ICS950405 Datasheet, PDF (4/16 Pages) Integrated Circuit Systems – AMD - K8 System Clock Chip

ICS950405
Power Groups
Pin Number
VDD
GND
2
5
9
10
16,19
15,20
29
27,30,33
35,38
34,39
43
42
46
47
Description
Xtal, POR
PCICLK, HTTCLK O/p
PCICLK Outputs
48 MHz, Fix Analog
CPU Outputs
Analog, CPU PLL, MCLK
REF, Digital Core
Mode Functionality Tables
ModeA
ModeB
Pin7
Pin8
0
0
HTTCLK1 HTTCLK2
0
1
HTTCLK1 HTTCLK2
1
0
PCICLK8 PCICLK9
1
1
HTTCLK1 PCICLK9
Pin11
PCICLK11
HTTCLK3
PCICLK11
PCICLK11
Table1: Frequency Selection Table
Bit3 Bit2 Bit1 Bit0 ^CPU
HTT
FS3 FS2 FS1 FS0 MHz MHz
0
0
0
0 100.90 67.27
0
0
0
1 133.90 66.95
0
0
1
0 168.00 67.20
0
0
1
1 202.00 67.33
0
1
0
0 100.20 66.80
0
1
0
1 133.50 66.75
0
1
1
0 _{166.70 66.68}
0
1
1
1 200.40 66.80
1
0
0
0 150.00 60.00
1
0
0
1 180.00 60.00
1
0
1
0 210.00 70.00
1
0
1
1 240.00 60.00
1
1
0
0 270.00 67.50
1
1
0
1 233.33 66.67
1
1
1
0 266.67 66.67
1
1
1
1 _{300.00 75.00}
PCI
MHz
33.63
33.48
33.60
33.67
33.40
33.38
33.34
33.40
30.00
30.00
35.00
30.00
33.75
33.33
33.33
37.50
0802F—04/22/05
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