SH7760 Datasheet, PDF (500/1345 Pages) Renesas Technology Corp – SuperHTM RISC engine

11.6.4 DMA Audio Receive Operation
To receive audio data in DMA transfer, specify DMABRG mode in bits DMS1 and DMS0 in
DMAOR and a transfer request source and request acceptance priority order in DMARSRA and
DMARCR. Then, specify the start address of a receive buffer storing receive audio data in
DMAARXDAR and the number of transfer bytes in DMAARXTCR. Writing 1 to the RDE bit in
DMAACR starts receiving the data.
11.6.5 DMA Audio Transmit Operation
To transmit audio data in DMA transfer, specify DMABRG mode in bits DMS1 and DMS0 in
DMAOR and a transfer request source and request acceptance priority order in DMARSRA and
DMARCR. Specify the start address of a transmit buffer storing transmit audio data in
DMAATXSAR and the number of transfer bytes in DMAATXTCR. Writing 1 to the TDE bit in
DMAACR starts transmitting the data.
Rev. 1.0, 02/03, page 450 of 1294