Table 14.8 External Request Transfer Sources And Destinations In Normal Mode - Hitachi SH7751 Hardware Manual

*7 See tables 14.8 and 14.9 for the transfer sources and transfer destinations in DMA
transfer by means of an external request.
(a) Normal DMA Mode
Table 14.8 shows the memory interfaces that can be specified for the transfer source and transfer
destination in DMA transfer initiated by an external request supported by the SH7751 Series in
normal DMA mode.

Table 14.8 External Request Transfer Sources and Destinations in Normal Mode

Transfer Direction (Settable Memory Interface)
Transfer Source
1 Synchronous DRAM
2 External device with DACK
3 SRAM-type, DRAM
4 External device with DACK
5 Synchronous DRAM
6 SRAM-type, MPX, PCMCIA
7 SRAM-type, DRAM, PCMCIA,
MPX
8 SRAM-type, MPX, PCMCIA
"SRAM-type" in the table indicates an SRAM, byte control SRAM, or burst ROM setting.
Notes: 1. Memory interfaces on which transfer is possible in single address mode are SRAM,
byte control SRAM, burst ROM, DRAM, and synchronous DRAM.
2. When performing dual address mode transfer, make the DACK output setting for the
SRAM, byte control SRAM, burst ROM, PCMCIA, or MPX interface.
Rev. 3.0, 04/02, page 500 of 1064
Transfer Destination
External device with DACK
Synchronous DRAM
External device with DACK
SRAM-type, DRAM
SRAM-type, MPX, PCMCIA
* Synchronous DRAM
SRAM-type, MPX, PCMCIA
* SRAM-type, DRAM, PCMCIA,
MPX
*: DACK output setting in dual address mode transfer
Usable
Address DMAC
Mode Channels
Single 0, 1
Single 0, 1
Single 0, 1
Single 0, 1
* Dual 0, 1
Dual 0, 1
* Dual 0, 1
Dual 0, 1