AMD Duron Manual de usuario Pagina 27

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Chapter 4 Power Management 15
23802ESeptember 2000 AMD Duron Processor Data Sheet
Preliminary Information
Connection State
Machines
Figure 6 and Figure 7 describe the system and processor
connection state machines, respectively.
Figure 6. System Connection States
Condition
1 A disconnect is requested and probes are still pending
2 A disconnect is requested and no probes are pending
3 A CONNECT special cycle from the processor
4 No probes are pending
5 PROCRDY is deasserted
6 A probe needs service
7 PROCRDY is asserted
8
3 SYSCLK periods after CLKFWDRST is deasserted.
Although re
connected to the system interface, the
system must not issue any non-NOP SysDC commands
for a minimum of four SYSCLK periods after
deasserting CLKFWDRST.
Action
A
Deassert CONNECT 8 SYSCLK periods after
last probe/command sent
BAssert CLKFWDRST
C Assert CONNECT
D Deassert CLKFWDRST
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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