AK4637 Datasheet, PDF (93/96 Pages) Asahi Kasei Microsystems – 24bit Mono CODEC with MIC - SPK-AMP

[AK4637]
4. EXT Master Mode
External MCKI
BICK
(1)
Input
Output
"H" or "L"
Example
:^{Audio I/F Format: I2S Compatible (ADC & DAC)}
Input MCKI frequency: 256fs
(1) Stop the external MCKI
FCK
Output
"H" or "L"
Figure 78. Clock Stopping Sequence (4)
<Sequence>
(1) Stop an external master clock. BICK and FCK are fixed to “H” or “L”.
■ Power Down
Power supply current cannot be shut down by stopping clocks and setting PMVCM bit = “0”. Power supply
current can be shut down (typ. 1A) by stopping clocks and setting the PDN pin = “L”. When the PDN pin
= “L”, all registers are initialized.
015010680-E-00
- 93 -
2015/09