AK4631 Datasheet, PDF (22/69 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

ASAHI KASEI
[AK4631]
ػೳઆ໌
„ γεςϜΫϩοΫ


֎෦ͱͷI/FϞʔυ͸ҎԼͷ4௨Γͷํ๏͕͋Γ·͢ɻʢSee Table 1 and Table 2ʣ
Mode
PMPLL bit M/S bit PLL3-0 bit
PLL Master Mode
1
1
See Table 4
PLL Slave Mode 1
(PLL Reference Clock: MCKI pin)
1
0
See Table 4
PLL Slave Mode 2
(PLL Reference Clock: FCK or BICK pin)
1
0
See Table 4
EXT Slave Mode
0
0
X
Don’t Care (Note 29)
0
1
X
Table 1. Clock Mode Setting (X: Don’t care)
MCKPD bit
0
0
1
0
X
Figure
Figure 18
Figure 19
Figure 20
Figure 21
-
Note 29. ΫϩοΫϞʔυઃఆͷ౎߹্ɺ͜ͷϞʔυΛ௨ա͢Δ۠ؒͰ͸ɺMCKO, FCK, BICK ͔Βਖ਼ৗͰͳ͍प೾਺
ͷΫϩοΫ͕ग़ྗ͞Ε·͢ɻ
Mode
PLL Master Mode
PLL Slave Mode 1
(PLL Reference Clock: MCKI pin)
MCKO bit MCKO pin MCKI pin
BICK pin
0
1
“L” Output
256fs Output
Master Clock
Input for PLL
(Note 30)
16fs/32fs/64fs
Output
0
1
“L” Output
256fs Output
Master Clock
Input for PLL
(Note 30)
16fs/32fs/64fs
Input
FCK pin
1fs
Output
1fs
Input
PLL Slave Mode 2
(PLL Reference Clock: FCK or BICK pin)
0
“L” Output
GND
16fs/32fs/64fs
Input
EXT Slave Mode
256fs/
0
“L” Output
512fs/
1024fs
Input
≥ 32fs
Input
Note 30. 11.2896MHz/12MHz/12.288MHz/13.5MHz/24MHz/27MHz
Table 2. Clock pins state in Clock Mode
1fs
Input
1fs
Input
[MCKIͷϓϧμ΢ϯ఍߅ʹ͍ͭͯ]
ϚελΫϩοΫΛೖྗ͢Δ࣌͸ɺMCKPD bit = “0”ʹͯ͠Լ͍͞ɻೖྗ͕ϑϩʔςΟϯάʹͳΔͱ͖͸MCKPD
bit = “1” (Default) ʹͯ͠ɺ25kЊ (typ) Ͱ಺෦ϓϧμ΢ϯ͠·͢ɻ
MCKI
MCKPD bit ="0"
25kΩ
AK4631
Figure 17. Pull-down resistor of MCKI pin
MS0317-J-01
- 22 -
2004/11