HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 291

• Manufacturer Part Number: HD6417706
• Description: Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

9.2
Table 9.1 shows the DMAC pins.
Table 9.1
9.3
DMAC has a total of 17 registers. Each channel has four control registers. One other control
register is shared by all channels.
Refer to section 23, List of Registers, for more details of the addresses and access sizes.
Channel 0
Channel 1
Channel Name
0
1
DMA source address register 0 (SAR0)
DMA destination address register 0 (DAR0)
DMA transfer count register 0 (DMATCR0)
DMA channel control register 0 (CHCR0)
DMA source address register 1 (SAR1)
DMA destination address register 1 (DAR1)
DMA transfer count register 1 (DMATCR1)
DMA channel control register 1 (CHCR1)
Register Description
Input/Output Pin
DMA transfer request
DREQ acknowledge
DMA request
acknowledge
DMA transfer request
DREQ acknowledge
DMA request
acknowledge
Pin Configuration
Symbol
DREQ0
DACK0
DRAK0
DREQ1
DACK1
DRAK1
I/O
I
O
O
I
O
O
Function
DMA transfer request input from
external device to channel 0
Strobe output to an external I/O at
DMA transfer request from external
device to channel 0
Output showing that DREQ0 has been
accepted
DMA transfer request input from
external device to channel 1
Strobe output to an external I/O at
DMA transfer request from external
device to channel 1
Output showing that DREQ1 has been
accepted
Rev. 4.00, 03/04, page 245 of 660