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參數(shù)資料
| 型號(hào)： | CY2276A-12 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | PentiumII Clock Synthesizer/Driver for Desktop PCs with Intel 82440LX and 4 DIMMs(帶英特爾82440LX 和4個(gè)DIMM的應(yīng)用于桌上型PC機(jī)的奔騰II時(shí)鐘合成器/驅(qū)動(dòng)器) |
| 中文描述： | PentiumII時(shí)鐘合成器/與英特爾82440LX和4個(gè)DIMM臺(tái)式機(jī)驅(qū)動(dòng)器（帶英特爾82440LX和4個(gè)DIMM內(nèi)存的應(yīng)用于桌上型電腦機(jī)的奔騰二時(shí)鐘合成器/驅(qū)動(dòng)器） |
| 文件頁(yè)數(shù)： | 2/11頁(yè) |
| 文件大?。?/td> | 164K |
| 代理商： | CY2276A-12 |
CY2276A-12
CY2276A-13
2
CPU and PCI Clock Driver Strengths
Matched impedances on both rising and falling edges on
the output drivers
Output impedance: 25
(typical) measured at 1.5V.
Pin Summary
Name
V
DDQ3
V
DDQ2
V
DDCPU
AV
DD
V
SS
XTALIN
[2]
XTALOUT
[2]
Pins
7, 15, 20, 26, 37, 43
Description
3.3V Digital voltage supply
56
IOAPIC Digital voltage supply, 2.5V
50
CPU Digital voltage supply, 2.5V
1
Analog voltage supply, 3.3V
4, 10, 17, 23, 31, 34, 40, 47, 53
Ground
5
Reference crystal input
6
Reference crystal feedback
SDRAM[0–15]
45, 44, 42, 41, 39, 38, 36, 35, 22,
21, 19, 18, 33, 32, 25, 24
SDRAM clock outputs
OE
30
Active HIGH Output Enable (see table below)
CPUCLK[0–4]
52, 51, 49, 48, 46
CPU clock outputs
PCICLK[0–5]
9, 11, 12, 13, 14, 16
PCI clock outputs, running at one-half the CPU frequency
PCICLK_F
8
Free-running PCI clock output
IOAPIC[0–2]
55, 54, 2
IOAPIC clock outputs
REF0
3
Reference clock outputs, 14.318 MHz, drives 45 pF load
SDATA
27
Serial data input for serial configuration port
SCLK
28
Serial clock input for serial configuration port
MODE
29
Mode input, not used on this configuration, tie to V
SS
Note:
2.
For best accuracy, use a parallel-resonant crystal, C
LOAD
= 18 pF.
Function Table
OE
XTALIN
14.318 MHz
CPUCLK[0–4]
SDRAM[0–15]
Hi-Z
PCICLK[0–5]
PCICLK_F
Hi-Z
REF0
IOAPIC[0–2]
Hi-Z
0
1
14.318 MHz
66.67 MHz
33.33 MHz
14.318 MHz
Actual Clock Frequency Values
Clock Output
CPUCLK
Target
Frequency
(MHz)
66.67
Actual
Frequency
(MHz)
66.654
PPM
–195
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CY2276A-13 | PentiumII Clock Synthesizer/Driver for Desktop PCs with Intel 82440LX and 4 DIMMs(帶英特爾82440LX 和4個(gè)DIMM的應(yīng)用于桌上型PC機(jī)的奔騰II時(shí)鐘合成器/驅(qū)動(dòng)器) |
| CY2276A-21 | PentiumII Clock Synthesizer/Driver for Desktop PCs with Intel 82440LX and 3SO- DIMMs(帶英特爾82440LX 和3SO-DIMM的應(yīng)用于桌上型PC機(jī)的奔騰II時(shí)鐘合成器/驅(qū)動(dòng)器) |
| CY2276A-31 | PentiumII Clock Synthesizer/Driver for Desktop PCs with Intel 82440LX and 3SO- DIMMs(帶英特爾82440LX 和3SO-DIMM的應(yīng)用于桌上型PC機(jī)的奔騰II時(shí)鐘合成器/驅(qū)動(dòng)器) |
| CY2278A | PentiumII Clock Synthesizer/Driver for Mobile PCs with Intel 82430TX and No SDRAM(帶英特爾82430TX和2個(gè)DIMM 或3個(gè)SO-DIMM 的應(yīng)用于移動(dòng)PC機(jī)的奔騰II6x86, K6 時(shí)鐘合成器/驅(qū)動(dòng)器) |
| CY22800-082A | Universal Programmable Clock Generator (UPCG) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY2276APVC-13 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator |
| CY2276PVC-1 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator |
| CY2276PVC-2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator |
| CY2276PVC-3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator |
| CY2276PVC-4 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator |
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