AK4645AEZ Datasheet, PDF (79/85 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP

[AK4645A]
2. ֎෦ΫϩοΫϞʔυͰ࢖༻͢Δ৔߹(ϚελϞʔυ)
Power Supply
PDN pin
PMVCM bit
(Addr:00H, D6)
MCKI pin
M/S bit
(Addr:01H, D3)
LRCK pin
BICK pin
(1)
(4)
(2)
(3)
Input
Output
Example:
Audio I/F Format: MSB justified (ADC and DAC)
Input MCKI frequency: 256fs
Sampling Frequency: 44.1kHz
(1) Power Supply & PDN pin = “L” Æ “H”
(2) MCKI input
(3) Addr:04H, Data:02H
Addr:05H, Data:00H
Addr:01H, Data:08H
BICK and LRCK output
(4) Addr:00H, Data:40H
Figure 70. Clock Set Up Sequence (5)
<खॱྫ>
(1) ޙ্ཱ͛ͪݯిɺPDN pin “L” Æ “H”ʹ͍ͯͩ͘͠͞ɻ͜ͷ۠ؒ͸AK4645AͷϦηοτͷͨΊɺ150ns
Ҏ্ͷ “L”͕۠ؒඞཁͰ͢ɻ
ͨͩ͠ɺి্ཱ࣌͛ͪݯͷϔουϑΥϯग़ྗ͓ΑͼϥΠϯग़ྗͷϙοϓϊΠζΛճආ͢Δʹ͸ʮγ
εςϜઃ( ܭάϥϯυͱిݯͷσΧοϓϦϯά)ʯʹࡌهͷਪ঑γʔέϯεΛࢀরͯ͠ಈ࡞ͤͯ͘͞
͍ͩ͞ɻ
(2) MCKIΛೖྗͯ͠Լ͍͞ɻ
(3) DIF1-0, FS1-0 bitsͷઃఆޙɺM/S bitΛ “1”ʹઃఆͯ͠Լ͍͞ɻLRCK͓ΑͼBICK͕ग़ྗ͞Ε·͢ɻ
(4) VCOMͷύϫʔΞοϓɿ PMVCM bit = “0” Æ “1”
֤ϒϩοΫΛ্ཱͪ͛Δલʹ࠷ॳʹVCOMΛ্ཱͪ͛ͯԼ͍͞ɻ
MS0986-J-00
- 79 -
2008/07