ak4644 AKM Semiconductor, Inc., ak4644 Datasheet - Page 93

• Manufacturer Part Number: ak4644
• Description: Stereo Codec With Mic/hp/rcv-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
4. EXT Slave Mode
5. EXT Master Mode
Power supply current can be shut down (typ. 10µA) 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. 10µA) by stopping clocks and
setting PDN pin = “L”. When PDN pin = “L”, the registers are initialized.
MS0477-E-01
External LRCK
External MCKI
External MCKI
External BICK
Power down
<Example>
<Example>
LRCK
BICK
(1) Stop the external MCKI, BICK and LRCK clocks.
(1) Stop MCKI clock. BICK and LRCK are fixed to “H” or “L”.
Output
Output
Input
Input
Input
Input
(1)
(1)
(1)
(1)
Figure 86. Clock Stopping Sequence (4)
Figure 87. Clock Stopping Sequence (5)
"H" or "L"
"H" or "L"
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Example
Example
Input MCKI frequency:1024fs
Input MCKI frequency:1024fs
Audio I/F Format :MSB justified(ADC & DAC)
Audio I/F Format :MSB justified(ADC & DAC)
(1) Stop the external clocks
(1) Stop the external MCKI
[AK4644]
2006/10