參數(shù)資料
型號(hào)： 272420-007
廠(chǎng)商： Intel Corp.
英文描述： Intel386 EX Embedded Microprocessor
中文描述： 英特爾386防爆嵌入式微處理器
文件頁(yè)數(shù)： 47/56頁(yè)
文件大?。?/td> 766K
代理商： 272420-007
Intel386 EX Embedded Microprocessor
Datasheet
47
7.0
Bus Cycle Waveforms
Figures 20 through 30 present various bus cycles that are generated by the processor. What is
shown in the figure is the relationship of the various bus signals to CLK2. These figures along with
the information present in AC Specifications allow the user to determine critical timing analysis for
a given application.
Figure 20. Basic Internal and External Bus Cycles
State
A25:1, BHE#
BLE#, D/C#
M/IO#
W/R#
ADS#
NA#
D15:0
RD#
WR#
BS8#
LOCK#
T1
T2
T1
T2
T1
T2
Ti
T1
T2
Cycle 1
Nonpipelined
External
(Write)
[Late Ready]
Cycle 2
Nonpipelined
Internal
(Read)
Cycle 3
Nonpipelined
Internal
(Write)
[Early Ready]
Cycle 4
Nonpipelined
External
(Read)
REFRESH#
LBA#
CLK2
CLKOUT
Valid 1
Valid 2
Valid 3
Out 1
Valid 1
Valid 2
Valid 3
In
2
Out 3
In
4
Idle
Cycle
Idle
Cycle
Idle
Cycle
Ti
Ti
End Cycle 1
End Cycle 2
End Cycle 3
READY#
End Cycle 4
Valid 4
Valid 4
A2486-03
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