AK7750 Datasheet, PDF (41/77 Pages) Asahi Kasei Microsystems – Audio DSP with Built-in Hands-Free Phone Features

[ASAHI KASEI]
[AK7750]
7) CONT6 : DAC Setting etc
Command Code Name
D7
D6
D5
D4
D3
D2
D1
D0 Default
Write Read
6Ch 7Ch
CONT6
PS
DAF
SF1 SF0 SMUTE TEST TEST
X
0000_000x
CODEC
c D7:PSCODEC ADC, DAC power-down
0: normal operation
1: power –down ADC, and DAC
Note1) PDAD bit in the CONT2 register must be set to “1” when this bit is set to “1”.
Note 2) In a double or 4X speed mode, this bit, and PSAD bit must be set to “1”.
d D6: DAF Selection of DAC digital filter
0: DAC digital filter characteristics a) in page 17
1: DAC digital filter characteristics b) in page 17
The change must be set at system reset.
When the sample rate is set to 8kHz, DAF=”1” is recommended
e D5, D4: SF1, SF0 Selection of DAC soft mute cycle time
SF mode
SF1
SF0
0
0
0
1
0
1
2
1
0
3
1
1
f D3: SMUTE Soft Mute Selection
0 : normal operation
1 : DAC soft mute enable
g D2:TEST(SEL_MCLK)
0 : normal operation
1 : Test mode (do not use).
h D1:TEST(PLLSTBY)
0 : normal operation
1 : Test mode (do not use).
i D0 : set “0”.
1008 LRCLK cycle
4032 LRCLK cycle
504 LRCLK cycle
2016 LRCLK cycle
note) Under-lined set values in c ~ h above indicate the default values.
[MS0296-E-00]
41
2005/03