参数资料
型号: ICS951702YGLF-T
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 时钟产生/分配
英文描述: 146.66 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO56
封装: 6.10 MM, 0.50 MM PITCH, MO-153, TSSOP-56
文件页数: 1/12页
文件大小: 159K
代理商: ICS951702YGLF-T
Integrated
Circuit
Systems, Inc.
ICS951702
Advance Information
0664—07/29/02
Block Diagram
Functionality
Pin Configuration
56-Pin 240 mil TSSOP
Recommended Application:
1644 and 1644T applications using DDR
Output Features:
7 - Differential pairs DDR SDRAM clocks
3 - CPU @ 2.5V (1 - Free running)
8 - PCI @ 3.3V (1 - Free running and 1 - 2 X optional)
2 - AGP @ 3.3V
1 - IOAPIC @ 2.5V
1 - 48MHz, @3.3V
1 - REF @ 3.3V
Features:
Up to 147MHz frequency support
Power management through PD#
Spread spectrum for EMI control (0 to -0.5% down
spread, ± 0.25% center spread).
Uses external 14.318MHz crystal
Skew Specifications:
CPU - CPU: <250ps
PCI - PCI: <500ps
SDRAM - SDRAM: <250ps
AGP - AGP: <250ps
PCI - AGP: <750ps
CPU - SDRAM: <750ps
CPU - PCI: <3ns
PIII System Clock Chip for DDR SDRAM
Notes:
* Internal Pull-up Resistor of 120K to VDD
** Internal Pull-down of 120K to GND
1. PCICLK6 is selectable 2X via I
2C
Note:
PCICLK = 33.33MHz
AGP = 66.66MHz
FS3
FS2
FS1
FS0
CPU
SDRAM
0
66.66
0
1
66.66
100.00
0
1
0
100.00
66.66
0
1
100.00
0
1
0
100.00
133.33
0
1
0
1
133.33
66.66
0
1
0
133.33
100.00
0
1
133.33
1
0
66.66
1
0
1
66.66
100.00
1
0
1
0
100.00
66.66
1
0
1
100.00
1
0
100.00
133.33
1
0
1
133.33
66.66
1
0
133.33
100.00
1
133.33
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.
VDDL
IOAPIC
GND
X1
X2
AVDD
FS0/REF
VDD
PCICLK0
PCICLK1
PCICLK2
GND
VDD
**
**FS1/AGP0
AGP1
GND
**FS2/PCI_F
PCICLK3
PCICLK4
PCICLK5
GND
VDD
PCICLK6
*PCI_STOP#
*CPU_STOP#
*Vtt_PWRGD/PD#
VDD
**FS3/48MHz
1
VDDL
CPUCLK_F
CPUCLK0
CPUCLK1
GND
DDRT0
DDRC0
GND
VDDL
SCLK
SDATA
GND
DDRT1
DDRC1
DDRT2
DDRC2
VDDL
GND
DDRT3
DDRC3
DDRT4
DDRC4
GND
VDDL
DDRT5
DDRC5
DDRT6
DDRC6
ICS951702
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
Vtt_PWRGD/PD#
MODE
SDATA
SCLK
FS (3:0)
PLL2
PLL1
Spread
Spectrum
48MHz
CPUCLK (1:0)
IOAPIC
AGP (1:0)
2
X1
X2
XTAL
OSC
CPU
DIVDER
AGP
DIVDER
REF0
Control
Logic
Config.
Reg.
SDRAM
DIVDER
DDRC (6:0)
DDRT (6:0)
7
PCICLK (6:0)
5
PCICLK_F
PCI
DIVDER
Stop
CPUCLK_F
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