CHAPTER 6 DMA FUNCTIONS (DMA CONTROLLER)
User’s Manual U12688EJ4V0UM00
178
6.4.2 DMAC state transition
Except block transfer mode, each time the processing for a DMA service is completed, the bus is released (the
bus enters bus release mode).
Figure 6-1. DMAC Bus Cycle State Transition Diagram
(a) Two-cycle transfer
(b) Flyby transfer
TI
T0
T1R
T1RI
T2R
T1W
T2W
T3
TE
TI
T2RI
T1WI
TI
T0
T1F
T1FH
T2F
T3F
T3
TE
TI
T2FH
T1FHI
T1FR
T2FR
T3FR
T1FRB
T1FRBI
T2FRB
T3FRB
T4
Содержание V850E/MS1 UPD703100
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