UPD30181 Datasheet, PDF (151/444 Pages) NEC – 64-/32-Bit Microprocessor

CHAPTER 7 DMA CONTROL UNIT (DCU)
7.2.9 MICDMACFGREG (0x0A00 065E)
Bit
Name
R/W
At reset
15
Reserved
R
0
14
MicDsize1
R
0
13
MicDsize0
R
1
12
11
MicSrctype MicDestype
R
R
1
0
10
Reserved
R
0
9
Reserved
R
0
8
MicLoad
R/W
0
Bit
Name
R/W
At reset
7
Reserved
R
0
6
Reserved
R
0
5
Reserved
R
0
4
Reserved
R
0
3
Reserved
R
0
2
Reserved
R
0
1
Reserved
R
0
0
Reserved
R
0
Bit
15
14, 13
Name
Reserved
MicDsize(1:0)
12
MicSrctype
11
MicDestype
10, 9
8
Reserved
MicLoad
7 to 0
Reserved
Function
0 is returned after a read.
Indicates Microphone channel data size
01 : 16 bits
Values other than above do not appear.
Indicates Microphone channel source address type
1 : I/O
0 does not appear.
Indicates Microphone channel destination address type
0 : Memory
1 does not appear.
0 is returned after a read.
DMA auto-stop/auto-load mode setting for Microphone channel
0 : Auto-stop
1 : Auto-load
When this bit is set to 1, the DCU automatically begins transferring data to the
secondary buffer when the primary buffer is full.
When this bit is set to 0, the DCU uses the primary buffer only.
0 is returned after a read.
User’s Manual U14272EJ3V0UM
151