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AK4634EN Datasheet, PDF (13/94 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK -AMP
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[AK4634]
Parameter
Symbol
min
PLL Slave Mode (PLL Reference Clock: FCK pin) (Figure 6, Figure 7)
FCK: Frequency
fFCK
7.35
DSP Mode: Pulse Width High
tFCKH tBCK60
Except DSP Mode: Duty Cycle
duty
45
BICK: Period
tBCK 1/64fFCK
Pulse Width Low
tBCKL 0.4 x tBCK
Pulse Width High
tBCKH 0.4 x tBCK
PLL Slave Mode (PLL Reference Clock: BICK pin) (Figure 6, Figure 7)
FCK: Frequency
fFCK
7.35
DSP Mode: Pulse width High
tFCKH tBCK60
Except DSP Mode: Duty Cycle
duty
45
BICK: Period (PLL3-0 bit = “0001”)
tBCK
-
(PLL3-0 bit = “0010”)
tBCK
-
(PLL3-0 bit = “0011”)
tBCK
-
Pulse Width Low
tBCKL 0.4 x tBCK
Pulse Width High
tBCKH 0.4 x tBCK
PLL Slave Mode (PLL Reference Clock: MCKI pin) (Figure 8)
MCKI Input: Frequency
fCLK
11.2896
Pulse Width Low
fCLKL 0.4/fCLK
Pulse Width High
fCLKH 0.4/fCLK
MCKO Output:
Frequency
fMCK
-
Duty Cycle except fs=29.4kHz, 32kHz
dMCK
40
fs=29.4kHz, 32kHz (Note 20)
dMCK
-
FCK: Frequency
fFCK
8
DSP Mode: Pulse width High
tFCKH tBCK60
Except DSP Mode: Duty Cycle
duty
45
BICK: Period
tBCK 1/64fFCK
Pulse Width Low
tBCKL 0.4 x tBCK
Pulse Width High
tBCKH 0.4 x tBCK
Audio Interface Timing
DSP Mode: (Figure 9, Figure 10)
FCK “” to BICK “” (Note 21)
FCK “” to BICK “” (Note 22)
BICK “” to FCK “” (Note 21)
BICK “” to FCK “” (Note 22)
BICK “” to SDTO (BCKP bit= “0”)
BICK “” to SDTO (BCKP bit= “1”)
SDTI Hold Time
SDTI Setup Time
Except DSP Mode: (Figure 12)
FCK Edge to BICK “” (Note 23)
BICK “” to FCK Edge (Note 23)
FCK to SDTO (MSB) (Except I2S mode)
BICK “” to SDTO
SDTI Hold Time
SDTI Setup Time
tFCKB
tFCKB
tBFCK
tBFCK
tBSD
tBSD
tSDH
tSDS
0.4 x tBCK
0.4 x tBCK
0.4 x tBCK
0.4 x tBCK
-
-
50
50
tFCKB
50
tBFCK
50
tFSD
-
tBSD
-
tSDH
50
tSDS
50
typ
8
-
-
-
-
-
8
-
-
1/16fFCK
1/32fFCK
1/64fFCK
-
-
-
-
-
256 x fFCK
50
33
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
max
48
1/fFCKtBCK
55
1/16fFCK
-
-
48
1/fFCKtBCK
55
-
-
-
-
-
27.0
-
-
-
60
-
48
1/fFCKtBCK
55
1/16fFCK
-
-
-
-
-
-
80
80
-
-
-
-
80
80
-
-
Unit
kHz
ns
%
ns
ns
ns
kHz
ns
%
ns
ns
ns
ns
ns
MHz
ns
ns
kHz
%
%
kHz
ns
%
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MS0686-E-03
- 13 -
2014/10
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