參數(shù)資料
型號(hào): 24707_PUB
英文描述: Programmable Resolution 1-Wire Digital Thermometer
中文描述: 時(shí)鐘發(fā)生器規(guī)格的AMD Athlon? 64和AMD Opteron?處理器
文件頁數(shù): 11/51頁
文件大?。?/td> 1783K
代理商: 24707_PUB
24707 Rev. 3.08 September 2003
Clock Generator Specification for AMD64 Processors
1. On a given PCI clock rising edge, the PCISTOP33_L signal is asserted (first arrow from the
left in the timing diagram).
2. On the next rising edge of the PCI clock, the clock synthesis chip samples PCIST0P33_L
deasserted (second arrow from the left).
3. The PCI clocks start running with the next rising edge of the PCI clock (third arrow from the
left).
1.6.2
Stopping the 33-MHz PCI Clocks
The 33-MHz PCI clocks must be stopped using the following sequence of events:
1. On a rising edge of the PCI clock, the PCISTOP33_L signal is asserted (4th arrow).
2. On the next rising edge of the PCI clock, the clock synthesis chip samples PCISTOP33_L
asserted.
3. On the next falling edge of the PCI clock, the PCI clocks go Low and stay Low.
Figure 1 is a picture of the PCISTOP33_L control sequence. All numbered arrow references are
counted from left to right.
Figure 1. PCISTOP33_L Control Signal
Note:
The fifth arrow, from the left, shows there is no rising edge on the stopped PCI clocks.
Chapter 1
Description
7
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