[AK4679]
Unit
Parameter
Symbol
min
typ
max
PCM Interface Timing (BICKB, SYNCB, SDTIB, SDTOB pins):
SYNCB Timing
Frequency
fs3
8
-
48
kHz
Serial Interface Timing at Short/long Frame Sync
BICKB Frequency
BICKB Period
fBCK3
tBCK3
tBCKL3
tBCKH3
tSYB3
tSYB3
tBSY3
tBSY3
tSYD3
tBSD3
tBSD3
tSDH3
tSDS3
tSYL3
tSYH3
128
244
100
100
40
40
40
40
-
-
-
25
25
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4096
-
-
-
-
-
-
-
60
60
60
-
-
-
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
BICKB Pulse Width Low
Pulse Width High
SYNCB Edge to BICKB “↓” (Note 58)
SYNCB Edge to BICKB “↑” (Note 59)
BICKB “↓” to SYNCB Edge (Note 58)
BICKB “↑” to SYNCB Edge (Note 59)
SYNCB to SDTOB (MSB) (Except Short Frame)
BICKB “↑” to SDTOB (BCKPB bit = “0”)
BICKB “↓” to SDTOB (BCKPB bit = “1”)
SDTIB Hold Time
SDTIB Setup Time
SYNCB Pulse Width Low
Pulse Width High
0.8 x tBCK3
0.8 x tBCK3
-
Serial Interface Timing at MSB justified and I2S
BICKB Frequency
fBCK3
tBCK3
tBCKL3
tBCKH3
tSYB3
tBSY3
tSYD3
tBSD3
tSDH3
tSDS3
256
312.5
130
130
50
50
-
-
50
50
45
-
-
-
-
-
-
-
-
-
3072
-
-
-
-
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
BICKB Period
BICKB Pulse Width Low
Pulse Width High
SYNCB Edge to BICKB “↑”
BICKB “↑” to SYNCB Edge
SYNCB to SDTOB (MSB) (Except I2S mode)
BICKB “↓” to SDTOB
SDTIB Hold Time
SDTIB Setup Time
-
80
80
-
-
55
-
50
SYNCB Duty Cycle
dSYC3
Note 58. MSBSB, BCKPB bits = “00” or “11”.
Note 59. MSBSB, BCKPB bits = “01” or “10”.
MS1402-E-06
2013/02
- 27 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
