参数资料
型号: ICS9248F-20LF
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 时钟产生/分配
英文描述: 100 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48
封装: 0.300 INCH, SSOP-48
文件页数: 8/11页
文件大小: 427K
代理商: ICS9248F-20LF
6
ICS9248-20
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 internally by the ICS9248-20 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 ICS92 48 device).
2. PD# is an asynchronous input and metastable conditions may exist. This signal is synchronized inside the ICS92 48.
3. The shaded sections on the VCO and the Crystal signals indicate an active clock is being generated.
相关PDF资料
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ICS9248YF-101 137 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48
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