ICS94235 Datasheet, PDF (6/19 Pages) Integrated Circuit Systems – PROGRAMMABLE SYSTEM CLOCK CHIP FOR AMD-K7 TM PROCESSOR

ICS94235
Serial Configuration Command Bitmap
Bit
Description
Bit 2,
Bit 7:4
Bit 3
Bit 1
Bit 0
FS3 FS2 FS1 FS0 CPUCLK SDRAM PCICLK
Bit2 Bit7 Bit6 Bit5 Bit4 (MHz) (MHz) (MHz)
0 0000
66.66
66.66 33.33
0 0 0 0 1 66.66 100.00 33.33
0 0 0 1 0 100.00 66.66 33.33
0 0 0 1 1 100.00 100.00 33.33
0 0 1 0 0 100.00 133.33 33.33
0 0 1 0 1 120.00 120.00 30.00
0 0 1 1 0 133.33 100.00 33.33
0 0 1 1 1 133.33 133.33 33.33
0 1000
90.00
90.00 30.00
0 1 0 0 1 100.90 100.90 33.63
0 1 0 1 0 100.00 66.66 33.33
0 1 0 1 1 100.00 100.00 33.33
0 1 1 0 0 100.00 133.33 33.33
0 0 1 0 1 126.00 126.00 31.50
0 1 1 1 0 133.33 100.00 33.33
0 1 1 1 1 133.33 133.33 33.33
1 0 0 0 0 102.00 102.00 34.00
1 0 0 0 1 102.00 136.00 34.00
1 0 0 1 0 136.00 102.00 34.00
1 0 0 1 1 136.00 136.00 34.00
1 0 1 0 0 103.00 103.00 34.33
1 0 1 0 1 103.00 137.33 34.33
1 0 1 1 0 137.33 103.00 34.33
1 0 1 1 1 137.33 137.33 34.33
1 1 0 0 0 105.00 105.00 35.00
1 1 0 0 1 105.00 140.00 35.00
1 1 0 1 0 140.00 140.00 35.00
1 1 0 1 1 107.00 107.00 35.66
1 1 1 0 0 107.00 142.66 35.66
1 1 1 0 1 133.90 133.90 33.40
1 1 1 1 0 110.00 110.00 36.66
1 1 1 1 1 146.66 146.66 36.66
0 - Frequency is selected by hardware select, Latched Inputs
1 - Frequency is selected by Bit 2, 7:4
0 - Normal
1 - Spread Spectrum Enabled
0 - Running
1- Tristate all outputs
AGP
(MHz)
66.66
66.66
66.66
66.66
66.66
60.00
66.66
66.66
60.00
67.27
66.66
66.66
66.66
63.00
66.66
66.66
67.99
67.99
67.99
67.99
68.66
68.66
68.66
68.66
69.99
69.99
69.99
71.33
71.33
66.95
73.33
73.33
Spread Precentage
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
0 to -0.5% Down Spread
0 to -0.5% Down Spread
0 to -0.5% Down Spread
+/- 0.25% Center Spread
0 to -0.5% Down Spread
0 to -0.5% Down Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
+/- 0.25% Center Spread
PWD
00000
Note1
0
0
0
Third party brands and names are the property of their respective owners.