HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 342
![no-image](/images/no-image-200.jpg)
HD6417660
Manufacturer Part Number
HD6417660
Description
Renesas 32-Bit RISC Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417660.pdf
(846 pages)
- Current page: 342 of 846
- Download datasheet (6Mb)
Rev. 1.00, 02/04, page 304 of 804
Bit
15
14
13
12
Bit Name
DM1
DM0
SM1
SM0
Initial
Value
0
0
0
0
R/W
R/W
R/W
R/W
R/W
Descriptions
Destination Address Mode
DM1 and DM0 select whether the DMA destination address
is incremented, decremented, or left fixed. (In single
address mode, DM1 and DM0 bits are ignored when data
is transferred to an external device with DACK.)
00: Fixed destination address (setting prohibited in 16-byte
01: Destination address is incremented (+1 in 8-bit transfer,
10: Destination address is decremented (–1 in 8-bit
11: Reserved (setting prohibited)
Source Address Mode
SM1 and SM0 select whether the DMA source address is
incremented, decremented, or left fixed. (In single address
mode, SM1 and SM0 bits are ignored when data is
transferred from an external device with DACK.)
00: Fixed source address (setting prohibited in 16-byte
01: Source address is incremented (+1 in 8-bit transfer, +2
10: Source address is decremented (–1 in 8-bit transfer, –2
11: Reserved (setting prohibited)
transfer)
+2 in 16-bit transfer, +4 in 32-bit transfer, +16 in 16-
byte transfer)
transfer, –2 in 16-bit transfer, –4 in 32-bit transfer;
illegal setting in 16-byte transfer)
transfer)
in 16-bit transfer, +4 in 32-bit transfer, +16 in 16-byte
transfer)
in 16-bit transfer, –4 in 32-bit transfer; illegal setting in
16-byte transfer)
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