Figure 13.7 Data Flow In Single Address Mode - Renesas HD6417641 Hardware Manual

This LSI
Data flow

Figure 13.7 Data Flow in Single Address Mode

Two kinds of transfer are possible in single address mode: (1) transfer between an external
device with DACK and a memory-mapped external device, and (2) transfer between an
external device with DACK and external memory. In both cases, only the external request
signal (DREQ) is used for transfer requests.
Section 13 Direct Memory Access Controller (DMAC)
External address bus
DMAC
DACK
DREQ
External data bus
External
memory
External device
with DACK
Rev. 4.00 Sep. 14, 2005 Page 435 of 982
REJ09B0023-0400