參數(shù)資料
型號: AXDA1800DUT3C
元件分類: 微處理器
英文描述: Microprocessor
中文描述: 微處理器
文件頁數(shù): 28/104頁
文件大?。?/td> 1769K
代理商: AXDA1800DUT3C
16
Power Management
Chapter 4
AMD Athlon XP Processor Model 8 Data Sheet
25175E—November 2002
Preliminary Information
Connect State
Diagram
Figure 6 below and Figure 7 on page 17 show the Northbridge
and processor connect state diagrams, respectively.
Figure 6. Northbridge Connect State Diagram
Condition
1
2
3
4
5
6
7
A disconnect is requested and probes are still pending.
A disconnect is requested and no probes are pending.
A Connect special cycle from the processor.
No probes are pending.
PROCRDY is deasserted.
A probe needs service.
PROCRDY is asserted.
Three SYSCLK periods after CLKFWDRST is deasserted.
Although reconnected to the system interface, the
Northbridge must not issue any non-NOP SysDC
commands for a minimum of four SYSCLK periods after
deasserting CLKFWDRST.
8
Action
A
Deassert CONNECT eight SYSCLK periods
after last SysDC sent.
Assert CLKFWDRST.
Assert CONNECT.
Deassert CLKFWDRST.
B
C
D
Disconnect
Pending
Connect
Disconnect
Requested
Reconnect
Pending
Probe
Pending 2
Disconnect
Probe
Pending 1
1
3
2/A
4/A
5/B
3/C
7/D,C
8
6/C
7/D
8
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