DM9010
Single Chip Ethernet Controller with General Processor Interface
5. Pin Description
I= Input, O=Output, I/O= Input/Output, O/D= Open Drain, P= Power,
LI= reset Latch Input, #= asserted low, PD=internal pull-low about 60K ohm, PU=internal pull-high
5.1 MII Interface
Pin No.
Pin Name
I/O
Description
37
LINK_I
I,PD External MII device link status
I,PD External MII Receive Data
41,40,39,
RXD [3:0]
38
43
4-bit nibble data input (synchronous to RXCLK) when in 10/100 Mbps. MII mode
I/O,PD External MII Carrier Sense
CRS
Active high to indicate the pressure of carrier, due to receive or transmit activities
in 10 Base-T or 100 Base-TX mode. This pin is output in reverse MII interface.
I/O,PD External MII Collision Detect. This pin is output in reverse MII interface.
44
45
46
47
49
COL
RX_DV
RX_ER
RX_CLK
TX_CLK
TXD [3:0]
I,PD External MII Receive Data Valid
I,PD External MII Receive Error
I,PD External MII Receive Clock
I/O,PD External MII Transmit Clock. This pin in output in MII interface.
53,52,51,
50
O,PD External MII Transmit Data
4-bit nibble data outputs (synchronous to the TX_CLK) when in 10/100Mbps
nibble mode
TXD [2:0] is also used as the strap pins of IO base address.
IO base = (strap pin value of TXD [2:0]) * 10H + 300H
O,PD External MII Transmit Enable
54
56
57
TX_ EN
MDIO
MDC
I/O,PD MII Serial Management Data
O,PD MII Serial Management Data Clock
This pin is also used as the strap pin of the polarity of the INT pin
When the MDC pin is pulled high, the INT pin is low active; otherwise the INT pin
is high active
5.2 Processor Interface
1
2
3
4
IOR#
IOW#
AEN
I,PD Processor Read Command
This pin is low active at default; its polarity can be modified by EEPROM setting.
See the EEPROM content description for detail
I,PD Processor Write Command
This pin is low active at default; its polarity can be modified by EEPROM setting.
See the EEPROM content description for detail
I,PD Address Enable
A low active signal used to select the DM9010.
IOWAIT
O,PD Processor Command Ready
When a command is issued before last command is completed, the IOWAIT will
be pulled low to indicate the current command is waited
The polarity and output type can be updated by EEPROM. The default is
Preliminary
11
Version: DM9010-17--DS-P04
Jan. 18, 2006
DAVICOM [ DAVICOM SEMICONDUCTOR, INC. ]
