AK7755EN_16 Datasheet, PDF (37/109 Pages) Asahi Kasei Microsystems – DSP with Mono ADC Stereo CODEC + Mic/Lineout Amp

[AK7755]
CONT06: DAC De-emphasis, DAC and DSP Input Format Settings
W R Name D7
D6
D5
D4
D3 D2
D1
D0
Default
C6h 46h CONT06 DEM[1] DEM[0] DIFDA[1] DIFDA[0] 0 DIF1[2] DIF1[1] DIF1[0] 00h
D7, D6: DEM[1:0]
DEM mode
0
1
2
3
DAC De-emphasis Setting (50/15μs)
DEM[1:0] Sampling Frequency fs
00
OFF
01
48kHz
10
44.1kHz
11
32kHz
(default)
D5, D4: DIFDA[1:0] DAC Input Format Select
DIFDA mode DIFDA[1:0]
Input Data Format
0
00
MSB justified (24-bit) (default)
1
01
LSB justified 24-bit
2
10
LSB justified 20-bit
3
11
LSB justified 16-bit
Set “00” for I²S Compatible, PCM Short and PCM Long formats.
Set “11” when BITFS[1:0] bits (CONT01: D5, D4) =2h (32fs).
Set “00” when connecting MIXOUT or DSP-DOUT4 to DAC input.
D2, D1, D0: DIF1[2:0] DSP DIN1 Input Format Select
DIF1 Mode DIF1[2:0] Input Data Format
0
000 MSB (24-bit)
(default)
1
001 LSB 24-bit
2
010 LSB 20-bit
3
011 LSB 16-bit
4
100 MSB 8-bit μ-Law
5
101 MSB 8-bit A-Law
6
110 N/A
7
111 N/A
Set “000” for I²S Compatible, PCM Short and PCM Long formats.
Set “011” when BITFS[1:0]=2h (32fs).
Write “0” into the “0” registers.
014006643-E-00
- 37 -
2014/10