AK4953A Datasheet, PDF (83/96 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/HP/SPK-AMP

[AK4953A]
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 jusified (ADC and D AC)
Input MCKI frequency: 256fs
Sampling Frequency: 44.1kHz
(1) Power Supply & PDN pin = “L” Æ “H”
(4)
Input
(4)
Input
(2)Dummy command
Addr:05H, Data:02H
Addr:06H, Data:02H
(3) Addr:00H, Data:40H
MCKI, BICK and LRCK input
Figure 54. Clock Set Up Sequence (4)
<Example>
(1) After Power Up: PDN pin “L” → “H”
“L” time of 150ns or more is needed to reset the AK4953A.
(2) After Dummy Command input, DIF1-0, FS3-0 and DS bits must be set during this period.
(3) Power Up VCOM and Regulator: PMVCM bit = “0” → “1”
VCOM and Regulator must first be powered-up before the other block operates.
(4) Normal operation starts after the MCKI, LRCK and BICK are supplied.
MS1252-E-00
- 83 -
2010/10