9
DMAC
9-9
32180 Group User’s Manual (Rev.1.0)
DMA3 Channel Control Register 0 (DM3CNT0)
<Address: H’0080 0440>
1
2
3
4
5
6
b7
b0
SADSL3 DADSL3
MDSEL3 TREQF3
REQSL3
TENL3
TSZSL3
0
0
0
0
0
0
0
0
<After reset: H’00>
b
Bit Name
Function
R
W
0
MDSEL3
0: Normal mode
R
W
DMA3 transfer mode select bit
1: Ring buffer mode
1
TREQF3
0: Transfer not requested
R(Note 1)
DMA3 transfer request flag bit
1: Transfer requested
2, 3
REQSL3
00: Software start
R
W
DMA3 transfer request source select bit
01: SIO0_TXD (transmit buffer empty)
10: SIO1_RXD
11: Extended DMA3 transfer request source select
(DMA3 Channel Control Register 1)
4
TENL3
0: Disable transfer
R
W
DMA3 transfer enable bit
1: Enable transfer
5
TSZSL3
0: 16 bits
R
W
DMA3 transfer size select bit
1: 8 bits
6
SADSL3
0: Fixed
R
W
DMA3 source address direction select bit
1: Increment
7
DADSL3
0: Fixed
R
W
DMA3 destination address direction select bit
1: Increment
Note 1: Only writing "0" is effective. Writing "1" has no effect; the bit retains the value it had before the write.
DMA3 Channel Control Register 1 (DM3CNT1)
<Address: H’0080 0441>
9
10
11
12
13
14
b15
b8
REQESEL3
0
0
0
0
0
0
0
0
<After reset: H’00>
b
Bit Name
Function
R
W
8–11
No function assigned. Fix to "0".
0
0
12–15
REQESEL3
0000: MJT(TIN0)
R
W
Extended DMA3 transfer request source select bit
0001: One DMA2 transfer completed
0010: AD1 conversion completed
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
9.2 DMAC Related Registers
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Summary of Contents for M32R/ECU Series
Page 17: ...12 This page is blank for reasons of layout...
Page 712: ...CHAPTER 18 OSCILLATOR CIRCUIT 18 1 Oscillator Circuit 18 2 Clock Generator Circuit...
Page 794: ...CHAPTER 22 TYPICAL CHARACTERISTICS...
Page 796: ...APPENDIX 1 MECHANICAL SPECIFICAITONS Appendix 1 1 Dimensional Outline Drawing...
Page 798: ...APPENDIX 2 INSTRUCTION PROCESSING TIME Appendix 2 1 32180 Instruction Processing Time...
Page 802: ...APPENDIX 3 PROCESSING OF UNUSED PINS Appendix 3 1 Example Processing of Unused Pins...