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ICS94203 Datasheet(PDF) 10 Page - Integrated Circuit Systems

Part # ICS94203
Description  Programmable System Frequency Generator for PII/III?
PDF  18 Pages
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Manufacturer  ICST [Integrated Circuit Systems]
Direct Link  http://www.icst.com
Logo ICST - Integrated Circuit Systems

ICS94203 Datasheet(HTML) 10 Page - Integrated Circuit Systems

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10
ICS94203
Byte 21: ICS Reserved Register
Notes:
1. PWD = Power on Default
Byte 22: Output Rise/Fall Time Select Register
Byte 20: Output Dividers Control Register
Note: Changing bits in these registers results in
frequency divider ratio changes. Incorrect
configuration of group gear ratio can cause
system malfunction.
Notes:
1. PWD = Power on Default
2. The power on default for byte 16-20 depends on the harware
(latch inputs FS[0:4]) or I
2C (Byte 0 bit [1:7]) setting. Be sure
to read back and re-write the values of these 5 registers when
VCO frequency change is desired for the first pass.
3. If Byte 8 bit 7 is driven to "1" meaning programming is
intended, Byte 21-22 will lose their default power up value.
Note: Each increment or decrement of bit 4 to 7 will introduce
100ps delay or advance on all of the above clocks.
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