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参数资料
| 型号： | ICS950812YFT |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 200 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO56 |
| 封装： | 0.300 INCH, MO-118, SSOP-56 |
| 文件页数： | 1/29页 |
| 文件大小： | 253K |
| 代理商： | ICS950812YFT |
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Integrated
Circuit
Systems, Inc.
ICS950812
0542H—04/08/05
Block Diagram
Recommended Application:
CK-408 clock with Buffered/Unbuffered mode supporting
Almador, Brookdale, ODEM, and Montara-G chipsets with
PIII/P4 processor. Programmable for group to group skew.
Output Features:
3 Differential CPU Clock Pairs @ 3.3V
7 PCI (3.3V) @ 33.3MHz including 2 early PCI clocks
3 PCI_F (3.3V) @ 33.3MHz
1 USB (3.3V) @ 48MHz, 1 DOT (3.3V) @ 48MHz
1 REF (3.3V) @ 14.318MHz
5 3V66 (3.3V) @ 66.6MHz
1 VCH/3V66 (3.3V) @ 48MHz or 66.6MHz
3 66MHz_OUT/3V66 (3.3V) @ 66.6MHz_IN or 66.6MHz
Features:
Provides standard frequencies and additional 5%
and 10% over-clocked frequencies
Supports spread spectrum modulation:
No spread, Center Spread (±0.35%, ±0.5%,
or ±0.75%), or Down Spread (-0.5%, -1.0%, or -1.5%)
Offers adjustable PCI early clock via latch inputs
Selectable 1X or 2X strength for REF via I
2C interface
Efficient power management scheme through PD#,
CPU_STOP# and PCI_STOP#.
Uses external 14.318MHz crystal
Stop clocks and functional control available through
I
2C interface.
Key Specifications:
CPU Output Jitter <150ps
3V66 Output Jitter <250ps
66MHz Output Jitter (Additive) (Buffered Mode) <100ps
CPU Output Skew <100ps
Pin Configuration
Frequency Generator with 200MHz Differential CPU Clocks
Frequency Select
Note:
Almador board level designs MUST use pin 22,
66MHZ_OUT1, as the feedback connection from the
clock buffer path to the Almador (GMCH) chipset.
66MHz_OU
T (2:0)
66MHz_IN
PCICLK_F
3V66 (4:2)
3V66_5
PCICLK
FS2 FS1 FS0
MHz
0
66.66
33.33
0
1
100.00
66.66
33.33
0
1
0
200.00
66.66
33.33
0
1
133.33
66.66
33.33
1
0
66.66
66MHz_IN
Input
66MHz_IN/2
1
0
1
100.00
66.66
66MHz_IN
Input
66MHz_IN/2
1
0
200.00
66.66
66MHz_IN
Input
66MHz_IN/2
1
133.33
66.66
66MHz_IN
Input
66MHz_IN/2
CPUCLK
3V66
Bit
PLL2
PLL1
Spread
Spectrum
3V66_5/66MHz_IN
3V66_3/66MHz_OUT1
3V66_(4,2)/66MHz_OUT(2,0)
48MHz_USB
48MHz_DOT
X1
X2
XTAL
OSC
3V66
DIVDER
PD#
CPU_STOP#
PCI_STOP#
MULTSEL
SDATA
SCLK
FS (5:0)
I REF
Control
Logic
Config.
Reg.
REF
3V66_0
CPU
DIVDER
3
CPUCLKT (2:0)
CPUCLKC (2:0)
Stop
3V66_1/VCH_CLK
PCICLK (6:4, 2, 0)
PCI
DIVDER
3
7
PCICLK_F (2:0)
Stop
E_PCICLK(1,3)/PCICLK(1,3)
2
VTT_PWRGD#
VDDREF
1
56 REF
X1
2
55 FS1
X2
3
54 FS0
GND
4
53 CPU_STOP#*
PCICLK_F0
5
52 CPUCLKT0
PCICLK_F1
651 CPUCLKC0
PCICLK_F2
7
50 VDDCPU
VDDPCI
8
49 CPUCLKT1
GND
9
48 CPUCLKC1
PCICLK0 10
47 GND
**E_PCICLK1/PCICLK1 11
46 VDDCPU
PCICLK2 12
45 CPUCLKT2
**E_PCICLK3/PCICLK3 13
44 CPUCLKC2
VDDPCI 14
43 MULTSEL*
GND 15
42 IREF
PCICLK4 16
41 GND
PCICLK5 17
40 FS2
PCICLK6 18
39 48MHz_USB/FS3**
VDD3V66 19
38 48MHz_DOT
GND 20
37 VDD48
66MHZ_OUT0/3V66_2 21
36 GND
66MHZ_OUT1/3V66_3 22
35 3V66_1/VCH_CLK/FS4**
66MHZ_OUT2/3V66_4 23
34 PCI_STOP#*
66MHZ_IN/3V66_5 24
33 3V66_0/FS5**
*PD# 25
32 VDD3V66
VDDA 26
31 GND
GND 27
30 SCLK
Vtt_PWRGD# 28
29 SDATA
56-Pin 300mil SSOP
6.10 mm. Body, 0.50 mm. pitch TSSOP
*These inputs have 120K internal pull-up resistors to VDD.
**Internal pull-down resistors to ground.
IC
S950812
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS950812YGLFT | 制造商:ICS 制造商全称:ICS 功能描述:Frequency Generator with 200MHz Differential CPU Clocks |
| ICS950813 | 制造商:ICS 制造商全称:ICS 功能描述:Frequency Generator with 200MHz Differential CPU Clocks |
| ICS950813YFT | 制造商:ICS 制造商全称:ICS 功能描述:Frequency Generator with 200MHz Differential CPU Clocks |
| ICS950813YGT | 制造商:ICS 制造商全称:ICS 功能描述:Frequency Generator with 200MHz Differential CPU Clocks |
| ICS950818 | 制造商:ICS 制造商全称:ICS 功能描述:Frequency Generator with 200MHz Differential CPU Clocks |
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