ak4671 AKM Semiconductor, Inc., ak4671 Datasheet - Page 150

• 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)
4. EXT Slave Mode
<Example>
LRCK pin
BICK pin
MCKI pin
PDN pin
(1) After Power Up, PDN pin = “L”
(2) DIF1-0 and FS1-0 bits should be set during this period.
(3) Power Up VCOM: PMVCM bit = “0”
(4) Normal operation starts after the MCKI, LRCK and BICK are supplied.
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)
(4)
Figure 112. Clock Set Up Sequence (4)
Input
Input
“H”. “L” time of 150ns or more is needed to reset the AK4671.
“1”
- 150 -
(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
MCKI, BICK and LRCK input
(2) Addr:03H, Data:02H
(3) Addr:00H, Data:01H
Addr:01H, Data:00H
“H”
[AK4671]
2007/10