AK4643 Datasheet, PDF (93/104 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP/RCV/SPK-AMP

ASAHI KASEI
5. EXT Master Mode
Power Supply
PDN pin
PMVCM bit
(Addr:00H, D6)
MCKI pin
M/S bit
(Addr:01H, D3)
LRCK pin
BICK pin
(1)
(4)
(2)
(3)
Input
Output
[AK4643]
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 = “L” Æ “H”
(2) MCKI input
(3) Addr:04H, Data:02H
Addr:05H, Data:00H
Addr:01H, Data:08H
BICK and LRCK output
(4) Addr:00H, Data:40H
Figure 82. Clock Set Up Sequence (5)
<Example>
(1) After Power Up: PDN pin “L” Æ “H”
“L” time of 150ns or more is needed to reset the AK4643.
(2) MCKI should be input.
(3) After DIF1-0 and FS1-0 bits are set, M/S bit should be set to “1”. Then LRCK and BICK are output.
(4) Power Up VCOM: PMVCM bit = “0” Æ “1”
VCOM should first be powered up before the other block operates.
MS0476-E-01
- 93 -
2006/10