Example Of Dma Transfer Between On-Chip Sci And External Memory - Hitachi SH7032 Hardware Manual

9.4.2

Example of DMA Transfer between On-Chip SCI and External Memory

In this example, receive data of on-chip serial communication interface (SCI) channel 0 is
transferred to external memory using DMAC channel 3. Table 9.8 shows the transfer conditions
and register settings.
Table 9.8 Transfer Conditions and Register Settings for Transfer between On-Chip SCI
and External Memory
Transfer Conditions
Transfer source: RDR0 of on-chip SCI0
Transfer destination: external memory
Number of transfers: 64
Transfer destination address: incremented
Transfer source address: fixed
Transfer request source (transfer request signal): SCI0 (RXI0)
Bus mode: cycle-steal
Transfer unit: byte
DEI interrupt request generated at end of transfer (channel 3
enabled for transfer)
Channel priority order: fixed (0 > 3 > 2 > 1) (all channels
enabled for transfer)
214
Register Setting
SAR3 H'FFFFEC5
DAR3 Destination address
TCR3 H'0040
CHCR3 H'4405
DMAOR H'0001