AK4634EN Datasheet, PDF (83/94 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK -AMP

[AK4634]
4. EXT Slave Mode
Power Supply
PDN pin
PMVCM bit
(Addr:00H, D6)
PMPLL bit
(Addr:01H, D0)
MCKI pin
FCK pin
BICK pin
(1)
(2) (3)
(4)
"L"
(5)
(5)
Input
Input
Example
A^:udio I/F Format:MSB justified (ADC and DAC)
Input MCKI frequency: 256fs
Sampling Frequency:48kHz
MCKO: Disable
(1) Power Supply & PDN pin = “L”  “H”
(2) Addr:04H, Data:02H
Addr:05H, Data:00H
(3) Addr:00H, Data:40H
MCKI, BICK and FCK input
Figure 64. Clock Set Up Sequence (4)
<Example>
(1) After Power Up: PDN pin “L” → “H”
“L” time (1) of 150ns or more is needed to reset the AK4634.
(2) DIF1-0 and FS1-0 bits should be set during this period.
(3) Power Up VCOM: PMVCM bit = “0” → “1”
VCOM should first be powered up before the other block operates.
(4) Power down PLL: PMPLL bit = “0”
(5) Normal operation starts after the MCKI, FCK and BICK are supplied.
MS0686-E-03
- 83 -
2014/10