ICS9248F-112-T View Datasheet(PDF) - Integrated Circuit Systems
Part Name
Description
MFG CO.
ICS9248F-112-T
Integrated Circuit Systems
'ICS9248F-112-T' PDF : 12 Pages View PDF
ICS9248-112
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
XXX
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.
4
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