HD64F2357F20V Datasheet, PDF (238/1049 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-chip Microcomputer H8S Family / H8S/2300 Series

Figure 7-11 illustrates operation in normal mode.
Address TA
Transfer
Address TB
Address BA
Legend:
Address TA = LA
Address TB = LB
Address BA = LA + SAIDE • (–1)^SAID • (2^DTSZ • (N–1))
Address BB = LB + DAIDE • (–1)^DAID • (2^DTSZ • (N–1))
Where : LA = Value set in MARA
LB = Value set in MARB
N = Value set in ETCRA
Address BB
Figure 7-11 Operation in Normal Mode
Transfer requests (activation sources) are external requests and auto-requests.
With auto-request, the DMAC is only activated by register setting, and the specified number of transfers are performed
automatically. With auto-request, cycle steal mode or burst mode can be selected. In cycle steal mode, the bus is released
to another bus master each time a transfer is performed. In burst mode, the bus is held continuously until transfer ends.
Rev.6.00 Oct.28.2004 page 208 of 1016
REJ09B0138-0600H