APPOTECH CW6632B - Page 118

112 16.2 IIS Special Function Register
CW6632B Bluetooth 3.0 Audio Player SOC Version 1.0.0
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CH_SEL:
00 = both left & right channel transfer
01 = only left
10 = only right
11 = reserved
LTHWS:left channel to high WS
0 = left channel data to low level WS,right to high level
1 = left channel data to high level WS,right to low level
SMP_EDGE: sample edge
0 = right edge update data
1 = low edge update data
SLAVE: IIS work at slave or Master mode
0 = Master mode
1 = Slave mode
IIS_EN:IIS enable.
Register 16–2 IIS_CON1:
Position
7
6
5
4
3
2
1
0
Name
DMA_LOOP
SMP_SYNC
IIS_3W
OP_MOD
TXRX_MOD
Default
0
0
0
1
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
DMA_LOOP: IIS DMA data to memory, then DMA data out to IO
0 = not loop
1 = loop
SMP_SYNC: sample IIS_DI by IO or synchronization input
00 = sample IO （master mode recommended）
01 = sample synchronization IO input(master mode)
1x = sample delay value of synchronization IO (slave mode recommended)
IIS_3W: iis DI/DO separately or not
0 = not
1 = separately
OP_MOD:IIS data operation mode
00 = data source come from cpu manual read/write
01 = data source come by DMA(to or from memorys)
10 = data source come from internal DAC output
11 = data source come from IO and to IO;LOOP_OP;