ak4648 AKM Semiconductor, Inc., ak4648 Datasheet - Page 106

• Manufacturer Part Number: ak4648
• Description: Stereo Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

MS0625-E-01
Power Supply
(Addr:00H, D6)
PMVCM bit
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.
The AK4648 should be operated as the recommended power-up/down sequence shown in “System Design
(Grounding and Power Supply Decoupling)” to avoid the pop noise at the speaker output, lineout output, and
headphone output.
VCOM should first be powered up before the other block operates.
(1)
(2)
(3)
(4)
(4)
Figure 74. Clock Set Up Sequence (4)
Input
Input
“H”. “L” time of 150ns or more is needed to reset the AK4648.
“1”
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(1) Power Supply & PDN pin = “L”
Example:
Input MCKI frequency: 256fs
MCKO: Disable
Sampling Frequency: 44.1kHz
Audio I/F Format: MSB justified (ADC and DAC)
MCKI, BICK and LRCK input
(2) Addr:04H, Data:02H
(3) Addr:00H, Data:40H
Addr:05H, Data:00H
“H”
[AK4648]
2007/06