DM9008F View Datasheet(PDF) - Davicom Semiconductor, Inc.
Part Name
Description
MFG CO.
'DM9008F' PDF : 68 Pages View PDF
Card Control Registers
Index
Name
00H
Set RD_DATA port
01H
Serial Isolation
02H
Config Control
03H
Wake[CSN]
04H
Resource Data
05H
Status
06H
Card Select Numbe
(CSN)
07H
Logical Device
DM9008
ISA/Plug & Play Super Ethernet Contoller
Type
W
R
W
W
R
R
R/W
R
Definition
The location of the READ_DATA port is determined by
writing to this register. Bits[7:0] become ISA I/O read port
address bits[9:2]. Address bits[1:0] of the READ_DATA port
are always1
A read to this register causes a PnP card in the Isolation state
to compare one bit of the card's serial ID. This process is
described in more detail on page 34
Bit[0] - Reset command
Setting this bit will reset all logical devices and restore
configuration registers to their power-up values
The CSN is preserved
Bit[1] - Wait for Key command
Setting this bit makes the PnP card return to the Wait for
Key state. The CSN is preserved
Bit[2] - PnP Reset CSN command
Setting this bit will reset the card's CSN to 0
Note that the hardware will automatically clear the bits
without any need for software to clear them
A write to this register will cause all cards that have a CSN
that matches the write data[7:0] to go from the Sleep state to
either the 1) Isolation state if the write data for this command
is zero, or 2) Config state if the write data is not zero
A read from this register reads the next byte of resource data.
The Status register must be polled until bit[0] is set before this
register may be read
Bit[0], when set, indicates it is O.K. to read the next data byte
from the Resource Data register
A write to this register sets a card's CSN. The CSN's value is
uniquely assigned to each ISA PnP card after the serial
identification process so that each card may be individually
selected during a Wake[CSN] command
00H (Only one logical device in DM9008)
Final
27
Version: DM9008-DS-F02
November 30, 2000
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