AK4673 Datasheet, PDF (105/107 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP and Touch Screen Controller

[AK4673]
4. EXT Slave Mode
External MCKI
External BICK
External LRCK
Input
Input
Input
(1)
Example
(1)
Audio I/F Format :MSB justified(ADC & DAC)
Input MCKI frequency:1024fs
Sampling Frequency:8kHz
(1)
(1) Stop the external clocks
Figure 96. Clock Stopping Sequence (4)
<Example>
(1) Stop the external MCKI, BICK and LRCK clocks.
5. EXT Master Mode
External MCKI
BICK
LRCK
Input
Output
Output
(1)
"H" or "L"
"H" or "L"
Example
Audio I/F Format :MSB justified(ADC & DAC)
Input MCKI frequency:1024fs
Sampling Frequency:8kHz
(1) Stop the external MCKI
Figure 97. 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.
MS0670-E-00
- 105 -
2007/09