ICS9LPRS480 Datasheet, PDF (9/25 Pages) Integrated Device Technology – Programmable System Clock Chip for ATI RS780 - K8TM based Systems

Integrated
Circuit
Systems, Inc.
Table 2: SB_SRC Frequency Selection Table
Byte 0
Byte 4
Bit0 Bit3 Bit2 Bit1 Bit0 SRC Spread
SB SB SB SB (MHz)
%
SS_EN _{FS3 FS2 FS1 FS0}
0
0 0 0 0 80.00
0
0 0 0 1 81.25
0
0 0 1 0 82.63
0
0 0 1 1 84.00
0
0 1 0 0 85.25
0
0 1 0 1 86.63
0
0 1 1 0 88.00
0
0
1
1
1
89.25
Off
0
1 0 0 0 90.63
0
1 0 0 1 92.00
0
1 0 1 0 93.25
0
1 0 1 1 94.63
0
1 1 0 0 96.00
0
1 1 0 1 97.25
0
1 1 1 0 98.63
0
1 1 1 1 100.00
1
0 0 0 0 80.00
1
0 0 0 1 81.25
1
0 0 1 0 82.63
1
0 0 1 1 84.00
1
0 1 0 0 85.25
1
0 1 0 1 86.63
1
0 1 1 0 88.00
1
0
1
1
1
89.25 _-0.50%
1
1 0 0 0 90.63
1
1 0 0 1 92.00
1
1 0 1 0 93.25
1
1 0 1 1 94.63
1
1 1 0 0 96.00
1
1 1 0 1 97.25
1
1 1 1 0 98.63
1
1 1 1 1 100.00
SB_SRC
OverClock %
-20%
-19%
-17%
-16%
-15%
-13%
-12%
-11%
-9%
-8%
-7%
-5%
-4%
-3%
-1%
0%
20%
-19%
-17%
-16%
-15%
-13%
-12%
-11%
-9%
-8%
-7%
-5%
-4%
-3%
-1%
0%
ICS9LPRS480
1391D—02/02/09
9