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參數(shù)資料
| 型號： | 952703BF |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | 217.9 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| 封裝： | GREEN, MO-118, SSOP-48 |
| 文件頁數(shù)： | 1/19頁 |
| 文件大?。?/td> | 264K |
| 代理商： | 952703BF |
Integrated
Circuit
Systems, Inc.
ICS952703
Preliminary Product Preview
0813B—05/17/05
Pin Configuration
VDDREF 1
48 VDDLAPIC
**FS0/REF0 2
47 IOAPIC1
**FS1/REF1 3
46 IOAPIC0
**Mode/REF2 4
45 GNDAPIC
GNDREF 5
44 VDDSRC
X1 6
43 SRCCLKT
X2 7
42 SRCCLKC
GNDZ 8
41 GND
ZCLK0 9
40 CPUCLKODT1
ZCLK1 10
39 GNDCPU
VDDZ 11
38 CPUCLKODT0
SCLK 12
37 CPUCLKODC0
VDDPCI 13
36 AVDD
*FS2/PCICLK_F0 14
35 AGND
*FS3/PCICLK_F1 15
34 IREF
PCICLK0 16
33 SDATA
PCICLK1 17
32 GNDAGP
GNDPCI 18
31 AGPCLK0
VDDPCI 19
30 AGPCLK1
PCICLK2 20
29 VDDAGP
*(PCI_STOP#)PCICLK3 21
28 AVDD48
*(CPU_STOP#)PCICLK4 22
27 12_48MHz/SEL12_48#MHz*
*(PD#)PCICLK5 23
26 24_48MHz/SEL24_48#MHz**~
GNDPCI 24
25 GND48
48-SSOP
* Internal Pull-Up Resistor
** Internal Pull-Down Resistor
~ This output have 1.5X Drive Strength
IC
S
952703
Recommended Application:
SiS741 style chipset with 964 South Bridge.
Output Features:
1 - Pair of differential open drain CPU outputs
1 - Single-ended open drain CPU output
1 - Pair of current mode differential serial reference clock
8 - PCICLK @ 3.3V including 2 PCI clock free running
2 - AGPCLK @ 3.3V
3 - REF @ 3.3V
2 - ZCLK @ 3.3V
2 - IOAPIC @ 2.5V
1 - 12_48MHz @ 3.3V
1 - 24_48MHz @ 3.3V
Key Specifications:
CPU Output Jitter <250ps
AGP Output Jitter <250ps
ZCLK Output Jitter <250ps
PCI Output Jitter <500ps
CPU-AGP/PCI/ZCLK skew: 2.5ns~3.5ns
Programmable Timing Control Hub for K7TM System
Functionality
Features/Benefits:
Selectable synchronous/asynchronous AGP/PCI
frequency
Programmable output frequency.
Programmable output divider ratios.
Programmable output rise/fall time.
Programmable output skew.
Programmable spread percentage for EMI control.
Watchdog timer technology to reset system
if system malfunctions.
Programmable watch dog safe frequency.
Support I2C Index read/write and block read/write
operations.
Uses external 14.318MHz reference input.
Bit3
Bit2
Bit1
Bit0
CPU
SRC
ZCLK
AGP
PCI
FS3
FS2
FS1
FS0
MHz
0
200.00
100.00
133.33
66.66
33.33
0
1
200.01
100.00
133.34
66.67
33.33
0
1
0
200.97
100.00
133.98
66.99
33.49
0
1
190.11
100.00
126.74
63.37
31.69
0
1
0
100.00
133.33
66.66
33.33
0
1
0
1
100.00
133.34
66.67
33.33
0
1
0
100.99
100.00
134.66
67.33
33.66
0
1
95.00
100.00
126.66
63.33
31.67
0
1
0
166.66
100.00
133.33
66.66
33.33
0
1
0
1
166.65
100.00
133.32
66.66
33.33
0
1
0
1
0
161.59
100.00
129.27
64.64
32.32
0
1
0
1
151.97
100.00
121.57
60.79
30.39
0
1
0
133.33
100.00
133.33
66.66
33.33
0
1
0
1
133.34
100.00
133.34
66.67
33.33
0
1
0
133.98
100.00
133.98
66.99
33.49
0
1
126.66
100.00
126.66
63.33
31.67
1
0
206.02
100.00
137.35
68.67
34.34
1
0
1
210.00
100.00
140.00
70.00
35.00
1
0
1
0
214.06
100.00
142.70
71.35
35.68
1
0
1
217.90
100.00
145.27
72.63
36.32
1
0
1
0
103.01
100.00
137.35
68.67
34.34
1
0
1
0
1
105.00
100.00
140.00
70.00
35.00
1
0
1
0
106.99
100.00
142.65
71.33
35.66
1
0
1
109.01
100.00
145.35
72.68
36.34
1
0
164.66
100.00
131.73
65.86
32.93
1
0
1
167.91
100.00
134.33
67.17
33.58
1
0
1
0
171.22
100.00
136.98
68.49
34.24
1
0
1
174.38
100.00
139.50
69.75
34.88
1
0
137.32
100.00
137.32
68.66
34.33
1
0
1
140.00
100.00
140.00
70.00
35.00
1
0
142.67
100.00
142.67
71.34
35.67
1
145.33
100.00
145.33
72.66
36.33
Bit4
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