M transceiver
■
Supports MII and reverses MII interface
■
Supports back pressure mode for half-duplex mode flow control
■
IEEE802.3x flow control for full-duplex mode
■
Supports wakeup frame, link status change and magic packet events for remote wake up
■
Integrated 4K dword SRAM
■
Supports automatically load vendor ID and product ID from EEPROM
■
Supports 4 GPIO pins
■
Optional EEPROM configuration
■
Very low power consumption mode:
–
Power reduced mode (cable detection)
–
Power down mode
–
Selectable TX drivers for 1:1 or 1.25:1 transformers for additional power reduction.
■
Compatible with 3.3V and 5.0V tolerant I/O
■
100-pin LQFP with CMOS process
Application
VoIP CPE (ATA, IP Phone, Video Phone)
IP STB, IPC, Internet Radio
Ordering Information
Part Number
Pin Count
DM9000E
100
DM9000EP
100
Package
LQFP
LQFP
(Pb-Free)
DAVICOM Semiconductor, Inc.
No.6, Li-Hsin Rd.VI, Science Park, Hsin-Chu, Taiwan, R.O.C.
TEL: 886-3-5798797
FAX: 886-3-5646929
E-mail: sales@davicom.com.tw