ak4648 AKM Semiconductor, Inc., ak4648 Datasheet - Page 116

• Manufacturer Part Number: ak4648
• Description: Stereo Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

4. EXT Slave Mode
5. EXT Master Mode
■
Power supply current can be shut down (typ. 1 μ A) 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. 1 μ A) by stopping clocks and
setting PDN pin = “L”. When PDN pin = “L”, the registers are initialized.
MS0625-E-01
External LRCK
External MCKI
External BICK
External MCKI
<Example>
<Example>
Power down
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 84. Clock Stopping Sequence (4)
Figure 85. 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)
Sampling Frequency: 44.1kHz
Sampling Frequency: 44.1kHz
(1) Stop the external clocks
(1) Stop the external MCKI
[AK4648]
2007/06