ICS951464 Datasheet, PDF (5/24 Pages) Integrated Device Technology – Programmable System Clock Chip for ATI RS/RD690 K8TM - based Systems

ICS951464
IDT^TM/ICST^M Programmable System Clock Chip for ATI RS/RD690 K8^TM - based Systems
Table1: CPU and HTT Frequency Selection Table
Byte 0
Bit4 Bit3 Bit2 Bit1 Bit0 CPUCLK
(2:0)
CPU CPU CPU CPU CPU _(MHz)
SS_EN FS3 FS2 FS1 FS0
HTT
(MHz)
Spread
%
Overclock
%
0
0000
Hi-Z
Hi-Z None
0
0 0 0 1 X/2
X / 3 None
0
0 0 1 0 230.00 76.67 ^None
15%
0
0 0 1 1 240.00 80.00 None
20%
0
0 1 0 0 100.00 66.67 None
0
0 1 0 1 133.33 66.67 None
0
0 1 1 0 166.67 66.67 None
0%
0
0 1 1 1 200.00 66.67 None
0
1 0 0 0 250.00 83.33 None
25%
0
1 0 0 1 260.00 86.67 None
30%
0
1 0 1 0 270.00 90.00 None
35%
0
1 0 1 1 280.00 93.33 None
40%
0
1 1 0 0 102.00 68.00 None
0
1 1 0 1 136.00 68.00 None
0
1 1 1 0 170.00 68.00 None
2%
0
1 1 1 1 204.00 68.00 None
1
0 0 0 0 210.00 70.00 -0.5%
5%
1
0 0 0 1 220.00 73.33 -0.5%
10%
1
0 0 1 0 230.00 76.67 -0.5%
15%
1
0 0 1 1 240.00 80.00 -0.5%
20%
1
0 1 0 0 100.00 66.67 -0.5%
1
1
0 1 0 1 133.33 66.67 -0.5%
0 1 1 0 166.67 66.67 -0.5%
0%
1
0 1 1 1 200.00 66.67 -0.5%
1
1 0 0 0 250.00 83.33 -0.5%
25%
1
1 0 0 1 260.00 86.67 -0.5%
30%
1
1 0 1 0 270.00 90.00 -0.5%
35%
1
1 0 1 1 280.00 93.33 -0.5%
40%
1
1 1 0 0 102.00 68.00 -0.5%
1
1
1 1 0 1 136.00 68.00 -0.5%
1 1 1 0 170.00 68.00 -0.5%
2%
1
1 1 1 1 204.00 68.00 -0.5%
IDT^TM/ICST^M Programmable System Clock Chip for ATI RS/RD690 K8^TM - based Systems
5
1211B—09/17/09