Renesas M32R/ECU Series User Manual page 215

9
DMA4 Channel Control Register 0 (DM4CNT0)
b0 1 2
MDSEL4 TREQF4 REQSL4
0 0 0
b Bit Name
0 MDSEL4
DMA4 transfer mode select bit
1 TREQF4
DMA4 transfer request flag bit
2, 3 REQSL4
DMA4 transfer request source select bit
4 TENL4
DMA4 transfer enable bit
5 TSZSL4
DMA4 transfer size select bit
6 SADSL4
DMA4 source address direction select bit
7 DADSL4
DMA4 destination address direction select bit
Note 1: Only writing "0" is effective. Writing "1" has no effect; the bit retains the value it had before the write.
DMA4 Channel Control Register 1 (DM4CNT1)
b8 9 10
0 0 0
b Bit Name
8–11 No function assigned. Fix to "0".
12–15 REQESEL4
Extended DMA4 transfer request source select bit
3 4 5 6
TENL4 TSZSL4 SADSL4 DADSL4
0 0 0 0
11 12 13 14
REQESEL4
0 0 0 0
b7
0
Function
0: Normal mode
1: Ring buffer mode
0: Transfer not requested
1: Transfer requested
00: Software start
01: One DMA3 transfer completed
10: SIO0_RXD
11: Extended DMA4 transfer request source select
(DMA4 Channel Control Register 1)
0: Disable transfer
1: Enable transfer
0: 16 bits
1: 8 bits
0: Fixed
1: Increment
0: Fixed
1: Increment
b15
0
Function
0000: MJT(TIN19S)
0001: SIO0_TXD (transmit buffer empty)
0010: MJT(TOU1_7irq)
0011: Common 1) MJT (input event bus 1)
0100: Common 2) MJT (input event bus 3)
0101: Common 3) MJT (output event bus 2)
0110: Common 4) MJT (output event bus 3)
0111: Common 5) AD0 conversion completed
1000: Common 6) MJT (TIN0S)
1001: Common 7) MJT (TIO8_udf)
1010: Settings inhibited
| |
1111: Settings inhibited
9-10
9.2 DMAC Related Registers
<Address: H'0080 0450>
<After reset: H'00>
<Address: H'0080 0451>
<After reset: H'00>
32180 Group User's Manual (Rev.1.0)
DMAC
R W
R W
R(Note 1)
R W
R W
R W
R W
R W
R W
0 0
R W