AMD-761 Datasheet, PDF (123/264 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
DDR CMDB/CMDA Pad Configuration
31
30
Bit
Reserved
Reset
0
0
R/W
R
29
28
PSlewCMDB
X
X
23
22
21
20
Bit
Reserved
Reset
0
0
0
0
R/W
R
15
14
Bit
Reserved
Reset
0
0
R/W
R
13
12
PSlewCMDA
X
X
7
6
5
4
Bit
Reserved
Reset
0
0
0
0
R/W
R
27
26
X
X
R/W
Dev0:F1:0x94
25
24
NSlewCMDB
X
X
19
18
17
16
PDrvCMDB
NDrvCMDB
X
X
X
X
R/W
11
10
9
8
NSlewCMDA
X
X
X
X
R/W
3
2
1
0
PDrvCMDA
NDrvCMDA
X
X
X
X
R/W
Register Description
This register allows BIOS control of the DDR RASA#, RASB#, CASA#, CASB#, WEA#, WEB#, CKEA#, and CKEB# pad
drive strength and slew rate.
Chapter 2
AMD-761™ System Controller Programmer’s Interface
111