AMD-761 Datasheet, PDF (128/264 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
Bit Definitions (Continued)
DDR MAB/MAA Pad Configuration (Dev0:F1:0x98)
Bit Name
Function
13–11 PSlewMAA
MAA Rising Edge Slew Rate
These bits control the rising edge slew rate of the MAA[14:0] pins.
000 = Slew rate 0 (slowest)
001 = Slew rate 1
010 = Slew rate 2
011 = Slew rate 3
100 = Slew rate 4
101 = Slew rate 5
110 = Slew rate 6
111 = Slew rate 7 (fastest)
10–8 NSlewMAA
MAA Falling Edge Slew Rate
These bits control the falling edge slew rate of the MAA[14:0] pins.
000 = Slew rate 0 (slowest)
001 = Slew rate 1
010 = Slew rate 2
011 = Slew rate 3
100 = Slew rate 4
101 = Slew rate 5
110 = Slew rate 6
111 = Slew rate 7 (fastest)
7–4 Reserved
Reserved
3–2 PDrvMAA
MAA P Transistor Drive Strength
These bits control the P transistor drive strength of the MAA[14:0] pins.
00 = Drive strength 0 (weakest)
01 = Drive strength 1
10 = Drive strength 2
11 = Drive strength 3 (strongest)
1–0 NDrvMAA
MAA N Transistor Drive Strength
These bits control the N transistor drive strength of the MAA[14:0] pins.
00 = Drive strength 0 (weakest)
01 = Drive strength 1
10 = Drive strength 2
11 = Drive strength 3 (strongest)
Programming Notes
116
AMD-761™ System Controller Programmer’s Interface
Chapter 2