AK5701 Datasheet, PDF (25/62 Pages) Asahi Kasei Microsystems – PLL & MIC-AMP 16-Bit Stereo ADC

ASAHI KASEI
[AK5701]
„ PLL Slave Mode (PMPLL bit = “1”, M/S bit = “0”)
MCKI, EXBCLK or EXLRCK pin΁ೖྗ͞ΕΔΫϩοΫΛج४ʹ಺෦ͷPLLʹͯAK5701ʹඞཁͳΫϩοΫΛ
ੜ੒͠·͢ɻPLLͷج४ΫϩοΫ͸ɺPLL3-0 bitʹͯઃఆ͢Δ͜ͱ͕Ͱ͖·͢(Table 4)ɻ
a) PLL ج४ΫϩοΫ: EXBCLK or EXLRCK pin
FS3-0 bitΛઃఆ͢Δ͜ͱͰɺ7.35kHz ∼ 48kHzͷ೚ҙͷαϯϓϦϯάप೾਺ʹରԠ͠·͢ɻ(See Table 6.)
AK5701
MCKI
EXBCLK
EXLRCK
SDTO
DSP or µP
32fs, 64fs
1fs
BCLK
LRCK
SDTI
Figure 20. PLL Slave Mode 1 (PLL Reference Clock: EXLRCK or EXBCLK pin)
b) PLL ج४ΫϩοΫ: MCKI pin
MCKOʹಉͨ͠ظEXBCLK, EXLRCKΛೖྗ͠·͢ɻMCKOͱEXLRCK͸ಉ͢ظΔඞཁ͕͋Γ·͕͢Ґ૬Λ
߹ΘͤΔඞཁ͸͋Γ·ͤΜɻϚελΫϩοΫग़ྗ(MCKO pin)͸PS1-0 bit (Table 9)Ͱઃఆ͞Εͨप೾਺Λग़ྗ
͠ɺMCKO bitͰON/OFFՄೳͰ͢ɻαϯϓϦϯάप೾਺͸ɺFS3-0 bitͰઃఆ͢Δ͜ͱ͕Ͱ͖·͢ɻ(See Table
5)
AK5701
11.2896MHz, 12MHz, 12.288MHz, 13MHz
13.5MHz, 19.2MHz, 24MHz, 26MHz, 27MHz
DSP or µP
MCKI
MCKO
EXBCLK
EXLRCK
256fs/128fs/64fs/32fs
≥ 32fs
1fs
MCLK
BCLK
LRCK
SDTO
SDTI
Figure 21. PLL Slave Mode 2 (PLL Reference Clock: MCKI pin)
ADC͕ಈ࡞த(PMADL bit = “1” or PMADR bit = “1”)͸֎෦ΫϩοΫ(MCKI, EXBCLK, EXLRCK)ΛࢭΊͯ͸͍
͚·ͤΜɻ͜ΕΒͷΫϩοΫ͕͞څڙΕͳ͍৔߹ɺ಺෦ʹμΠφϛοΫͳϩδοΫΛ࢖༻͍ͯ͠ΔͨΊɺա
ిྲྀ͕ྲྀΕɺಈ࡞͕ҟৗʹͳΔՄೳੑ͕͋Γ·͢ɻΫϩοΫΛࢭΊΔ৔߹͸ύϫʔμ΢ϯঢ়ଶ
(PMADL=PMADR bits = “0”)ʹ͍ͯͩ͘͠͞ɻ
MS0404-J-00
- 25 -
2005/08