D12320VF25IV Datasheet, PDF (323/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 7 DMA Controller (Not Supported in the H8S/2321)
7.5.11 DMAC Bus Cycles (Single Address Mode)
Single Address Mode (Read): Figure 7.27 shows a transfer example in which TEND output is
enabled and byte-size single address mode transfer (read) is performed from external 8-bit, 2-state
access space to an external device.
φ
Address bus
RD
DACK
TEND
DMA read
DMA read
DMA read
DMA
DMA read dead
Bus
release
Bus
release
Bus
release
Bus Last transfer Bus
release cycle
release
Figure 7.27 Example of Single Address Mode (Byte Read) Transfer
Rev.6.00 Sep. 27, 2007 Page 291 of 1268
REJ09B0220-0600