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AK4643 Datasheet, PDF (101/104 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP/RCV/SPK-AMP | |||
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ASAHI KASEI
[AK4643]
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
(1)
(1) Stop the external clocks
Figure 92. Clock Stopping Sequence (4)
<Example>
(1) Stop the external MCKI, BICK and LRCK clocks.
5. EXT Master Mode
External MCKI
(1)
Input
BICK
Output
"H" or "L"
Example
Audio I/F Format :MSB justified(ADC & DAC)
Input MCKI frequency:1024fs
LRCK
Output
"H" or "L"
(1) Stop the external MCKI
Figure 93. Clock Stopping Sequence (5)
<Example>
(1) Stop MCKI clock. BICK and LRCK are fixed to âHâ or âLâ.
 Power down
Power supply current can be shut down (typ. 10µA) by stopping clocks and setting PMVCM bit = â0â after all blocks
except for VCOM are powered-down. Power supply current can be also shut down (typ. 10µA) by stopping clocks and
setting PDN pin = âLâ. When PDN pin = âLâ, the registers are initialized.
MS0476-E-01
- 101 -
2006/10
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