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AK4644 Datasheet, PDF (86/96 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP/RCV-AMP | |||
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ASAHI KASEI
[AK4644]
4. EXT Slave Mode
Power Supply
PDN pin
PMVCM bit
(Addr:00H, D6)
MCKI pin
LRCK pin
BICK pin
(1)
(2) (3)
Example:
Audio I/F Format: MSB justified (ADC and DAC)
Input MCKI frequency: 256fs
Sampling Frequency: 44.1kHz
MCKO: Disable
(1) Power Supply & PDN pin = âLâ Ã âHâ
(4)
Input
(4)
Input
(2) Addr:04H, Data:02H
Addr:05H, Data:00H
(3) Addr:00H, Data:40H
MCKI, BICK and LRCK input
Figure 77. Clock Set Up Sequence (4)
<Example>
(1) After Power Up: PDN pin âLâ Ã âHâ
âLâ time of 150ns or more is needed to reset the AK4644.
(2) DIF1-0 and FS1-0 bits should be set during this period.
(3) Power Up VCOM: PMVCM bit = â0â Ã â1â
VCOM should first be powered up before the other block operates.
(4) Normal operation starts after the MCKI, LRCK and BICK are supplied.
MS0477-E-01
- 86 -
2006/10
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