AK5701 Datasheet, PDF (52/62 Pages) Asahi Kasei Microsystems – PLL & MIC-AMP 16-Bit Stereo ADC

ASAHI KASEI
[AK5701]
3. PLLεϨʔϒϞʔυͰ֎෦ΫϩοΫ(MCKI pin)Λ࢖༻͢Δ৔߹
Example:
Audio I/F Format: I2S
BCLK frequency at Master Mode: 64fs
Input Master Clock Select at PLL Mode: 11.2896MHz
MCKO: Enable
Sampling Frequency: 44.1kHz
Power Supply
PDN pin
PMVCM bit
(Addr:10H, D2)
MCKO bit
(Addr:16H, D2)
PMPLL bit
(Addr:11H, D0)
MCKI pin
MCKO pin
EXBCLK pin
EXLRCK pin
(1)
(2) (3)
(4)
(5)
Input
40msec(max)
(6)
(7)
(8)
Output
Input
(1) Power Supply & PDN pin = “L” Æ “H”
(2)Addr:11H, Data:10H
Addr:14H, Data:23H
Addr:15H, Data:2FH
(3)Addr:10H, Data:04H
(4)Addr:16H, Data:04H
Addr:11H, Data:11H
MCKO output start
EXBCLK and EXLRCK input start
Figure 47. Clock Set Up Sequence (3)
<खॱྫ>
(1) ޙ্ཱ͛ͪݯిɺPDN pin “L” Æ “H”
͜ͷ۠ؒ͸AK5701ͷϦηοτͷͨΊɺ150nsҎ্ͷ “L”͕۠ؒඞཁͰ͢ɻ
(2) ͜ͷ۠ؒʹɺDIF1-0, PLL3-0, FS3-0, BCKO1-0, M/S bitsͷઃఆΛߦͬͯԼ͍͞ɻ
(3) VCOMͷύϫʔΞοϓɿ PMVCM bit = “0” Æ “1”
֤ϒϩοΫΛ্ཱͪ͛Δલʹ࠷ॳʹVCOMΛ্ཱͪ͛ͯԼ͍͞ɻ
(4) MCKO ग़ྗͷઃఆ: MCKO bit = “1”
(5) PMPLL bit = “0” Æ “1”Λઃఆ͠ɺMCKI pinʹΫϩοΫ͕͞څڙΕͨޙɺPLLಈ࡞͕ελʔτ͠·͢ɻ
PLLͷϩοΫ࣌ؒ͸MCKI=12MHzͷͱ͖40ms(max)Ͱ͢(Table 4)ɻ
(6) PLL͕҆ఆޙɺMCKO pin ͔Βਖ਼ৗͳΫϩοΫ͕ग़ྗ͞Ε·͢ɻ
(7) ͜ͷ۠ؒͰ͸ɺMCKO pin ͔Βਖ਼ৗͰͳ͍ΫϩοΫ͕ग़ྗ͞Ε·͢ɻ
(8) MCKOΫϩοΫʹಉͨ͠ظEXBCLK, EXLRCKΫϩοΫΛೖྗ͍ͯͩ͘͠͞ɻ
MS0404-J-00
- 52 -
2005/08