DM9000_09 DAVICOM [Davicom Semiconductor, Inc.], DM9000_09 Datasheet
DM9000_09
Manufacturer Part Number
DM9000_09
Description
ISA to Ethernet MAC Controller with Integrated 10/100 PHY
Manufacturer
DAVICOM [Davicom Semiconductor, Inc.]
Datasheet
1.DM9000_09.pdf
(53 pages)
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1. General Description
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
2. Block Diagram
Final
Version: DM9000-DS-F03
April 23, 2009
TX+/-
RX+/-
100 Base-TX
transceiver
PHYceiver
Autonegotiation
LED
100 Base-TX
10 Base-T
ISA to Ethernet MAC Controller with Integrated 10/100 PHY
Tx/Rx
PCS
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.
MII Management
& MII Register
Control
MII
External MII
Interface
TX Machine
RX Machine
Control &Status
Registers
MAC
EEPROM
Management
Interface
Internal
Memory
SRAM
DM9000
1
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