ak4671 AKM Semiconductor, Inc., ak4671 Datasheet - Page 151

• Manufacturer Part Number: ak4671
• Description: Stereo Codec With Mic/rcv/hp-amp
• Manufacturer: AKM Semiconductor, Inc.

MS0666-E-00
Power Supply
PMVCM bit
(Addr:00H, D0)
5. EXT Master Mode
(Addr:02H, D1)
<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 FS2-0 bits are set, M/S bit should be set to “1”. Then LRCK and BICK are output.
(4) Power Up VCOM: PMVCM bit = “0”
VCOM should first be powered up before the other block operates.
The AK4671 should be operated as the recommended power-up/down sequence shown in “System Design
(Grounding and Power Supply Decoupling)” to avoid pop noise at the receiver output, headphone output and
lineout output.
(1)
(2)
(3)
(4)
Figure 113. Clock Set Up Sequence (5)
Output
Input
“H”. “L” time of 150ns or more is needed to reset the AK4671.
“1”
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(1) Power Supply & PDN pin = “L”
Example:
Input MCKI frequency: 256fs
MCKO: Disable
Audio I/F Format: MSB justified (ADC and DAC)
Sampling Frequency: 44.1kHz
(3) Addr:03H, Data:02H
BICK and LRCK output
(4) Addr:00H, Data:01H
Addr:01H, Data:00H
Addr:02H, Data:02H
(2) MCKI input
“H”
[AK4671]
2007/10