ICS9248-96(2000) データシートの表示（PDF） - Integrated Circuit Systems
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ICS9248-96
(Rev.:2000)
(Rev.:2000)
Integrated Circuit Systems
ICS9248-96 Datasheet PDF : 12 Pages
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ICS9248-96
Preliminary Product Preview
Serial Configuration Command Bitmap
Byte0: Functionality and Frequency Select Register (default = 0)
Bit
Description
Bit (2, 7:4)
CPUCLK SDRAM 3V66 PCICLK
(MHz) (MHz) (MHz) (MHz)
0 0 0 0 0 66.80 100.20 66.80
0 0 0 0 1 68.00 102.00 68.00
0 0 0 1 0 100.30 100.30 66.87
0 0 0 1 1 103.00 103.00 68.67
0 0 1 0 0 133.73 100.30 66.87
0 0 1 0 1 145.00 108.75 72.50
0 0 1 1 0 133.73 100.30 66.87
0 0 1 1 1 137.33 103.00 68.67
0 1 0 0 0 140.00 105.00 70.00
0 1 0 0 1 140.00 140.00 93.33
0 1 0 1 0 118.00 118.00 78.67
0 1 0 1 1 124.00 124.00 82.67
0 1 1 0 0 133.70 133.70 89.13
0 1 1 0 1 137.00
Bit 2, 0 1 1 1 0 150.00
Bit 7:4 0 1 1 1 1 72.50
137.00
112.50
108.75
91.33
75.00
72.50
1 0 0 0 0 75.00 112.50 75.00
1 0 0 0 1 83.00
83.00 27.67
1 0 0 1 0 110.00 110.00 73.33
1 0 0 1 1 120.00 120.00 80.00
1 0 1 0 0 125.00 125.00 83.33
1 0 1 0 1 69.25 103.88 69.25
1 0 1 1 0 70.00 105.00 70.00
1 0 1 1 1 76.67 115.00 76.67
1 1 0 0 0 145.00 145.00 96.67
1 1 0 0 1 66.50
99.75 66.50
1 1 0 1 0 150.00 150.00 100.00
1 1 0 1 1 99.75
99.75 66.50
1 1 1 0 0 155.00 155.00 103.33
1 1 1 0 1 166.50 166.50 111.00
1 1 1 1 0 153.33 115.00 76.67
Bit 3
Bit 1
Bit 0
1 1 1 1 1 133.00 99.75 66.50
0 - Frequency is selected by hardware select, Latched Inputs
1 - Frequency is selected by Bit 2, 7:4
0 - Normal
1 - Spread Spectrum Enabled ± 0.25% Center Spread
0 - Running
1- Tristate all outputs
33.40
34.00
33.43
34.33
33.43
36.25
33.43
34.33
35.00
46.67
39.33
41.33
44.57
45.67
37.50
36.25
37.50
13.83
36.67
40.00
41.67
34.63
35.00
38.33
48.33
33.25
50.00
33.25
51.67
55.50
38.33
33.25
FREQ_IOAPIC
(MHz)
1
0
16.70 33.40
17.00 34.00
16.72 33.43
17.17 34.33
16.72 33.43
18.13 36.25
16.72 33.43
17.17 34.33
17.50 35.00
23.33 46.67
19.67 39.33
20.67 41.33
22.28 44.57
22.83 45.67
18.75 37.50
18.13 36.25
18.75 37.50
6.92 13.83
18.33 36.67
20.00 40.00
20.83 41.67
17.31 34.63
17.50 35.00
19.17 38.33
24.17 48.33
16.63 33.25
25.00 50.00
16.63 33.25
25.83 51.67
27.75 55.50
19.17 38.33
16.63 33.25
Spread Precentage
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center*
+/- 0.25% Center*
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center
+/- 0.25% Center*
PWD
00011
Note1
0
1
0
Note 1: Default at power-up will be for latched logic inputs to define frequency, as displayed by Bit 3.
* These frequencies with spread enabled are equal to original Intel defined frequency with -0.5% down spread.
I2C is a trademark of Philips Corporation
Third party brands and names are the property of their respective owners.
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