AK4636 Datasheet, PDF (16/105 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP

[AK4636]
Parameter
EXT Master Mode (Figure 4)
MCKI Frequency: 256fs
512fs
1024fs
Pulse Width Low
Pulse Width High
FCK Frequency (MCKI = 256fs)
(MCKI = 512fs)
(MCKI = 1024fs)
Duty Cycle
BICK: Period (BCKO1-0 bit = “00”)
(BCKO1-0 bit = “01”)
(BCKO1-0 bit = “10”)
Duty Cycle
Audio Interface Timing
DSP Mode: (Figure 5, Figure 6)
FCK “↑” to BICK “↑” (Note 23)
FCK “↑” to BICK “↓” (Note 24)
BICK “↑” to SDTO (BCKP bit = “0”)
BICK “↓” to SDTO (BCKP bit = “1”)
SDTI Hold Time
SDTI Setup Time
Except DSP Mode: (Figure 7)
BICK “↓” to FCK Edge
FCK to SDTO (MSB)
(Except I²S mode)
BICK “↓” to SDTO
SDTI Hold Time
SDTI Setup Time
Symbol
fCLK
fCLK
fCLK
tCLKL
tCLKH
fFCK
fFCK
fFCK
dFCK
tBCK
tBCK
tBCK
dBCK
tDBF
tDBF
tBSD
tBSD
tSDH
tSDS
tBFCK
tFSD
tBSD
tSDH
tSDS
min
1.8816
3.7632
7.5264
0.4/fCLK
0.4/fCLK
7.35
7.35
7.35
-
-
-
-
-
0.5 x tBCK−40
0.5 x tBCK−40
−70
−70
50
50
−40
−70
−70
50
50
typ
2.048
4.096
8.192
-
-
8
8
8
50
1/16fFCK
1/32fFCK
1/64fFCK
50
0.5 x tBCK
0.5 x tBCK
-
-
-
-
-
-
-
-
-
max
12.288
13.312
13.312
-
-
48
26
13
-
-
-
-
-
Units
MHz
MHz
MHz
ns
ns
kHz
kHz
kHz
%
ns
ns
ns
%
0.5 x tBCK+40 ns
0.5 x tBCK+40 ns
70
ns
70
ns
-
ns
-
ns
40
ns
70
ns
70
ns
-
ns
-
ns
Note 21. BICK rising edge must not occur at the same time as FCK edge.
Note 22. Duty Cycle = (the width of “L”)/(the period of clock)*100
Note 23. MSBS, BCKP bits = “00” or “11”
Note 24. MSBS, BCKP bits = “01” or “10”
MS1012-E-01
- 16 -
2010/08