CS4397
8X INTERPOLATOR - SWITCHING CHARACTERISTICS (T = -10 to 70°C;
A
Logic 0 = AGND = DGND; Logic 1 = VD = 5.25 to 3.0 Volts; C = 20 pF)
L
Parameter
Symbol
Min
Typ
Max
Unit
Input Sample Rate
MCLK Frequency
(Note 10)
Fs
128
-
400
kHz
(MCLK = 32×Fs)
(MCLK = 48×Fs)
(MCLK = 64×Fs)
(MCLK = 96×Fs)
4.096
6.144
8.192
12.288
-
-
-
-
12.8
19.2
25.6
28.4
MHz
MHz
MHz
MHz
MCLK Duty Cycle
WCKI Duty Cycle
BCKI Frequency
40
25
-
-
50
%
%
75
32xFs
MHz
ns
BCKI rising to WCKI edge delay
BCKI rising to WCKI edge setup time
SDATA valid to BCKI rising setup time
BCKI rising to DIL/DIR hold time
t
20
20
20
20
-
-
-
-
-
-
-
-
slrd
t
ns
slrs
t
ns
sdlrs
t
ns
sdh
Notes: 10. Fs refers to the input sample rate to the Digital-to-Analog converter, i.e. Fs = 44.1 kHz × 8 = 352.8 kHz.
WCKI
t
t
sclkh
slrs
t
slrd
t
sclkl
BCKI
t
t
sdh
sdlrs
DIL/DIR
Figure 3. Serial Audio Input Timing
12
DS333F1
CIRRUS [ CIRRUS LOGIC ]
