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參數資料
| 型號： | ICS9148-18 |
| 英文描述： | Pentium/ProTM System Clock Chip |
| 中文描述： | 奔騰/ ProTM系統時鐘芯片 |
| 文件頁數： | 10/16頁 |
| 文件大小： | 691K |
| 代理商： | ICS9148-18 |
10
ICS9148-02
PD# Timing Diagram
The power down selection is used to put the part into a very low power state without turning off the power to the part. PD# is
an asynchronous active low input. This signal is synchronized internal by the
ICS9148-02
prior to its control action of
powering down the clock synthesizer. Internal clocks will not be running after the device is put in power down state. When PD#
is active (low) all clocks are driven to a low state and held prior to turning off the VCOs and the Crystal oscillator. The power
on latency is guaranteed to be less than 3mS. The power down latency is less than three CPUCLK cycles. PCI_STOP# and
CPU_STOP# are dont care signals during the power down operations.
Notes:
1. All timing is referenced to the Internal CPUCLK (defined as inside the ICS9148 device).
2. PD# is an asynchronous input and metastable conditions may exist. This signal is synchronized inside the ICS9148.
3. The shaded sections on the VCO and the Crystal signals indicate an active clock is being generated.
Notes:
1. All timing is referenced to the Internal CPUCLK (defined as inside the ICS9148 device.)
2. PCI_STOP# is an asynchronous input, and metastable conditions may exist. This signal is required to be synchronized
inside the ICS9148.
3. All other clocks continue to run undisturbed.
4. PD# and CPU_STOP# are shown in a high (true) state.
相關PDF資料 |
PDF描述 |
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| ICS9148-20 | Pentium/ProTM System Clock Chip |
| ICS9148yF-10 | Pentium/ProTM System Clock Chip |
| ICS9148yF-111 | Frequency Generator & Integrated Buffers for PENTIUM/ProTM |
| ICS9148B-04 | Frequency Generator & Integrated Buffers for PENTIUM/ProTM |
| ICS9148G-12 | Pentium/ProTM System Clock Chip |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ICS9148-20 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:Pentium/ProTM System Clock Chip |
| ICS9148-25 | 制造商:ICS 制造商全稱:ICS 功能描述:Pentium/Pro System and Cyrix Clock Chip |
| ICS9148-26 | 制造商:ICS 制造商全稱:ICS 功能描述:Frequency Generator & Integrated Buffers for PENTIUM/ProTM |
| ICS9148-32 | 制造商:ICS 制造商全稱:ICS 功能描述:Pentium/ProTM System Clock Chip |
| ICS9148-36 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:Frequency Generator & Integrated Buffers for PENTIUM/ProTM |
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