[AK4675]
Parameter
Symbol
min
typ
max
Units
PCM Interface Timing (BICKA, SYNCA, SDTIA, SDTOA pins; Master Mode):
SYNCA Timing
Frequency
fs2
-
8
-
kHz
BICKA 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
SYNCA Edge to BICKA “↑” (Note 65)
SYNCA Edge to BICKA “↓” (Note 66)
BICKA “↑” to SDTOA (BCKPA bit = “0”)
BICKA “↓” to SDTOA (BCKPA bit = “1”)
SDTIA Hold Time
0.5 x tBCK2
0.5 x tBCK2 + 40
0.5 x tBCK2 − 40
tSYB2
tSYB2
tBSD2
tBSD2
tSDH2
tSDS2
tSYH2
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
-
SDTIA Setup Time
SYNCA Pulse Width High
Serial Interface Timing at MSB justified and I2S
BICKA “↓” to SYNCA Edge
SYNCA to SDTOA (MSB) (Except I2S mode)
BICKA “↓” to SDTOA
SDTIA Hold Time
SDTIA Setup Time
SYNCA Duty Cycle
tBCK2
tBSY2
tSYD2
tBSD2
tSDH2
tSDH2
dSYC2
-
-
-
-
-
40
70
70
-
-
-
ns
ns
ns
ns
ns
%
−40
−70
−70
50
50
-
50
Note 65. MSBSA, BCKPA bits = “00” or “11”.
Note 66. MSBSA, BCKPA bits = “01” or “10”.
MS0963-E-00
2008/05
- 30 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
