AK4631 Datasheet, PDF (60/69 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

ASAHI KASEI
[AK4631]
4. ֎෦ΫϩοΫϞʔυͰ࢖༻͢Δ৔߹(εϨʔϒϞʔυ)
Power Supply
PDN pin
PMVCM bit
(Addr:00H, D6)
MCKPD bit
(Addr:01H, D2)
PMPLL bit
(Addr:01H, D0)
MCKI pin
FCK pin
BICK pin
(1)
(2) (3)
(4)
"L"
(5)
(5)
Input
Input
Example
Audio I/F Format:MSB justified (ADC and DAC)
Input MCKI frequency: 1024fs
Sampling Frequency:8kHz
MCKO: Disable
(1) Power Supply & PDN pin = “L” Æ “H”
(2) Addr:04H, Data:02H
Addr:05H, Data:01H
(3) Addr:00H, Data:40H
(4) Addr:01H, Data:00H
MCKI, BICK and FCK input
Figure 46. Clock Set Up Sequence (4)
<खॱྫ>
(1) ޙ্ཱ͛ͪݯిɺPDN pin “L” → “H”
(1)ͷ۠ؒ͸AK4631ͷϦηοτͷͨΊɺ150nsҎ্ͷ “L”͕۠ؒඞཁͰ͢ɻ
(2) ͜ͷ۠ؒʹɺDIF1-0, FS1-0 bitͷઃఆΛߦͬͯԼ͍͞ɻ
(3) VCOMͷύϫʔΞοϓɿ PMVCM bit = “0” → “1”
֤ϒϩοΫΛ্ཱͪ͛Δલʹ࠷ॳʹVCOMΛ্ཱͪ͛ͯԼ͍͞ɻ
(4) MCKI pinͷϓϧμ΢ϯͷղআ : MCKPD bit = “1” → “0”
PLLͷύϫʔμ΢ϯ: PMPLL bit = “0”
(5) MCKI, FCK, BICKΫϩοΫೖྗޙɺਖ਼ৗͳಈ࡞͕։࢝͠·͢ɻ
MS0317-J-01
- 60 -
2004/11