AMD Duron Manual do Utilizador descarregar pdf (Página 27)

Chapter 4 Power Management 15

23802E—September 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

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

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

2/A

4/A

5/B

3/C

7/D,C

6/C 7/D

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 83 84

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