DM9102AF datasheet(19/77 Pages) ETC

19 / 77 page

DM9102A

Single Chip Fast Ethernet NIC controller

Final

Version: DM9102A-DS-F03

August 28, 2000

Bit

Default

Type

Description

31:7

Undefined

PCI I/O Base Address

This is the base address value for I/O accesses cycles. It will be compared to

AD[31:7] in the address phase of bus command cycle for the I/O resource access.

6:1

000000

PCI I/O Range Indication

It indicates that the minimum I/O resource size is 80h.

I/O Space Or Memory Space Base Indicator

Determines that the register maps into the I/O space.( = 1 Indicates I/O Base)

Memory Mapped Base Address (xxxxxx14 - PCIMEM)

0000000

Memory Mapped

Base

Memory Base Address

Memory Range Indication

I/O or Memory Space Indicator

Bit

Default

Type

Description

31:7

Undefined

R/W

PCI Memory Base Address

This is the base address value for Memory accesses cycles.It will be compared to

the AD[31:7] in the address phase of bus command cycle for the Memory resource

access.

6:1

000000

PCI Memory Range Indication

It indicates that the minimum Memory resource size is 80h.

I/O Space Or Memory Space Base Indicator

Determines that the register maps into the memory space( = 0 Indicates Memory

Base)

Subsystem Identification (xxxxxx2c - PCISID)

Subsystem ID

Subsystem Vendor ID

Subsystem ID

Subsystem Vendor ID

Bit

Default

Type

Description

31:16

XXXXh

Subsystem ID

It can be loaded from EEPROM word 1 and different from each card.

15:0

XXXXh

Subsystem Vendor ID

Unique number given by PCI SIG and loaded from EEPROM word 0.

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