AK4679EG Datasheet, PDF (214/220 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with DSP and MIC/RCV/HP/SPK/LINE-AMP

[AK4679]
3. EXT Slave Mode
(1)
External MCKI
Input
External BICK
(1)
Input
External LRCK
(1)
Input
Example
Audio I/F Format:MSB justified(ADC & DAC)
Input MCKI frequency:256fs
Sampling Frequency:44.1kHz
(1) Stop the external clocks
Figure 159. Clock Stopping Sequence (3)
<Example>
(1) Stop the external MCKI, BICK and LRCK clocks.
4. EXT Master Mode
(1)
External MCKI
Input
BICK
Output
LRCK
Output
"H" or "L"
"H" or "L"
Example
Audio I/F Format:MSB justified(ADC & DAC)
Input MCKI frequency:256fs
Sampling Frequency:44.1kHz
(1) Stop the external MCKI
Figure 160. Clock Stopping Sequence (4)
<Example>
(1) Stop MCKI clock. BICK and LRCK are fixed to “H” or “L”.
■ Power down
Power supply current can be shut down (typ. 50μA) by stopping clocks and setting PMVCM bit = “0” after all blocks
except for VCOM are powered-down. Power supply current can be also shut down (typ. 1μA) by stopping clocks and
setting the PDNA pin = “L”. When the PDNA pin = “L”, the registers are initialized.
MS1402-E-06
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2013/02