參數資料
型號: CY2283
廠商: Cypress Semiconductor Corp.
英文描述: PentiumII, K6, 6x86 100-MHz Clock Synthesizer/Driver for Desktop PCs with ALI or VIA Chipsets, AGP and 3 DIMMs(帶ALI或VIA芯片組,AGP和3DIMM應用于桌上型PC機的奔II,K6, 6x86 100MHz時鐘合成器/驅動器)
中文描述: PentiumII,K6,6x86 100 MHz的時鐘合成器/驅動器與阿里或威盛芯片組,AGP和3個DIMM(帶急性肺損傷或威盛芯片組,AGP接口和3DIMM應用于桌上型電腦機的奔二,K6,6x86桌面電腦100MHz的時鐘合成器/驅動器)
文件頁數: 2/12頁
文件大?。?/td> 218K
代理商: CY2283
CY2283
PRELIMINARY
2
Pin Summary
Name
V
DDQ3
V
DDCPU
AV
DD
V
SS
Pins
6, 14, 19, 30, 36, 48
Description
3.3V Digital voltage supply
42
1
CPU Digital voltage supply, 2.5V or 3.3V
Analog voltage supply, 3.3V
3, 9, 16, 22, 27, 33,
39, 45
4
Ground
XTALIN
[3]
XTALOUT
[3]
Reference crystal input
5
Reference crystal feedback
SDRAM7/ PCI_STOP
28
SDRAM clock output. Also, active LOW control input to stop PCI clocks, enabled
when MODE is LOW.
SDRAM6/CPU_STOP
29
SDRAM clock output. Also, active LOW control input to stop CPU clocks, enabled
when MODE is LOW.
SDRAM clock output. Also, active LOW control input to power down device,
enabled when MODE is LOW.
SDRAM5/ PWR_DWN
31
SDRAM[0:4],[8:11]
38, 37, 35, 34, 32,
21, 20, 18, 17
SDRAM clock outputs
SEL0
26
CPU frequency select input, bit 0 (see table below)
SEL1
CPUCLK[0:3]
46
44, 43, 41, 40
CPU frequency select input, bit 0 (see table below)
CPU clock outputs
PCICLK[0:3]
8, 10, 11, 12
PCI clock outputs, at one-half the CPU frequency.
PCICLK_F
AGP[0:1]
7
13, 15
Free-running PCI clock output
AGP clock outputs
REF0
2
3.3V Reference clock output
USBCLK
SDATA
47
23
USB Clock output
Serial data input for serial configuration port
SCLK
24
Serial clock input for serial configuration port
MODE
25
Mode Select pin for enabling power management features
Note:
3.
For best accuracy, use a parallel-resonant crystal, C
LOAD
= 18 pF.
Function Table
SEL1
0
SEL0
0
CPU/PCI
Ratio
2.5
CPUCLK[0:3]
SDRAM[0:11]
83.33 MHz
PCICLK[0:3]
PCICLK_F
33.33 MHz
AGP[0:1]
66.66 MHz
REF0
USBCLK
48 MHz
14.318 MHz
0
1
2
66.67 MHz
33.33 MHz
66.66 MHz
14.318 MHz
48 MHz
1
0
3.0
100.0 MHz
33.33 MHz
66.66 MHz
14.318 MHz
48 MHz
1
1
2.5
75.0 MHz
30.0 MHz
60.0 MHz
14.318 MHz
48 MHz
相關PDF資料
PDF描述
CY2285 100-MHz PentiumII Clock Synthesizer/Driver with Spread Spectrum for Mobile PCs(應用于移動PC機并帶有寬頻譜的100MHz奔騰II時鐘合成器/驅動器)
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參數描述
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