SH7058 Datasheet, PDF (225/1130 Pages) Renesas Technology Corp – Renesas SuperHTM RISC engine

1st bus cycle
DMAC
SAR
DAR
Data buffer
Memory
Transfer source
module
Transfer destination
module
The SAR value is taken as the address, and data is read from the transfer source
module and stored temporarily in the DMAC.
2nd bus cycle
DMAC
SAR
DAR
Data buffer
Memory
Transfer source
module
Transfer destination
module
The DAR value is taken as the address, and data stored in the DMAC's data
buffer is written to the transfer destination module.
Figure 10.3 Direct Address Operation in Dual Address Mode
Rev. 3.0, 09/04, page 184 of 1086