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ICS952702YFLF-T Datasheet

  • ICS952702YFLF-T

  • Programmable Timing Control Hub for K7 System

  • 17頁(yè)

  • ICS

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Integrated
Circuit
Systems, Inc.
ICS952702
Programmable Timing Control Hub for K7
TM
System
Recommended Application:
SiS746/746FX style chipset
Output Features:
鈥?/div>
1 - Pair of differential open drain CPU outputs
鈥?/div>
1 - Single-ended open drain CPU output
鈥?/div>
8 - PCICLK @ 3.3V including 2 PCI clock free running
鈥?/div>
2 - AGPCLK @ 3.3V
鈥?/div>
3 - REF @ 3.3V
鈥?/div>
2 - ZCLK @ 3.3V
鈥?/div>
2 - IOAPIC @ 2.5V
鈥?/div>
1 - 12_48MHz @ 3.3V
鈥?/div>
1 - 24_48MHz @ 3.3V
Key Specifications:
鈥?/div>
CPU Output Jitter <250ps
鈥?/div>
AGP Output Jitter <250ps
鈥?/div>
ZCLK Output Jitter <250ps
鈥?/div>
PCI Output Jitter <500ps
鈥?/div>
CPU-AGP/PCI/ZCLK skew: 2.5ns~3.5ns
Pin Configuration
VDDREF 1
**FS0/REF0 2
**FS1/REF1 3
**FS4/REF2 4
GNDREF 5
X1 6
X2 7
GNDZ 8
ZCLK0 9
ZCLK1 10
VDDZ 11
*PCI_STOP# 12
VDDPCI 13
**FS2/PCICLK_F0 14
*FS3/PCICLK_F1 15
PCICLK0 16
PCICLK1 17
GNDPCI 18
VDDPCI 19
PCICLK2 20
PCICLK3 21
PCICLK4 22
PCICLK5 23
GNDPCI 24
48 VDDLAPIC
47 IOAPIC1
46 IOAPIC0
45 GNDAPIC
44 CPU_STOP#*
43 CPUCLKODT1
42 RESET#
41 GNDCPU
40 CPUCLKODT0
39 CPUCLKODC0
38 VDDCPU
37 AGND
36 AVDD
35 SCLK
34 SDATA
33 PD#*
32 GNDAGP
31 AGPCLK0
30 AGPCLK1
29 VDDAGP
28 AVDD48
27 12_48MHz/SEL12#_48MHz*
26 24_48MHz/SEL24#_48MHz**
25 GND48
Features/Benefits:
鈥?/div>
Selectable synchronous/asynchronous AGP/PCI
frequency
鈥?/div>
Programmable output frequency.
鈥?/div>
Programmable output divider ratios.
鈥?/div>
Programmable output rise/fall time.
鈥?/div>
Programmable output skew.
鈥?/div>
Programmable spread percentage for EMI control.
鈥?/div>
Watchdog timer technology to reset system
if system malfunctions.
鈥?/div>
Programmable watch dog safe frequency.
鈥?/div>
Support I2C Index read/write and block read/write
operations.
鈥?/div>
Uses external 14.318MHz reference or XTAL input.
Functionality
Bit4
FS4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Bit3
FS3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Bit2
FS2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Bit1
FS1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Bit0
FS0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
CPU
MHz
200.00
200.99
200.00
206.00
133.33
214.00
218.00
222.00
100.00
100.99
100.00
103.00
100.00
107.00
109.00
111.00
166.67
166.99
166.67
171.67
175.00
178.34
181.67
185.00
133.33
133.99
133.33
137.33
140.00
142.66
145.33
148.00
ZCLK
MHz
133.33
133.99
66.67
137.33
133.33
142.66
145.33
148.00
133.33
134.65
66.67
137.33
133.33
142.66
145.33
148.00
133.33
133.59
66.67
137.33
140.00
142.66
145.33
148.00
133.33
133.99
66.67
137.33
140.00
142.66
145.33
148.00
AGP
MHz
66.67
67.00
66.67
68.67
66.67
71.33
72.67
74.00
66.67
67.33
66.67
68.67
66.67
71.33
72.67
74.00
66.67
66.80
66.67
68.67
70.00
71.33
72.67
74.00
66.67
67.00
66.67
68.67
70.00
71.33
72.67
74.00
PCI
MHz
33.33
33.50
33.33
34.33
33.33
35.67
36.33
37.00
33.33
33.66
33.33
34.33
33.33
35.67
36.33
37.00
33.33
33.40
33.33
34.33
35.00
35.67
36.33
37.00
33.33
33.50
33.33
34.33
35.00
35.67
36.33
37.00
48-SSOP
* Internal Pull-Up Resistor
** Internal Pull-Down Resistor
0795D鈥?5/06/05
ICS952702

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