參數(shù)資料
型號(hào): AMD-K5
廠商: Advanced Micro Devices, Inc.
英文描述: 32-Bit Superior Price/Performance Value Microprocessor(32位高性/價(jià)比微處理器)
中文描述: 32位卓越的價(jià)格/性能值微處理器(32位高性/價(jià)比微處理器)
文件頁數(shù): 38/100頁
文件大?。?/td> 2533K
代理商: AMD-K5
28
AMD-K5 Processor Data Sheet
18522F/0—Jan1997
PRELIMINARY INFORMATION
8
Processor Operation
8.1
Power-On Configuration
The AMD-K5 processor signals at reset are listed in Table 7.
8.2
Clock State
The AMD-K5 processor uses the Enhanced 486 protocol to con-
trol the clock. This protocol provides for stopping the clock
from hardware using the STPCLK control signal, or from soft-
ware using the HALT instruction. During the clock-stopped
states, cache coherency is maintained by temporarily enabling
the clock for snoop processing and recognizing HOLD/HLDA
arbitration sequences.
A state transition diagram for a stop clock state machine
implementing five clocking states—the Enhanced 486
protocol—is illustrated in Figure 3 on page 29.
Table 7.
Signals at Reset
Output
State at
Reset
Float
1
1
Undefined
1
1
0
Undefined
Undefined
Float
Float
Output
State at
Reset
1
1
1
0
1
Undefined
Undefined
1
0
Undefined
Undefined
Address
ADS
APCHK
BE7
–BE0
BRDY
BRDYC
BREQ
CACHE
D/C
Data
DP7–DP0
FERR
HIT
HITM
HLDA
LOCK
M/IO
PCD
PCHK
PRDY
PWT
W/R
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