AMD-K6-2ESLASH233AMZ datasheet(190/332 Pages) AMD

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AMD-K6-2E/233AMZ Datasheet(PDF) 190 Page - Advanced Micro Devices

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172

Bus Cycles

Chapter 6

AMD-K6™-2E Processor Data Sheet

22529B/0—January 2000

Preliminary Information

Shutdown Cycle

In Figure 70, a shutdown (triple fault) occurs in the first half of

the waveform, and a shutdown special cycle follows in the

second half. The processor enters shutdown when an interrupt

or exception occurs during the handling of a double fault (INT

8), which amounts to a triple fault. When the processor

encounters a triple fault, it stops its activity on the bus and

generates the shutdown special bus cycle (BE[7:0]# = FEh).

The system logic must assert NMI, INIT, RESET, or SMI# to get

the processor out of the Shutdown state.

Figure 70. Shutdown Cycle

Shutdown Occurs

(Triple Fault)

Shutdown Special Cycle

CLK

A[31:3]

BE[7:0]#

ADS#

LOCK#

M/IO#

D/C#

W/R#

D[63:0]

KEN#

BRDY#

A[4:3] = 00b

FEh

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