ICS952802 Datasheet, PDF (1/19 Pages) Integrated Circuit Systems – Programmable Timing Control Hu for P4 processor

Integrated
Circuit
Systems, Inc.
ICS952802
Advance Information
Programmable Timing Control Hub™ for P4™ processor
Recommended Application:
SiS755/760 style chipset for AMD K8 Processor
Output Features:
• 2 - Pairs of differential push-pull K8CPU outputs
• 10 - PCICLK @ 3.3V
• 2 - AGPCLK @ 3.3V
• 3 - REF @ 3.3V
• 2 - ZCLK @ 3.3V
• 1 - 24_48MHz @ 3.3V
• 1 - 12_48MHz @ 3.3V
• 1 - PCI_12MHz @ 3.3V
Key Specifications:
• CPU Output Jitter <250ps
• AGP Output Jitter <250ps
Features/Benefits:
• Selectable synchronous/asynchronous AGP/PCI/ZCLK
frequency
• Linear Programmable output frequency.
• Programmable output divider ratios.
• Programmable output rise/fall time.
• Programmable output skew.
• Programmable spread percentage for EMI control.
• Watchdog timer technology and system reset function
• Programmable watch dog safe frequency.
• Support I2C Index read/write and block read/write
operations.
• Uses external 14.318MHz reference input.
Functionality
Bit4 Bit3 Bit2 Bit1 Bit0 CPU ZCLK AGP
FS4 FS3 FS2 FS1 FS0 MHz MHz MHz
0
0
0
0
0 160.00 106.66 53.33
0
0
0
0
1 200.00 133.33 66.67
0
0
0
1
0 200.00 133.33 66.67
0
0
0
1
1 200.00 160.00 66.67
0
0
1
0
0 186.66 106.67 53.33
0
0
1
0
1 233.33 133.33 66.67
0
0
1
1
0 233.33 133.33 66.67
0
0
1
1
1 233.33 155.55 66.67
0
1
0
0
0 213.34 106.66 53.33
0
1
0
0
1 266.67 133.33 66.67
0
1
0
1
0 266.67 133.33 66.67
0
1
0
1
1 266.67 160.00 66.67
0
1
1
0
0 133.34 106.66 53.33
0
1
1
0
1 166.67 133.33 66.67
0
1
1
1
0 166.67 133.33 66.67
0
1
1
1
1 166.67 166.66 66.67
1
0
0
0
0 206.00 137.33 68.67
1
0
0
0
1 210.00 140.00 70.00
1
0
0
1
0 202.00 134.66 67.33
1
0
0
1
1 202.00 161.60 67.33
1
0
1
0
0 240.33 137.33 68.67
1
0
1
0
1 245.00 140.00 70.00
1
0
1
1
0 235.66 134.67 67.33
1
0
1
1
1 235.66 157.11 67.33
1
1
0
0
0 106.66 106.66 53.33
1
1
0
0
1 133.33 133.33 66.67
1
1
0
1
0 133.33 133.33 66.67
1
1
0
1
1 133.33 177.77 66.67
1
1
1
0
0 171.67 137.33 68.67
1
1
1
0
1 175.00 140.00 70.00
1
1
1
1
0 168.34 134.66 67.33
1
1
1
1
1 168.34 168.33 67.33
PCI
MHz
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
26.66
33.33
33.33
33.33
34.33
35.00
33.66
33.66
Pin Configuration
VDDREF 1
48 CPU_STOP#/Reset#*
*FS0/REF0 2
47 GNDCPU
**FS1/REF1 3
46 CPUCLK8T1
**FS2/REF2 4
GNDREF 5
45 CPUCLK8C1
44 VDDCPU
X1 6
43 VDDCPU
X2 7
42 CPUCLK8T0
GNDZ 8
ZCLK0 9
ZCLK1 10
VDDZ 11
*PCI_STOP#/PCICLK8 12
41 CPUCLK8C0
40 GNDCPU
39 AGND
38 AVDD
37 PD#*
**FS3/PCICLK_F0 13
**FS4/PCICLK_F1 14
36 GNDAGP
35 AGPCLK0
VDDPCI 15
GNDPCI 16
PCICLK0 17
PCICLK1 18
PCICLK2 19
PCICLK3 20
PCICLK4 21
PCICLK5 22
34 AGPCLK1
33 VDDAGP
32 SCLK
31 AVDD48
30 12_48MHz/SEL12_48#**
29 24_48MHz/SEL24_48#*~
28 GND48
27 SDATA
GNDPCI 23
26 PCICLK7/12MHz/SELPCI_12#**
VDDPCI 24
25 PCICLK6/SEL_Reset#*
48-SSOP
* Internal Pull-Up Resistor
** Internal Pull-Down Resistor
~ This Output has 1.5X Drive Strength
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.