r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 647

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

Bit
13, 12
11 to 8
Bit Name
SM[1:0]
RS[3:0]
Initial
Value
00
0000
R/W
R/W
R/W
Descriptions
Source Address Mode
Specify whether the DMA source address is
incremented, decremented, or left fixed.
00: Fixed source address
01: Source address is incremented
10: Source address is decremented
11: Setting prohibited
Resource Select
Specify which transfer requests will be sent to the
DMAC. The changing of transfer request source should
be done in the state that the DMA enable bit (DE) is
cleared to 0.
0000: External request, dual address mode
0100: Auto request
1000: Selected by DMA extended resource selector (for
Other than above: Setting prohibited
Note: External request specification is valid only in
+1 in byte units transfer
+2 in word units transfer
+4 in longword units transfer
+16 in 16-byte units transfer
+32 in 32-byte units transfer
–1 in byte units transfer
–2 in word units transfer
–4 in longword units transfer
Setting prohibited in 16/32-byte units transfer
on-chip modules)
CHCR0 to CHCR3. None of the external
request can be selected in CHCR4 and CHCR5.
Section 14 Direct Memory Access Controller (DMAC)
Rev. 1.00 Oct. 01, 2007 Page 581 of 1956
REJ09B0256-0100