AK4649 Datasheet, PDF (14/96 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK-AMP

[AK4649]
SWITCHING CHARACTERISTICS
(Ta = 25°C; AVDD=SVDD=2.4 ∼ 3.6V, DVDD =1.6 ∼ 3.6V; C_L=20pF)
Parameter
Symbol
min
PLL Master Mode (PLL Reference Clock = MCKI pin)
MCKI Input Timing
Frequency
fCLK
11.2896
Pulse Width Low
tCLKL 0.4/fCLK
Pulse Width High
tCLKH 0.4/fCLK
MCKO Output Timing
Frequency
fMCK
0.2352
Duty Cycle
Except 256fs at fs=32kHz, 29.4kHz
dMCK
40
256fs at fs=32kHz, 29.4kHz
dMCK
-
LRCK Output Timing
Frequency
fs
7.35
Duty Cycle
Duty
-
BICK Output Timing
Period
BCKO bit = “0”
tBCK
-
BCKO bit = “1”
tBCK
-
Duty Cycle
dBCK
-
PLL Slave Mode (PLL Reference Clock = MCKI pin)
MCKI Input Timing
Frequency
fCLK
11.2896
Pulse Width Low
tCLKL 0.4/fCLK
Pulse Width High
tCLKH 0.4/fCLK
MCKO Output Timing
Frequency
fMCK
0.2352
Duty Cycle
Except 256fs at fs=32kHz, 29.4kHz
dMCK
40
256fs at fs=32kHz, 29.4kHz
dMCK
-
LRCK Input Timing
Frequency
fs
7.35
Duty
Duty
45
BICK Input Timing
Period
tBCK
1/(64fs)
Pulse Width Low
tBCKL 0.4 x tBCK
Pulse Width High
tBCKH 0.4 x tBCK
typ
-
-
-
-
50
33
-
50
1/(32fs)
1/(64fs)
50
-
-
-
-
50
33
-
-
-
-
-
max
Units
27
-
-
12.288
60
-
48
-
-
-
-
MHz
ns
ns
MHz
%
%
kHz
%
ns
ns
%
27
-
-
12.288
60
-
48
55
1/(32fs)
-
-
MHz
ns
ns
MHz
%
%
kHz
%
ns
ns
ns
MS1023-E-01
- 14 -
2010/08