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ICS94225 Datasheet(PDF) 5 Page - Integrated Circuit Systems

Part No. ICS94225
Description  AMD-K7TM System Clock Chip
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Maker  ICST [Integrated Circuit Systems]
Homepage  http://www.icst.com
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ICS94225 Datasheet(HTML) 5 Page - Integrated Circuit Systems

 
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5
ICS94225
0445B—08/01/03
Byte 7: Vendor ID and Revision ID Register
Byte 8: Byte Count and Read Back Register
Notes:
1. PWD = Power on Default
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Byte 11: VCO Frequency Control Register
Note: The decimal representation of these 7 bits (Byte 11
[6:0]) + 2 is equal to the REF divider value .
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Byte 12: VCO Frequency Control Register
Note: The decimal representation of these 9 bits (Byte
12 bit [7:0] & Byte 11 bit [7] ) + 8 is equal to the VCO
divider value. For example if VCO divider value of 36
is desired, user need to program 36 - 8 = 28, namely, 0,
00011100 into byte 12 bit & byte 11 bit 7.
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Note: FS values in bit [0:4] will correspond to Byte 0 FS
values. Default safe frequency is same as 00000
entry in byte0.
Byte 10: VCO Control Selection Bit &
Watchdog Timer Control Register
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Byte 9: Watchdog Timer Count Register
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