[AK4634]
Parameter
Symbol
min
typ
max
Units
EXT Slave Mode (Figure 11)
MCKI Frequency: 256fs
512fs
fCLK
fCLK
fCLK
tCLKL
tCLKH
fFCK
1.8816
3.7632
7.5264
0.4/fCLK
0.4/fCLK
7.35
2.048
12.288
MHz
MHz
MHz
ns
4.096
13.312
1024fs
8.192
13.312
Pulse Width Low
Pulse Width High
FCK Frequency (MCKI = 256fs)
(MCKI = 512fs)
(MCKI = 1024fs)
Duty Cycle
-
-
-
-
ns
8
8
8
-
48
26
13
55
-
kHz
kHz
%
fFCK
7.35
fFCK
7.35
duty
45
BICK Period
tBCK
tBCKL
tBCKH
312.5
130
-
ns
ns
ns
BICK Pulse Width Low
Pulse Width High
-
-
130
-
-
Audio Interface Timing (Figure 12)
FCK Edge to BICK “↑” (Note 21)
BICK “↑” to FCK Edge (Note 21)
FCK to SDTO (MSB) (Except I2S mode)
BICK “↓” to SDTO
tFCKB
tBFCK
tFSD
50
50
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
80
80
-
tBSD
tSDH
tSDS
-
SDTI Hold Time
50
50
SDTI Setup Time
-
MS0983-E-00
2008/07
- 12 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
