AK4950 Datasheet, PDF (15/106 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK/Cap-less VIDEO-AMP & mini DSP

Parameter
Symbol
PLL Slave Mode (PLL Reference Clock = BICK pin)
LRCK Input Timing
Frequency
fs
Duty
Duty
BICK Input Timing
Period
PLL3-0 bits = “0010”
tBCK
PLL3-0 bits = “0011”
tBCK
Pulse Width Low
tBCKL
Pulse Width High
tBCKH
External Slave Mode
MCKI Input Timing
Frequency 512fs
fCLK
1024fs
fCLK
Pulse Width Low
tCLKL
Pulse Width High
tCLKH
LRCK Input Timing
Frequency 512fs
fs
1024fs
fs
Duty
Duty
BICK Input Timing
Period
tBCK
Pulse Width Low
tBCKL
Pulse Width High
tBCKH
External Master Mode
MCKI Input Timing
Frequency 512fs
fCLK
1024fs
fCLK
Pulse Width Low
tCLKL
Pulse Width High
tCLKH
LRCK Output Timing
Frequency
fs
Duty Cycle
Duty
BICK Output Timing
Period
BCKO bit = “0”
tBCK
BCKO bit = “1”
tBCK
Duty Cycle
dBCK
min
7.35
45
-
-
0.4 x tBCK
0.4 x tBCK
3.7632
7.5264
0.4/fCLK
0.4/fCLK
7.35
7.35
45
312.5
130
130
3.7632
7.5264
0.4/fCLK
0.4/fCLK
7.35
-
-
-
-
typ
-
-
1/(32fs)
1/(64fs)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
50
1/(32fs)
1/(64fs)
50
[AK4950]
max
Unit
48
kHz
55
%
-
ns
-
ns
-
ns
-
ns
24.576
13.312
-
-
48
13
55
-
-
-
MHz
MHz
ns
ns
kHz
kHz
%
ns
ns
ns
24.576
13.312
-
-
48
-
-
-
-
MHz
MHz
ns
ns
kHz
%
ns
ns
%
MS1320-E-00
- 15 -
2011/10