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参数资料
| 型号： | W254B |
| 英文描述： | Clocks and Buffers |
| 中文描述： | 时钟和缓冲器 |
| 文件页数： | 5/17页 |
| 文件大小： | 247K |
| 代理商： | W254B |
W254B
Document #: 38-07233 Rev. *A
Page 5 of 17
Table 4. 100 MHz Group Timing Relationships and Tolerances
CPU to
SDRAM
5.0 ns
500 ps
CPU to
3V66
5.0ns
500 ps
SDRAM to
3V66
0.0 ns
500 ps
3V66 to PCI
1.5-3.5 ns
500 ps
PCI to APIC
0.0 ns
1.0 ns
USB & DOT
Async
N/A
Offset
Tolerance
Figure 4. Group Offset Waveforms (133-MHz CPU/100-MHz SDRAM Clock)
0 ns
40 ns
30 ns
20 ns
10 ns
CPU 133-MHz
SDRAM 100-MHz
3V66 66-MHz
PCI 33-MHz
REF 14.318-MHz
USB 48-MHz
DOT 48-MHz
Cycle Repeats
APIC33-MHz
Table 5. 133 MHz/SDRAM 100 MHz Group Timing Relationships and Tolerances
CPU to
SDRAM
0.0 ns
500 ps
CPU to 3V66
0.0 ns
500 ps
SDRAM to
3V66
0.0 ns
500 ps
3V66 to PCI
1.5-3.5 ns
500 ps
PCI to APIC
0.0 ns
1.0 ns
USB & DOT
Async
N/A
Offset
Tolerance
Figure 5. Group Offset Waveforms (133-MHz CPU/133-MHz SDRAM Clock)
0 ns
40 ns
30 ns
20 ns
10 ns
CPU 133-MHz
SDRAM 133-MHz
3V66 66-MHz
PCI 33-MHz
REF 14.318-MHz
USB 48-MHz
DOT 48-MHz
Cycle Repeats
APIC33-MHz
相关PDF资料 |
PDF描述 |
|---|---|
| W255 | Clocks and Buffers |
| W255H | 200-MPz 24-Output Buffer for 4DDR or 3 SDRAM DIMMS |
| W255HT | 200-MPz 24-Output Buffer for 4DDR or 3 SDRAM DIMMS |
| W25P010AD-8 | x32 Fast Synchronous SRAM |
| W25P010AF-6 | x32 Fast Synchronous SRAM |
相关代理商/技术参数 |
参数描述 |
|---|---|
| W254BX | 制造商:Cypress Semiconductor 功能描述: |
| W254E11 | 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:CV Motion Control Op./Intro. DX CODE ZA |
| W255 | 制造商:CYPRESS 制造商全称:Cypress Semiconductor 功能描述:200-MHz 24-Output Buffer for 4 DDR or 3 SDRAM DIMMS |
| W2551 | 制造商:Performance Tool 功能描述:USB Rechargeable LED Key Light 制造商:PERFORMANCE TOOLS 功能描述:USB RECHARGEABLE LIGHT KEYCHAIN |
| W255E11 | 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:CV Motion Control Op./Details DX CODE ZA |
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