r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 633
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r5s77631ay266bgv
Manufacturer Part Number
r5s77631ay266bgv
Description
Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R5S77631AY266BGV.pdf
(2026 pages)
- Current page: 633 of 2026
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14.2
The external pins for the DMAC are described below. Table 14.1 lists the configuration of the pins
that are connected to external device. The DMAC has pins for four channels (channel 0 to 3) for
external bus use.
The input/output pins of channel 1 are divided in two groups: normal I/O group and mirror I/O
group. The input/output operations of pins in two groups are always the same. The pin select
register of the GPIO is used to select the Channel 1 pins.
Table 14.1 Pin Configuration
Channel
0
1
Normal
I/O
Pins
Miller
I/O
Pins
Input/Output Pins
Pin Name Function
DREQ0*
DACK0*
TEND0*
DREQ1*
DACK1*
TEND1*
DREQ1M*
DACK1M*
TEND1M*
2
2
2
2
1
1
2
2
1
DMA transfer request
DMA transfer request
acknowledge
DMA transfer end
notification
DMA transfer request
DMA transfer request
acknowledge
DMA transfer end
notification
DMA transfer request
DMA transfer request
acknowledge
DMA transfer end
notification
I/O
Input
Output Strobe output from channel 0 to
Output DMA transfer end output from channel
Input
Output Strobe output from channel 1 to
Output DMA transfer end output from channel
Input
Output Strobe output from channel 1 to
Output DMA transfer end output from channel
Section 14 Direct Memory Access Controller (DMAC)
Description
DMA transfer request input from
external device to channel 0
external device which has output,
regarding DMA transfer request
0 to external device
DMA transfer request input from
external device to channel 1
external device which has output,
regarding DMA transfer request
1 to external device
DMA transfer request input from
external device to channel 1
external device which has output,
regarding DMA transfer request
1 to external device
Rev. 1.00 Oct. 01, 2007 Page 567 of 1956
REJ09B0256-0100
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