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参数资料
| 型号： | CY2256 |
| 厂商： | Cypress Semiconductor Corp. |
| 英文描述： | Pentium and Cyrix 6x86 Compatible Clock Synthesizer/Driver for OPTi Viper Chipset(应用于 OPTi Viper芯片组的奔腾和 Cyrix公司 6x86兼容的时钟合成器/驱动器) |
| 中文描述： | 奔腾，Cyrix 6x86兼容的时钟合成器/芯片组的奥普蒂蝰蛇（应用于奥普蒂蝰蛇芯片组的奔腾和Cyrix公司6x86兼容的时钟合成器/驱动器驱动程序） |
| 文件页数： | 4/7页 |
| 文件大小： | 97K |
| 代理商： | CY2256 |
CY2256
4
]
Switching Characteristics
[4]
Parameter
t
1
t
1C
t
1C
t
1D
t
1D
t
2
Output
Description
Test Conditions
Min.
45%
5.0
12.0
5.0
12.0
1
Max.
55%
Unit
All
CPUCLKA/B
PCICLK
CPUCLKA/B
PCICLK
CPUCLKA/B
Output Duty Cycle
[5]
CPU Clock HIGH Time
PCI Clock HIGH Time
[6]
CPU Clock LOW Time
PCI Clock LOW Time
[6]
CPU Clock Rising and Fall-
ing Edge Rate
CPU Clock Rise Time
CPU Clock Fall Time
PCI Clock Rising and Fall-
ing Edge Rate
Reference Clock Rising
and Falling Edge Rate
CPU-CPU Clock Skew
PCI-PCI Clock Skew
CPU-PCI Clock Skew
[7]
t
1
= t
1A
÷
t
1B
Measured at 2.4V
Measured at 2.4V
Measured at 0.4V
Measured at 0.4V
Measured between 0.4V and 2.4V
ns
ns
ns
ns
V/ns
4.0
t
3
t
4
t
2
CPUCLKA/B
CPUCLKA/B
PCICLK
Measured between 0.4V and 2.4V
Measured between 2.4V and 0.4V
Measured between 0.4V and 2.4V
0.5
0.5
1
2.0
2.0
4
ns
ns
V/ns
t
2
REFCLK
Measured between 0.4V and 2.4V
0.5
V/ns
t
5
t
6
t
7
CPUCLKA
PCICLK
CPUCLKA/B,
PCICLK
CPUCLKA/B
CPUCLKA/B
Measured at 1.5V
Measured at 1.5V
Measured at 1.5V
200
200
500
ps
ps
ps
t
8
t
9
Cycle-Cycle Clock Jitter
[7]
Power-up Time
CPU Clock jitter
CPU clock stabilization from
power-up
PCI clock stabilization from
power-up
250
3
ps
ms
t
10
PCICLK
Power-up Time
3
ms
Notes:
4.
5.
6.
All parameters specified with outputs fully loaded.
Duty cycle is measured at 1.5V.
A LOW and HIGH time of 12 ns corresponds to a PCICLK frequency of 33.33 MHz. For PCICLK frequencies of 30 MHz and 25 MHz, the LOW and HIGH
times are each respectively 13.33 ns and 16 ns.
Synchronous mode only
7.
Switching Waveforms
Duty Cycle Timing
t
1B
2256–3
1.5V
1.5V
1.5V
t
1A
相关PDF资料 |
PDF描述 |
|---|---|
| CY2273A | Pentium㈢/II, 6x86, K6 Clock Synthesizer/Driver for Desktop PCs with Intel 82430TX, 82440LX or ALI IV/IV+, AGP and 3 DIMMs |
| CY2273A-1 | Pentium㈢/II, 6x86, K6 Clock Synthesizer/Driver for Desktop PCs with Intel 82430TX, 82440LX or ALI IV/IV+, AGP and 3 DIMMs |
| CY2273A-2 | Pentium㈢/II, 6x86, K6 Clock Synthesizer/Driver for Desktop PCs with Intel 82430TX, 82440LX or ALI IV/IV+, AGP and 3 DIMMs |
| CY2273A-3 | Pentium㈢/II, 6x86, K6 Clock Synthesizer/Driver for Desktop PCs with Intel 82430TX, 82440LX or ALI IV/IV+, AGP and 3 DIMMs |
| CY2273A-4 | Pentium㈢/II, 6x86, K6 Clock Synthesizer/Driver for Desktop PCs with Intel 82430TX, 82440LX or ALI IV/IV+, AGP and 3 DIMMs |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CY225670SNC | 制造商:Cypress Semiconductor 功能描述: |
| CY2256PVC-1 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CPU System Clock Generator |
| CY2256SC-1 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CPU System Clock Generator |
| CY2257 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CPU System Clock Generator |
| CY2257SC1 | 制造商:CYPRESS 功能描述:* |
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