Integrated
Circuit
Systems, Inc.
ICS952801
Advance Information
Programmable Timing Control Hub™ for K8™ processor
Recommended Application:
SiS755/760 style chipset for AMD K8 Processor
Features/Benefits:
•
•
QuadRomTM frequency selection.
Output Features:
Selectable synchronous/asynchronous AGP/PCI/ZCLK
frequency
•
•
•
•
•
•
•
2 - Pairs of differential push-pull K8CPU outputs
8 - PCICLK @ 3.3V
•
•
•
•
•
•
•
Linear Programmable CPU output frequency.
Linear Programmable AGP/PCI output frequency.
Programmable output divider ratios.
2 - AGPCLK @ 3.3V
3 - REF @ 3.3V
2 - ZCLK @ 3.3V
Programmable output rise/fall time.
1 - 24_48MHz @ 3.3V
1 - 48MHz @ 3.3V
Programmable output skew.
Programmable spread percentage for EMI control.
Key Specifications:
Watchdog timer technology to reset system if system
malfunctions.
•
•
•
•
CPU Output Jitter <250ps
AGP Output Jitter <250ps
ZCLK Output Jitter <250ps
PCI Output Jitter <500ps
•
•
Programmable watch dog safe frequency.
Support I2C Index read/write and block read/write
operations.
•
Uses external 14.318MHz referience input.
Pin Configuration
Functionality
Bit4 Bit3 Bit2 Bit1 Bit0
CPU
MHz
200.00 66.67
200.00 100.00 66.67
200.00 133.33 66.67
200.00 166.67 66.67
233.33 66.67
233.33 93.33
ZCLK
MHz
AGP
MHz
66.67
PCI
MHz
VDDREF 1
**FS0/REF0 2
**FS1/REF1 3
**FS2/REF2 4
GNDREF 5
X1 6
48 CPU_STOP#*
47 GNDCPU
FS4
0
FS3
0
FS2
0
FS1
0
FS0
0
33.33
33.33
33.33
33.33
33.33
33.33
33.33
35.00
33.33
33.33
33.33
33.33
36.66
36.66
36.66
36.66
33.33
33.33
33.33
33.33
33.33
33.33
33.33
33.33
46 CPUCLK8T1
45 CPUCLK8C1
0
0
0
0
1
0
0
0
1
0
VDDCPU
44
0
0
0
1
1
43 VDDCPU
0
0
1
0
0
66.67
66.67
X2 7
42 CPUCLK8T0
41 CPUCLK8C0
0
0
1
0
1
GNDZ 8
0
0
1
1
0
233.33 133.33 66.67
233.33 175.00 70.00
GNDCPU
AGND
ZCLK0 9
40
39
38
37
36
35
34
33
32
31
30
29
28
27
0
0
1
1
1
ZCLK1 10
0
1
0
0
0
266.67 66.67
66.67
AVDD
VDDZ 11
0
1
0
0
1
266.67 106.67 66.67
266.67 133.33 66.67
266.67 160.00 66.67
PD#*
*PCI_STOP# 12
**FS3/PCICLK_F0 13
**FS4/PCICLK_F1 14
VDDPCI 15
GNDPCI 16
PCICLK0 17
PCICLK1 18
PCICLK2 19
PCICLK3 20
PCICLK4 21
PCICLK5 22
GNDPCI 23
VDDPCI 24
0
1
0
1
0
GNDAGP
AGPCLK0
AGPCLK1
VDDAGP
SCLK
0
1
0
1
1
0
1
1
0
0
293.34 73.34
73.33
0
1
1
0
1
293.34 117.34 73.33
293.34 146.66 73.33
293.34 176.00 73.33
0
1
1
1
0
0
1
1
1
1
AVDD48
48MHz
133.33 66.67
66.67
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
133.33 100.00 66.67
133.33 133.33 66.67
133.33 166.67 66.67
24_48MHz/SEL24_48MHz*
GND48
SDATA
66.67
66.67
166.67
166.67
166.67
166.67
100.00 66.67
133.33 66.67
166.67 66.67
26 PCICLK7
25 PCICLK6
48-SSOP
202.00 67.34
67.33
33.66
33.66
33.66
33.66
36.66
36.66
36.66
36.66
* Internal Pull-Up Resistor
202.00 101.00 67.33
202.00 134.66 67.33
202.00 168.34 67.33
** Internal Pull-Down Resistor
220.00 73.34
73.33
220.00 110.00 73.33
220.00 146.66 73.33
220.00 183.34 73.33
1
1
1
1
1
1
1
1
0
1
0719—01/22/03
ADVANCE INFORMATION documents contain information on products in the formative or design phase development. Characteristic data and other specifications are design goals.
ICS reserves the right to change or discontinue these products without notice. Third party brands and names are the property of their respective owners.