AK4647VQ Datasheet, PDF (22/72 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP

ASAHI KASEI
[AK4647]
„ PLL Slave Mode (PMPLL bit = “1”, M/S bit = “0”)
MCKI, BICK or LRCK pin΁ೖྗ͞ΕΔΫϩοΫΛج४ʹ಺෦ͷPLLʹͯAK4647ʹඞཁͳΫϩοΫΛੜ੒͠
·͢ɻPLLͷج४ΫϩοΫ͸ɺPLL3-0 bitsʹͯઃఆ͢Δ͜ͱ͕Ͱ͖·͢(Table 4)ɻ
a) PLL ج४ΫϩοΫ: MCKI pin
MCKOʹಉͨ͠ظBICK, LRCKΛೖྗ͠·͢ɻMCKOͱLRCK͸ಉ͢ظΔඞཁ͕͋Γ·͕͢Ґ૬Λ߹ΘͤΔඞ
ཁ͸͋Γ·ͤΜɻϚελΫϩοΫग़ྗ(MCKO pin)͸PS1-0 bits (Table 9)Ͱઃఆ͞Εͨप೾਺Λग़ྗ͠ɺMCKO
bitͰON/OFFՄೳͰ͢ɻαϯϓϦϯάप೾਺͸ɺFS3-0 bitsͰઃఆ͢Δ͜ͱ͕Ͱ͖·͢ɻ(See Table 5)
AK4647
11.2896MHz, 12MHz, 12.288MHz
13.5MHz, 24MHz, 27MHz
DSP or μP
MCKI
MCKO
BICK
LRCK
256fs/128fs/64fs/32fs
≥ 32fs
1fs
MCLK
BCLK
LRCK
SDTO
SDTI
SDTI
SDTO
Figure 14. PLL Slave Mode 1 (PLL Reference Clock: MCKI pin)
MS0566-J-00
- 22 -
2006/11