Rev. 1.0, 09/01, page 364 of 904
ø pin
Bus cycle
CPU
operation
Last transfer cycle
2 bus cycles
CPU cycle
External
space
External
space
External
space
External
space
External
space
External
space
EXDMA single
transfer cycle
EXDMA single
transfer cycle
CPU cycle CPU cycle
CPU cycle
CPU cycle
CPU cycle
Figure 8.36 External Request/Cycle Steal Mode/Normal Transfer Mode
(CPU Cycles/Single Address Mode/Low Level Sensing)
ø pin
Bus cycle
acceptance
internal
processing
state
Bus release
Bus release
Bus release
Start of high
level sensing
Start of high
level sensing
Start of high
level sensing
EXDMA single
transfer cycle
EXDMA single
transfer cycle
EXDMA single
transfer cycle
Edge confirmation
Start of transfer
processing
Edge confirmation
Start of transfer
processing
Edge confirmation
Start of transfer
processing
Figure 8.37 External Request/Cycle Steal Mode/Normal Transfer Mode
(No Contention/Single Address Mode/Falling Edge Sensing)
Содержание H8S/2376 F-ZTAT
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