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AM79C974 Datasheet(PDF) 113 Page - Advanced Micro Devices

Part # AM79C974
Description  PCnetTM-SCSI Combination Ethernet and SCSI Controller for PCI Systems
PDF  153 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C974 Datasheet(HTML) 113 Page - Advanced Micro Devices

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AMD
P R E L I M I N A R Y
113
Am79C974
Ethernet Controller
Control and Status Registers
Note: u = undefined value, R = Running register, S = Setup register, T = Test register
Default Value
After
RAP Addr
Symbol
H_RESET
Comments
Use
00
CSR0
uuuu 0004
PCnet-SCSI Status Register
R
01
CSR1
uuuu uuuu
IADR[15:0]: Base Address of INIT Block Lower
S
02
CSR2
uuuu uuuu
IADR[31:16]: Base Address of INIT Block Upper
S
03
CSR3
uuuu 0000
Interrupt Masks and Deferral Control
S
04
CSR4
uuuu 0115
Test and Features Control
R
05
CSR5
uuuu 0000
Reserved
T
06
CSR6
uuuu uuuu
RXTX: RX/TX Descriptor Table Lengths
T
07
CSR7
uuuu 0000
Reserved
T
08
CSR8
uuuu uuuu
LADR0: Logical Address Filter — LADRF[15:0]
T
09
CSR9
uuuu uuuu
LADR1: Logical Address Filter — LADRF[31:16]
T
10
CSR10
uuuu uuuu
LADR2: Logical Address Filter — LADRF[47:32]
T
11
CSR11
uuuu uuuu
LADR3: Logical Address Filter — LADRF[63:48]
T
12
CSR12
uuuu uuuu
PADR0: Physical Address Register — PADR[15:0]
T
13
CSR13
uuuu uuuu
PADR1: Physical Address Register — PADR[31:16]
T
14
CSR14
uuuu uuuu
PADR2: Physical Address Register — PADR[47:32]
T
15
CSR15
see reg. desc.
MODE: Mode Register
S
16
CSR16
uuuu uuuu
IADR[15:0]: Alias of CSR1
T
17
CSR17
uuuu uuuu
IADR[31:16]: Alias of CSR2
T
18
CSR18
uuuu uuuu
CRBAL: Current RCV Buffer Address Lower
T
19
CSR22
uuuu uuuu
CRBAU: Current RCV Buffer Address Upper
T
20
CSR20
uuuu uuuu
CXBAL: Current XMT Buffer Address Lower
T
21
CSR21
uuuu uuuu
CXBAU: Current XMT Buffer Address Upper
T



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