AM79C978VCSLASHW datasheet(102/261 Pages) AMD

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102

Am79C978

CSR125^

MAC Enhanced Configuration Control

BCR2^

Miscellaneous Configuration

BCR4^

LED0 Status

BCR5^

LED1 Status

BCR6^

LED2 Status

BCR7^

LED3 Status

BCR9^

Full-Duplex Control

BCR18^

Bus and Burst Control

BCR19

EEPROM Control and Status

BCR20

Software Style

BCR22^

PCI Latency

BCR23^

PCI Subsystem Vendor ID

BCR24^

PCI Subsystem ID

BCR25^

SRAM Size

BCR26^

SRAM Boundary

BCR27^

SRAM Interface Control

BCR32^

Internal PHY Control and Status

BCR33^

Internal PHY Address

BCR35^

PCI Vendor ID

BCR36

PCI Power Management Capabilities

(PMC) Alias Register

BCR37

PCI DATA Register 0 (DATA0) Alias

BCR38

PCI DATA Register 1 (DATA1) Alias

BCR39

PCI DATA Register 2 (DATA2) Alias

BCR40

PCI DATA Register 3 (DATA3) Alias

BCR41

PCI DATA Register 4 (DATA4) Alias

BCR42

PCI DATA Register 5 (DATA5) Alias

BCR43

PCI DATA Register 6 (DATA6) Alias

BCR44

PCI DATA Register 7 (DATA7) Alias

BCR45

OnNow Pattern Matching Register 1

BCR46

OnNow Pattern Matching Register 2

BCR47

OnNow Pattern Matching Register 3

BCR48

LED4 Status

BCR49

PHY Select

n Running Registers

These registers are intended to be used by the device

driver software after the Am79C978 controller is run-

ning to access status information and to pass control

information.

The following is a list of the registers that would typi-

cally need to be periodically read and perhaps written

during the normal running operation of the Am79C978

controller within a system. Each of these registers con-

tains control bits, or status bits, or both.

RAP

CSR0

Controller Status

CSR3

Interrupt Masks and Deferral Control

CSR4

Test and Features Control

CSR5

Extended Control and Interrupt

CSR7

Extended Control and Interrupt2

CSR112

Missed Frame Count

CSR114

Receive Collision Count

BCR32

Internal PHY Control and Status

BCR33

Internal PHY Address

BCR34

Internal PHY Management Data

n Test Registers

These registers are intended to be used only for testing

and diagnostic purposes. Those registers not included

in any of the above lists can be assumed to be intended

for diagnostic purposes.

PCI Configuration Registers

PCI Vendor ID Register

Offset 00h

The PCI Vendor ID register is a 16-bit register that iden-

tifies the manufacturer of the Am79C978 controller.

AMD’s Vendor ID is 1022h. Note that this Vendor ID is

not the same as the Manufacturer ID in CSR88 and

CSR89. The Vendor ID is assigned by the PCI Special

Interest Group.

The PCI Vendor ID register is located at offset 00h in

the PCI Configuration Space. It is read only.

This register is the same as BCR35 and can be written

by the EEPROM.

PCI Device ID Register

Offset 02h

The PCI Device ID register is a 16-bit register that

helps identify the Am79C978 controller within AMD's

product line. The Am79C978 Device ID is 2001h. Note

that this Device ID is not the same as the part number

in CSR88 and CSR89. The Device ID is assigned by

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