SH7040 Datasheet, PDF (274/923 Pages) Renesas Technology Corp – Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)

External address bus External data bus
This LSI
DMAC
External
memory
External device
with DACK
DACK
DREQ
: Data flow
Figure 11.5 Data Flow in Single Address Mode
Two types of transfers are possible in the single address mode: (a) transfers between external
devices with DACK and memory-mapped external devices, and (b) transfers between external
devices with DACK and external memory. The only transfer requests for either of these is the
external request (DREQ). Figure 11.6 shows the DMA transfer timing for the single address mode.
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