AM79C973KCW Advanced Micro Devices, AM79C973KCW Datasheet - Page 256
AM79C973KCW
Manufacturer Part Number
AM79C973KCW
Description
PCnet-FAST III Single-Chip 10/100 Mbps PCI Ethernet Controller with Integrated PHY
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C973KCW.pdf
(304 pages)
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Node ID Registers
The following registers provide the IEEE and IP ad-
dresses of the node using the Am79C975 devices, as
well as of the management station.
Node IEEE Address 0 (MReg Address 9)
This register is a shadow register of the APROM loca-
tion 00h. APROM location 00h is loaded from the EE-
PROM.
Bit No. Name and Description
7:0
Node IEEE Address 1 (MReg Address 10)
This register is a shadow register of the APROM loca-
tion 01h. APROM location 01h is loaded from the EE-
PROM.
Bit No. Name and Description
7:0
Node IEEE Address 2 (MReg Address 11)
This register is a shadow register of the APROM loca-
tion 02h. APROM location 02h is loaded from the EE-
PROM.
Bit No. Name and Description
7:0
256
These are the upper 8-bits of a register that to-
gether with the Subsystem Vendor ID uniquely
identifies the add-in card or subsystem the
Am79C975 device is used in.
N_IEEE_ADR[7:0]
Default: 00h Read only, write has no effect.
Byte 0 (the LSB) of the Node IEEE Address
register. The Node IEEE Address is the unique
48-bit address of the station, the Am79C975
controller is used in.
N_IEEE_ADR[15:8]
Default: 00h Read only, write has no effect.
Byte 1 of the Node IEEE Address register. The
Node IEEE Address is the unique 48-bit ad-
dress of the station, the Am79C975 controller
is used in.
N_IEEE_ADR[23:16]
Default: 00h Read only, write has no effect.
Byte 2 of the Node IEEE Address register. The
Node IEEE Address is the unique 48-bit ad-
dress of the station, the Am79C975 controller
is used in.
P R E L I M I N A R Y
Am79C973/Am79C975
Node IEEE Address 3 (MReg Address 12)
This register is a shadow register of the APROM loca-
tion 03h. APROM location 03h is loaded from the EE-
PROM.
Bit No. Name and Description
7:0
Node IEEE Address 4 (MReg Address 13)
This register is a shadow register of the APROM loca-
tion 04h. APROM location 04h is loaded from the EE-
PROM.
Bit No. Name and Description
7:0
Node IEEE Address 5 (MReg Address 14)
This register is a shadow register of the APROM loca-
tion 05h. APROM location 05h is loaded from the EE-
PROM.
Bit No. Name and Description
7:0
Node IP Address 0 (MReg Address 15)
This register is loaded from the EEPROM.
Bit No. Name and Description
7:0
N_IEEE_ADR[31:24]
Default: 00h Read only, write has no effect.
Byte 3 of the Node IEEE Address register. The
Node IEEE Address is the unique 48-bit ad-
dress of the station, the Am79C975 controller
is used in.
N_IEEE_ADR[39:32]
Default: 00h Read only, write has no effect.
Byte 4 of the Node IEEE Address register. The
Node IEEE Address is the unique 48-bit ad-
dress of the station, the Am79C975 controller
is used in.
N_IEEE_ADR[47:40]
Default: 00h Read only, write has no effect.
Byte 5 (the MSB) of the Node IEEE Address
register. The Node IEEE Address is the unique
48-bit address of the station, the Am79C975
controller is used in.
N_IP_ADR[7:0]Default: 00hRead only, write
has no effect.
Byte 0 (the LSB) of the Node IP Address regis-
ter. The Node IP Address is the 32-bit address
used in the IP protocol header to address the
station, the Am79C975 controller is used in.
This register can also be used as general pur-
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