AK4631 Datasheet, PDF (14/69 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

ASAHI KASEI
[AK4631]
Parameter
EXT Slave Mode (Figure 11)
MCKI Frequency: 256fs
512fs
1024fs
Pulse Width Low
Pulse Width High
FCK Frequency (MCKI = 256fs)
(MCKI = 512fs)
(MCKI = 1024fs)
Duty Cycle
BICK Period
BICK Pulse Width Low
Pulse Width High
Audio Interface Timing (Figure 12)
FCK Edge to BICK “↑” (Note 26)
BICK “↑” to FCK Edge (Note 26)
FCK to SDTO (MSB) (Except I²S mode)
BICK “↓” to SDTO
SDTI Hold Time
SDTI Setup Time
Symbol
min
fCLK
fCLK
fCLK
tCLKL
tCLKH
fFCK
fFCK
fFCK
duty
tBCK
tBCKL
tBCKH
1.8816
3.7632
7.5264
0.4/fCLK
0.4/fCLK
7.35
7.35
7.35
45
312.5
130
130
tFCKB
50
tBFCK
50
tFSD
tBSD
tSDH
50
tSDS
50
typ
2.048
4.096
8.192
8
8
8
max
12.288
13.312
13.312
48
26
13
55
80
80
Note 23. Duty Cycle = “L ”෯ / ΫϩοΫप × ظ100
Note 24. MSBS, BCKP bits = “00” or “11”
Note 25. MSBS, BCKP bits = “01” or “10”
Note 26. ͜ͷ֨ن஋͸FCKͷΤοδͱBICKͷ“↑”͕ॏͳΒͳ͍Α͏ʹنఆ͍ͯ͠·͢ɻ
Units
MHz
MHz
MHz
ns
ns
kHz
kHz
%
ns
ns
ns
ns
ns
ns
ns
ns
ns
Parameter
Symbol
min
Control Interface Timing:
CCLK Period
tCCK
200
CCLK Pulse Width Low
tCCKL
80
Pulse Width High
tCCKH
80
CDTI Setup Time
tCDS
40
CDTI Hold Time
tCDH
40
CSN “H” Time
CSN “↓” to CCLK “↑”
CCLK “↑” to CSN “↑”
tCSW
150
tCSS
150
tCSH
50
Reset Timing
PDN Pulse Width
(Note 27)
tPD
150
PMADC “↑” to SDTO valid (Note 28)
tPDV
Note 27. AK4631͸PDN pin = “L”ͰϦηοτ͞Ε·͢ɻ
Note 28. PMADC bitΛ্ཱ͔ͪ͛ͯΒͷFCKΫϩοΫͷ“↑”ͷճ਺Ͱ͢ɻ
typ
1059
max
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
1/fs
MS0317-J-01
- 14 -
2004/11