AK4671_10 Datasheet, PDF (156/166 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/RCV/HP-AMP

[AK4671]
4. EXT Slave Mode
External MCKI
Input
External BICK
Input
External LRCK
Input
(1)
Example
(1)
Audio I/F Format:MSB justified(ADC & DAC)
Input MCKI frequency:1024fs
Sampling Frequency:44.1kHz
(1)
(1) Stop the external clocks
Figure 120. Clock Stopping Sequence (4)
<Example>
(1) Stop the external MCKI, BICK and LRCK clocks.
5. EXT Master Mode
External MCKI
Input
BICK
Output
LRCK
Output
(1)
"H" or "L"
"H" or "L"
Example
Audio I/F Format:MSB justified(ADC & DAC)
Input MCKI frequency:1024fs
Sampling Frequency:44.1kHz
(1) Stop the external MCKI
Figure 121. Clock Stopping Sequence (5)
<Example>
(1) Stop MCKI clock. BICK and LRCK are fixed to “H” or “L”.
■ Power down
Power supply current can be shut down (typ. 20μA) 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 PDN pin = “L”. When the PDN pin = “L”, the registers are initialized.
MS0666-E-02
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2010/06