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參數(shù)資料
| 型號： | 9148F-02LF |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | 66.6 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| 封裝： | 0.300 INCH, SSOP-48 |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 691K |
| 代理商： | 9148F-02LF |
9
ICS9148-02
PCI_STOP# Timing Diagram
PCI_STOP# is an asynchronous input to the ICS9148-02. It is used to turn off the PCICLK (0:5) clocks for low power
operation. PCI_STOP# is synchronized by the ICS9148-02 internally. The minimum that the PCICLK (0:5) clocks are enabled
(PCI_STOP# high pulse) is at least 10 PCICLK (0:5) clocks. PCICLK (0:5) clocks are stopped in a low state and started with
a full high pulse width guaranteed. PCICLK (0:5) clock on latency cycles are only one rising PCICLK clock off latency is one
PCICLK clock.
CPU_STOP# Timing Diagram
CPUSTOP# is an asychronous input to the clock synthesizer. It is used to turn off the CPUCLKs for low power operation.
CPU_STOP# is synchronized by the ICS9148-02. The minimum that the CPUCLK is enabled (CPU_STOP# high pulse) is
100 CPUCLKs. All other clocks will continue to run while the CPUCLKs are disabled. The CPUCLKs will always be stopped
in a low state and start in such a manner that guarantees the high pulse width is a full pulse. CPUCLK on latency is less than
4 CPUCLKs and CPUCLK off latency is less than 4 CPUCLKs.
(Drawing shown on next page.)
Notes:
1. All timing is referenced to the internal CPUCLK.
2. CPU_STOP# is an asynchronous input and metastable conditions may exist.
This signal is synchronized to the CPUCLKs inside the ICS9148-02.
3. All other clocks continue to run undisturbed.
4. PD# and PCI_STOP# are shown in a high (true) state.
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