HD64F7050 RENESAS [Renesas Technology Corp], HD64F7050 Datasheet - Page 158

• Manufacturer Part Number: HD64F7050
• Description: 32-Bit RISC Microcomputer SuperH RISC engine Family/
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 9 Direct Memory Access Controller (DMAC)
9.1.3
Table 9.1 shows the DMAC pins.
Table 9.1
Channel
0
1
9.1.4
Table 9.2 summarizes the DMAC registers. DMAC has a total of 17 registers. Each channel has
four control registers. One other control register is shared by all channels. There are two channel 0
dedicated registers, ISAR and IDAR, which preserve different initial transfer source and
destination addresses than those of the SAR0 and DAR0. There is also an IAR used by the indirect
address mode.
Rev. 5.00 Jan 06, 2006 page 138 of 818
REJ09B0273-0500
Pin Configuration
Register Configuration
Name
DMA transfer request
DMA transfer request
acknowledge
DREQ0 acceptance
confirmation
DMA transfer request
DMA transfer request
acknowledge
DREQ1 acceptance
confirmation
DMAC 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
DMA transfer strobe output from
channel 0 to external device
Sampling receive acknowledge output
for DMA transfer request input from
external source
DMA transfer request input from
external device to channel 1
DMA transfer strobe output from
channel 1 to external device
Sampling receive acknowledge output
for DMA transfer request input from
external source