ak4644 AKM Semiconductor, Inc., ak4644 Datasheet - Page 87

• Manufacturer Part Number: ak4644
• Description: Stereo Codec With Mic/hp/rcv-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
5. EXT Master Mode
MS0477-E-01
Power Supply
(Addr:00H, D6)
PMVCM bit
(Addr:01H, D3)
<Example>
LRCK pin
BICK pin
MCKI pin
PDN pin
M/S bit
(1) After Power Up: PDN pin “L”
(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”
“L” time of 150ns or more is needed to reset the AK4644.
VCOM should first be powered up before the other block operates.
(1)
(2)
(3)
(4)
Figure 78. Clock Set Up Sequence (5)
“H”
Output
Input
“1”
- 87 -
(1) Power Supply & PDN pin = “L”
Example:
Input MCKI frequency: 256fs
Sampling Frequency: 44.1kHz
MCKO: Disable
Audio I/F Format: MSB justified (ADC and DAC)
(3) Addr:04H, Data:02H
BICK and LRCK output
(4) Addr:00H, Data:40H
Addr:05H, Data:00H
Addr:01H, Data:08H
(2) MCKI input
“H”
[AK4644]
2006/10