DM9008 Ver la hoja de datos (PDF) - Davicom Semiconductor, Inc.

Número de pieza

componentes Descripción

Lista de partido

DM9008

ISA/Plug & Play Super Ethernet Contoller

Davicom Semiconductor, Inc. 

Interrupt Configuration Registers

Index

Name

70H

IRQ level

71H

IRQ type

bits[7:0]

DMA Configuration Registers

Index

Name

74H

DMA channel select 0

75H

DMA channel select 1

Vendor Defined Registers

Index

Name

F0H

CONFIG A

F1H

CONFIG B

F2H

CONFIG C

F4H

RESET CSN

Type

R/W

R

Type

R

R

Type

R

R

R

W

DM9008

ISA/Plug & Play Super Ethernet Contoller

Definition

Read/write value indicating a selected interrupt level.

Bits[3:0] select which ISA interrupt level is used. A value of 1

selects IRQ1, 15 selects IRQ15, etc. IRQ0 is not a valid

interrupt selection

Read/write value indicating which type of interrupt is used

for the IRQ selected above.

Bit[1] - Level, 1 = high, 0 = low

Bit[0] - Type, 1= level, 0 = edge

For DM9008, this register is read only, with a value of 02H

Definition

04H (indicating no DMA channel is needed)

04H (indicating no DMA channel is needed)

Definition

Direct mapping of CONFIG A register, page 0

Direct mapping of CONFIG B register, page 0

Direct mapping of the CONFIG C register, page 2

Writing bit 2 to 1 will reset DM9008 CSN to 0

Final

29

Version: DM9008-DS-F02

November 30, 2000

Share Link: