APPOTECH CW6632B - Page 119

16 Integrated Interchip Sound (IIS) 113
CW6632B Bluetooth 3.0 Audio Player SOC Version 1.0.0
Copyright ©2015, www.appotech.com. All Rights Reserved.
Transfer out the data received,Data shift_in/shift_out by IO to IO;
TXRX_MOD:IIS data transfer work mode
00 = enable rx only
01 = enable tx only
10 = enable rx,tx at the same time
Register 16–3 IIS_CON2:write pending and error pending configuration
Position
7
6
5
4
3
2
1
0
Name
-
EXCEPT_
PND
TX_BUF_
EMP
TXRX_P
ND
RD_OV_
PND
WR_OV_
PND
RD_HF_P
ND
WR_HF_
PND
Default
-
0
0
0
0
0
0
0
Access
-
R/W
R/W
R/W
R/W
R/W
R/W
R/W
EXCEPT_PND:error flag.when ws be shorter suddenly, will cause some error.
R：0 = not error
1 = error
W：0 = clear
1 = not clear
TX_BUF_EPT: indicate tx buffer empty or not
R：0 = not empty,then CPU can not write data to send out
1 = empty, CPU can write another 2 samples to send out
TXRX_PND:Some sample data have been received in or sent out
R：0 = not done
1 = done
16bit data mode,then pending up after 2 Left & Right or 4 single left or 4 single right sample done
other bit data mode,after 1 left & right or 2 left or 2 right sample channel data done,pnding up
W：0 = clear
1 = not clear
RD_OV_PND:number of dma read is equal to (IIS_DMA_CNT0~1)
R：0 = not finish
1 = finish
W：0 = clear
1 = not clear
WR_OV_PND:number of dma write is equal to (IIS_DMA_CNT0~1)
R：0 = not finish
1 = finish
W：0 = clear
1 = not clear