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參數(shù)資料
| 型號： | CY2276A-13 |
| 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DIMM的應用于桌上型PC機的奔騰II時鐘合成器/驅動器) |
| 中文描述： | PentiumII時鐘合成器/與英特爾82440LX和4個DIMM臺式機驅動器（帶英特爾82440LX和4個DIMM內存的應用于桌上型電腦機的奔騰二時鐘合成器/驅動器） |
| 文件頁數(shù)： | 2/11頁 |
| 文件大?。?/td> | 164K |
| 代理商： | CY2276A-13 |
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PDF資料 |
PDF描述 |
|---|---|
| CY2276A-21 | PentiumII Clock Synthesizer/Driver for Desktop PCs with Intel 82440LX and 3SO- DIMMs(帶英特爾82440LX 和3SO-DIMM的應用于桌上型PC機的奔騰II時鐘合成器/驅動器) |
| CY2276A-31 | PentiumII Clock Synthesizer/Driver for Desktop PCs with Intel 82440LX and 3SO- DIMMs(帶英特爾82440LX 和3SO-DIMM的應用于桌上型PC機的奔騰II時鐘合成器/驅動器) |
| CY2278A | PentiumII Clock Synthesizer/Driver for Mobile PCs with Intel 82430TX and No SDRAM(帶英特爾82430TX和2個DIMM 或3個SO-DIMM 的應用于移動PC機的奔騰II6x86, K6 時鐘合成器/驅動器) |
| CY22800-082A | Universal Programmable Clock Generator (UPCG) |
| CY22800 | Universal Programmable Clock Generator (UPCG) |
相關代理商/技術參數(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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