
[AK4683] 
MS0427-E-02 
2007/04 
- 13 - 
Parameter 
Audio Interface Timing (Slave Mode) 
Normal mode
BICKA (BICKB) Period 
BICKA (BICKB) Pulse Width Low 
Pulse Width High 
LRCKA (LRCKB) Edge to BICKA (BICKB) “
↑
” (Note 24) 
BICKA (BICKB) “
↑
” to LRCKA (LRCKB) Edge (Note 24) 
LRCKA (LRCKB) to SDTOA, SDTOB (MSB) 
BICKA (BICKB) “
↓
” to SDTOA, SDTOB 
SDTIA1-3, SDTIB Hold Time 
SDTIA1-3, SDTIB Setup Time
TDM 256 mode
BICKA Period 
BICKA Pulse Width Low 
Pulse Width High 
LRCKA Edge to BICKA “
↑
”    (Note 24) 
BICKA “
↑
” to LRCKA Edge    (Note 24) 
BICKA “
↓
” to SDTOA 
SDTIA1 Hold Time 
SDTIA1 Setup Time
TDM 128 mode
BICKA Period 
BICKA Pulse Width Low 
Pulse Width High 
LRCKA Edge to BICKA “
↑
”    (Note 24) 
BICKA “
↑
” to LRCKA Edge    (Note 24) 
BICKA “
↓
” to SDTOA  
SDTIA1-2 Hold Time 
SDTIA1-2 Setup Time
Audio Interface Timing (Master Mode) 
Normal mode
BICKA (BICKB) Frequency 
BICKA (BICKB) Duty 
BICKA (BICKB) “
↓
” to LRCKA (LRCKB) Edge 
BICKA (BICKB)“
↓
” to SDTO 
SDTIA1-3, B Hold Time 
SDTIA1-3, B Setup Time
TDM 256 mode
BICKA Frequency 
BICKA Duty                (Note 25) 
BICKA “
↓
” to LRCKA Edge 
BICKA “
↓
” to SDTOA 
SDTIA1 Hold Time 
SDTIA1 Setup Time
TDM 128 mode
BICKA Frequency 
BICKA Duty                (Note 26) 
BICKA “
↓
” to LRCKA Edge 
BICKA “
↓
” to SDTOA 
SDTIA1-2 Hold Time 
SDTIA1-2 Setup Time
Note 24. BICK rising edge must not occur at the same time as LRCK edge. 
Note 25. When MCLK2/XTI is 512fs, dBCK is guaranteed. When 384fs and 256fs, dBCK can not be guaranteed. 
Note 26. When MCLK2/XTI is 256fs, dBCK is guaranteed. When 128fs, dBCK can not be guaranteed. 
Symbol 
min 
81 
32 
32 
20 
20 
20 
20 
81 
32 
32 
20 
20 
10 
10 
81 
32 
32 
20 
20 
10 
10 
-20 
20 
20 
-12 
10 
10 
-12 
10 
10 
typ 
max 
20 
20 
Units
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
ns 
Hz 
% 
ns 
ns 
ns 
ns 
Hz 
% 
ns 
ns 
ns 
ns 
Hz 
% 
ns 
ns 
ns 
ns 
tBCK 
tBCKL 
tBCKH 
tLRB 
tBLR 
tLRS 
tBSD 
tSDH 
tSDS 
tBCK 
tBCKL 
tBCKH 
tLRB 
tBLR 
tBSD 
tSDH 
tSDS 
20 
tBCK 
tBCKL 
tBCKH 
tLRB 
tBLR 
tBSD 
tSDH 
tSDS 
20 
fBCK 
dBCK 
tMBLR 
tBSD 
tSDH 
tSDS 
fBCK 
dBCK 
tMBLR 
tBSD 
tSDH 
tSDS 
fBCK 
dBCK 
tMBLR 
tBSD 
tSDH 
tSDS 
64fs 
50 
20 
20 
256fs 
50 
12 
20 
128fs 
50 
12 
20