Integrated
Circuit
Systems, Inc.
ICS952802
Advance Information
Programmable Timing Control Hub™ for P4™ processor
Recommended Application:
Features/Benefits:
SiS755/760 style chipset for AMD K8 Processor
•
Selectable synchronous/asynchronous AGP/PCI/ZCLK
frequency
Output Features:
•
•
•
•
•
•
•
•
Linear Programmable output frequency.
Programmable output divider ratios.
•
•
•
•
•
•
•
•
2 - Pairs of differential push-pull K8CPU outputs
10 - PCICLK @ 3.3V
Programmable output rise/fall time.
2 - AGPCLK @ 3.3V
Programmable output skew.
3 - REF @ 3.3V
Programmable spread percentage for EMI control.
Watchdog timer technology and system reset function
Programmable watch dog safe frequency.
2 - ZCLK @ 3.3V
1 - 24_48MHz @ 3.3V
1 - 12_48MHz @ 3.3V
1 - PCI_12MHz @ 3.3V
Support I2C Index read/write and block read/write
operations.
•
Uses external 14.318MHz reference input.
Key Specifications:
•
•
CPU Output Jitter <250ps
AGP Output Jitter <250ps
Functionality
Pin Configuration
Bit4 Bit3 Bit2 Bit1 Bit0
CPU
MHz
ZCLK
MHz
AGP
MHz
PCI
VDDREF 1
*FS0/REF0 2
**FS1/REF1 3
**FS2/REF2 4
GNDREF 5
48 CPU_STOP#/Reset#*
47 GNDCPU
FS4
0
FS3
0
FS2
0
FS1
0
FS0
0
MHz
160.00 106.66 53.33
200.00 133.33 66.67
200.00 133.33 66.67
200.00 160.00 66.67
186.66 106.67 53.33
233.33 133.33 66.67
233.33 133.33 66.67
233.33 155.55 66.67
213.34 106.66 53.33
266.67 133.33 66.67
266.67 133.33 66.67
266.67 160.00 66.67
133.34 106.66 53.33
166.67 133.33 66.67
166.67 133.33 66.67
166.67 166.66 66.67
206.00 137.33 68.67
210.00 140.00 70.00
202.00 134.66 67.33
202.00 161.60 67.33
26.66
33.33
33.33
33.33
26.66
33.33
33.33
33.33
26.66
33.33
33.33
33.33
26.66
33.33
33.33
33.33
34.33
35.00
33.66
33.66
34.33
35.00
33.66
33.66
46 CPUCLK8T1
45 CPUCLK8C1
0
0
0
0
1
0
0
0
1
0
VDDCPU
44
0
0
0
1
1
X1 6
43 VDDCPU
0
0
1
0
0
X2 7
42 CPUCLK8T0
41 CPUCLK8C0
0
0
1
0
1
GNDZ 8
0
0
1
1
0
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
AVDD
VDDZ 11
0
1
0
0
1
PD#*
*PCI_STOP#/PCICLK8 12
**FS3/PCICLK_F0 13
**FS4/PCICLK_F1 14
VDDPCI 15
0
1
0
1
0
GNDAGP
AGPCLK0
AGPCLK1
VDDAGP
0
1
0
1
1
0
1
1
0
0
0
1
1
0
1
GNDPCI 16
PCICLK0 17
PCICLK1 18
PCICLK2 19
PCICLK3 20
PCICLK4 21
PCICLK5 22
GNDPCI 23
VDDPCI 24
0
1
1
1
0
SCLK
0
1
1
1
1
AVDD48
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
12_48MHz/SEL12_48#**
24_48MHz/SEL24_48#*~
GND48
SDATA
137.33 68.67
140.00 70.00
134.67 67.33
157.11 67.33
240.33
245.00
235.66
235.66
26 PCICLK7/12MHz/SELPCI_12#**
25 PCICLK6/SEL_Reset#*
48-SSOP
* Internal Pull-Up Resistor
106.66 106.66 53.33
133.33 133.33 66.67
133.33 133.33 66.67
133.33 177.77 66.67
171.67 137.33 68.67
175.00 140.00 70.00
168.34 134.66 67.33
168.34 168.33 67.33
26.66
33.33
33.33
33.33
34.33
35.00
33.66
33.66
** Internal Pull-Down Resistor
~ This Output has 1.5X Drive Strength
1
1
1
1
1
1
1
1
0
1
0731—09/18/02
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.