AK4373 Datasheet, PDF (92/98 Pages) Asahi Kasei Microsystems – Low Power Stereo DAC with HP/SPK-Amp

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
[AK4373]
Example:
Audio I/F Format: MSB justified
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 75. 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 AK4373.
(2) MCKI must 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.
MS0991-E-00
- 92 -
2008/09