AM79C978A AMD [Advanced Micro Devices], AM79C978A Datasheet - Page 99

• Manufacturer Part Number: AM79C978A
• Description: Single-Chip 1/10 Mbps PCI Home Networking Controller
• Manufacturer: AMD [Advanced Micro Devices]

CSR125^
BCR2^
BCR4^
BCR5^
BCR6^
BCR7^
BCR9^
BCR18^
BCR19
BCR20
BCR22^
BCR23^
BCR24^
BCR25^
BCR26^
BCR27^
BCR32^
BCR33^
BCR35^
BCR36
BCR37
BCR38
BCR39
BCR40
BCR41
BCR42
BCR43
BCR44
BCR45
BCR46
BCR47
BCR48
BCR49
MAC Enhanced Configuration Control
Miscellaneous Configuration
LED0 Status
LED1 Status
LED2 Status
LED3 Status
Full-Duplex Control
Bus and Burst Control
EEPROM Control and Status
Software Style
PCI Latency
PCI Subsystem Vendor ID
PCI Subsystem ID
SRAM Size
SRAM Boundary
SRAM Interface Control
Internal PHY Control and Status
Internal PHY Address
PCI Vendor ID
PCI
PCI DATA Register 0 (DATA0) Alias Register
PCI DATA Register 1 (DATA1) Alias Register
PCI DATA Register 2 (DATA2) Alias Register
PCI DATA Register 3 (DATA3) Alias Register
PCI DATA Register 4 (DATA4) Alias Register
PCI DATA Register 5 (DATA5) Alias Register
PCI DATA Register 6 (DATA6) Alias Register
PCI DATA Register 7 (DATA7) Alias Register
OnNow Pattern Matching Register 1
OnNow Pattern Matching Register 2
OnNow Pattern Matching Register 3
LED4 Status
PHY Select
(PMC) Alias Register
Power
Management Capabilities
Am79C978A
n Running Registers
These registers are intended to be used by the device
driver software after the Am79C978A controller is run-
ning to access status information and to pass control
information.
The following is a list of the registers that would typically
need to be periodically read and perhaps written during
the normal running operation of the Am79C978A con-
troller within a system. Each of these registers contains
control bits, or status bits, or both.
RAP
CSR0
CSR3
CSR4
CSR5
CSR7
CSR112
CSR114
BCR32
BCR33
BCR34
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 Am79C978A 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 Am79C978A controller within AMD's prod-
uct line. The Am79C978A 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 AMD.
Register Address Port
Controller Status
Interrupt Masks and Deferral Control
Test and Features Control
Extended Control and Interrupt
Extended Control and Interrupt 2
Missed Frame Count
Receive Collision Count
Internal PHY Control and Status
Internal PHY Address
Internal PHY Management Data
99