AMD-761 Datasheet, PDF (47/264 Pages) Advanced Micro Devices – AMD-761-TM System Controller Software/BIOS Design Guide

24081D—February 2002
Preliminary Information
AMD-761™ System Controller Software/BIOS Design Guide
PCI Revision ID and Class Code
31
30
29
28
27
26
Bit
Class_Code
Reset
0
0
0
0
0
1
R/W
R
23
22
21
20
19
18
Bit
Sub-Class_Code
Reset
0
0
0
0
0
0
R/W
R
15
14
13
12
11
10
Bit
Prog_I/F
Reset
0
0
0
0
0
0
R/W
R
7
6
5
4
3
2
Bit
Rev_ID^{(See Programming Notes below.)}
Reset
0
0
0
1
0
0
R/W
R
Register Description
Dev0:F0:0x08
25
24
1
0
17
16
0
0
9
8
0
0
1
0
0
0
Bit Definitions
Bit Name
31–24 Class_Code
23–16
15–8
Sub-
Class_Code
Prog_I/F
7–0 Rev_ID
PCI Revision ID and Class Code (Dev0:F0:0x08)
Function
Class Code
Indicates a bridge device.
Sub-Class Code
Indicates a Host/PCI bridge.
Program Interface
Indicates a Host/PCI bridge.
Revision Identification
Identifies revision number of the device.
Programming Notes
Refer to the AMD-761™ System Controller Revision Guide, order# 23613, for details of the Rev_ID field for each silicon
revision.
Chapter 2
AMD-761™ System Controller Programmer’s Interface
35