|
SH7047 Datasheet, PDF (162/764 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTMRISC engine Family/SH7000 Series | |||
|
◁ |
Start
Initial settings
DTMR, DTCR, DTIAR, DTSAR, DTDAR
No
NMIF = AE = 0?
Yes
Transfer request
No
generated?
Yes
DTC vector read
Transfer information read
DTCRA = DTCRA â 1 (normal/block transfer mode)
DTCRAL = DTCRAL â 1 (repeat mode)
Transfer (1 transfer unit)
DTSAR, DTDAR update
DTCRB = DTCRB â 1 (block transfer mode)
NMIF ⢠NMIM
No
+ AE = 1?
Yes
Transfer information write
Block
transfer mode and
Yes
DTCRB â 0?
No
Transfer information write
NMI or address error
No
CHNE = 0?
Yes
CPU interrupt request
When DISEL = 1 or DTCRA = 0 (normal/block transfer mode)
When DISEL = 1 (repeat transfer mode)
End
Figure 8.5 DTC Operation Flowchart
Rev. 2.00, 09/04, page 122 of 720
|
▷ |