AK4645EN Datasheet, PDF (29/96 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP

ASAHI KASEI
[AK4645]
b) PLL ج४ΫϩοΫ: BICK or LRCK pin
FS3-0 bitsΛઃఆ͢Δ͜ͱͰɺ7.35kHz ∼ 48kHzͷ೚ҙͷαϯϓϦϯάप೾਺ʹରԠ͠·͢ɻ(See Table 7.)
AK4645
MCKO
MCKI
BICK
LRCK
SDTO
SDTI
DSP or µP
32fs or 64fs
1fs
BCLK
LRCK
SDTI
SDTO
Figure 21. PLL Slave Mode 2 (PLL Reference Clock: BICK pin)
AK4645
MCKO
MCKI
BICK
LRCK
SDTO
SDTI
≥ 32fs
1fs
DSP or µP
BCLK
LRCK
SDTI
SDTO
Figure 22. PLL Slave Mode 2 (PLL Reference Clock: LRCK pin)
ADC or DAC͕ಈ࡞த(PMADL bit = “1”, PMADR bit = “1” or PMDAC bit = “1”)͸֎෦ΫϩοΫ(MCKI, BICK,
LRCK)ΛࢭΊͯ͸͍͚·ͤΜɻ͜ΕΒͷΫϩοΫ͕͞څڙΕͳ͍৔߹ɺ಺෦ʹμΠφϛοΫͳϩδοΫΛ࢖
༻͍ͯ͠ΔͨΊɺաిྲྀ͕ྲྀΕɺಈ࡞͕ҟৗʹͳΔՄೳੑ͕͋Γ·͢ɻΫϩοΫΛࢭΊΔ৔߹͸ύϫʔμ΢
ϯঢ়ଶ(PMADL=PMADR=PMDAC bits = “0”)ʹ͍ͯͩ͘͠͞ɻ
MS0543-J-00
- 29 -
2006/09