AMD-761 Datasheet, PDF (116/264 Pages) Advanced Micro Devices – AMD-761-TM System Controller Software/BIOS Design Guide

Preliminary Information
AMD-761™ System Controller Software/BIOS Design Guide
24081D—February 2002
DDR DQS/MDAT Pad Configuration
31
30
Bit
Reserved
Reset
0
0
R/W
R
29
28
PSlewMDAT
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
PSlewDQS
X
X
7
6
5
4
Bit
Reserved
Reset
0
0
0
0
R/W
R
27
26
X
X
R/W
Dev0:F1:0x8C
25
24
NSlewMDAT
X
X
19
18
17
16
PDrvMDAT
NDrvMDAT
X
X
X
X
R/W
11
10
9
8
NSlewDQS
X
X
X
X
R/W
3
2
1
0
PDrvDQS
NDrvDQS
X
X
X
X
R/W
Register Description
This register allows BIOS control of the DDR DQS and memory data pad drive strength and slew rate.
104
AMD-761™ System Controller Programmer’s Interface
Chapter 2