AK4642EN Datasheet, PDF (73/83 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4642EN]
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: 1024fs
Sampling Frequency: 8kHz
MCKO: Disable
(1) Power Supply & PDN pin = “L” Æ “H”
(4)
Input
(4)
Input
(2) Addr:04H, Data:02H
Addr:05H, Data:01H
(3) Addr:00H, Data:40H
MCKI, BICK and LRCK input
Figure 50. Clock Set Up Sequence (4)
<Example>
(1) After Power Up: PDN pin “L” Æ “H”
“L” time of 150ns or more is needed to reset the AK4642.
(2) DIF1-0 and FS1-0 bits should be set during this period.
(3) Power Up VCOM: PMVCM bit = “0” Æ “1”
VCOM should first be powered up before the other block operates.
(4) Normal operation starts after the MCKI, LRCK and BICK are supplied.
MS0420-E-00
- 73 -
2005/09