DM9000_09 DAVICOM [Davicom Semiconductor, Inc.], DM9000_09 Datasheet - Page 11

• Manufacturer Part Number: DM9000_09
• Description: ISA to Ethernet MAC Controller with Integrated 10/100 PHY
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

6. Vendor Control and Status Register Set
The DM9000 implements several control and status
registers, which can be accessed by the host. These CSRs
Final
Version: DM9000-DS-F03
April 23, 2009
Register
MWCMDX
MRCMDX
MWCMD
MRCMD
RWPAH
RWPAL
EPDRH
EPDRL
TRPAH
TRPAL
CHIPR
MWRL
ROCR
SMCR
MRRH
GPCR
MRRL
TSR II
EPCR
EPAR
BPTR
FCTR
TSR I
WCR
MAR
NCR
RCR
GPR
NSR
TCR
RSR
FCR
PAR
VID
PID
Description
Network Control Register
Network Status Register
TX Control Register
TX Status Register I
TX Status Register II
RX Control Register
RX Status Register
Receive Overflow Counter Register
Back Pressure Threshold Register
Flow Control Threshold Register
RX Flow Control Register
EEPROM & PHY Control Register
EEPROM & PHY Address Register
EEPROM & PHY Low Byte Data Register
EEPROM & PHY High Byte Data Register
Wake Up Control Register
Physical Address Register
Multicast Address Register
General Purpose Control Register
General Purpose Register
TX SRAM Read Pointer Address Low Byte
TX SRAM Read Pointer Address High Byte
RX SRAM Write Pointer Address Low Byte
RX SRAM Write Pointer Address High Byte
Vendor ID
Product ID
CHIP Revision
Special Mode Control Register
Memory Data Read Command Without Address Increment
Register
Memory Data Read Command With Address Increment
Register
Memory Data Read_ address Register Low Byte
Memory Data Read_ address Register High Byte
Memory Data Write Command Without Address Increment
Register
Memory Data Write Command With Address Increment
Register
Memory Data Write_ address Register Low Byte
ISA to Ethernet MAC Controller with Integrated 10/100 PHY
are byte aligned. All CSRs are set to their default values by
hardware or software reset unless they are specified
Offset
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
0AH
0BH
0CH
0DH
0EH
0FH
10H-15H
16H-1DH
1EH
1FH
22H
23H
24H
25H
28H-29H
2AH-2BH
2CH
2FH
F0H
F2H
F4H
F5H
F6H
F8H
FAH
Default value
after reset
00H
00H
00H
00H
00H
00H
00H
00H
37H
38H
00H
00H
40H
XXH
XXH
00H
Determined by
EEPROM
XXH
01H
XXH
00H
00H
04H
0CH
0A46H
9000H
00H
00H
XXH
XXH
00H
00H
XXH
XXH
00H
DM9000
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