[AK4675]
Parameter
Symbol
min
typ
max
Units
PCM Interface Timing (BICKB, SYNCB, SDTIB, SDTOB pins; Master Mode):
SYNCB Timing
Frequency
fs2
-
8
-
kHz
BICKB Timing
Period (BCKO2 bit = “0”)
(BCKO2 bit = “1”)
Duty Cycle
tBCK2
tBCK2
dBCK2
-
-
-
1/(16fs2)
1/(32fs2)
50
-
-
-
kHz
kHz
%
Serial Interface Timing at Short/long Frame Sync
SYNCB Edge to BICKB “↑” (Note 67)
SYNCB Edge to BICKB “↓” (Note 68)
BICKB “↑” to SDTOB (BCKPB bit = “0”)
BICKB “↓” to SDTOB (BCKPB bit = “1”)
SDTIB Hold Time
0.5 x tBCK2
0.5 x tBCK2 + 40
0.5 x tBCK2 − 40
tSYB3
tSYB3
tBSD3
tBSD3
tSDH3
tSDS3
tSYH3
ns
ns
ns
ns
ns
ns
ns
0.5 x tBCK2
0.5 x tBCK2 + 40
0.5 x tBCK2 − 40
-
-
-
-
70
70
-
-
-
−70
−70
50
50
-
SDTIB Setup Time
SYNCB Pulse Width High
Serial Interface Timing at MSB justified and I2S
BICKB “↓” to SYNCB Edge
SYNCB to SDTOB (MSB) (Except I2S mode)
BICKB “↓” to SDTOB
SDTIB Hold Time
SDTIB Setup Time
SYNCB Duty Cycle
tBCK2
tBSY3
tSYD3
tBSD3
tSDH3
tSDH3
dSYC3
-
-
-
-
-
40
70
70
-
-
-
ns
ns
ns
ns
ns
%
−40
−70
−70
50
50
-
50
Note 67. MSBSB, BCKPB bits = “00” or “11”.
Note 68. MSBSB, BCKPB bits = “01” or “10”.
MS0963-E-00
2008/05
- 32 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
