AK4955 Datasheet, PDF (15/117 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK/Cap-less VIDEO-AMP/ LDO & DSP

[AK4955]
SWITCHING CHARACTERISTICS
(Ta =25°C; AVDD = 2.7 ~ 3.6V, DVDD = 1.6 ~ 2.0V, LVDD=2.7~5.5V, SVDD = 2.7~5.5V, TVDD = DVDD-0.2∼
3.6V; C_L=20pF)
Parameter
Symbol
min
typ
max
Unit
PLL Master Mode (PLL Reference Clock = MCKI pin)
MCKI Input Timing
Frequency
fCLK
11.2896
-
27
MHz
Pulse Width Low
tCLKL 0.4/fCLK
-
-
ns
Pulse Width High
tCLKH 0.4/fCLK
-
-
ns
MCKO Output Timing
Frequency
fMCK
0.256
-
12.288 MHz
Duty Cycle
dMCK
40
50
60
%
LRCK Output Timing
Frequency
fs
8
-
48
kHz
Duty Cycle
Duty
-
50
-
%
BICK Output Timing
Period
BCKO bit = “0”
tBCK
-
1/(32fs)
-
ns
BCKO bit = “1”
tBCK
-
1/(64fs)
-
ns
Duty Cycle
dBCK
-
50
-
%
PLL Slave Mode (PLL Reference Clock = MCKI pin)
MCKI Input Timing
Frequency
fCLK
11.2896
-
27
MHz
Pulse Width Low
tCLKL 0.4/fCLK
-
-
ns
Pulse Width High
tCLKH 0.4/fCLK
-
-
ns
MCKO Output Timing
Frequency
fMCK
0.256
-
12.288 MHz
Duty Cycle
dMCK
40
50
60
%
LRCK Input Timing
Frequency
fs
8
-
48
kHz
Duty
Duty
45
-
55
%
BICK Input Timing
Period
tBCK
1/(64fs)
-
1/(32fs)
ns
Pulse Width Low
tBCKL 0.4 x tBCK
-
-
ns
Pulse Width High
tBCKH 0.4 x tBCK
-
-
ns
MS1343-E-00
- 15 -
2011/12