8x interpolator - switching characteristics, Figure 3. serial audio input timing, Cs4397 – Cirrus Logic CS4397 User Manual
Page 12
CS4397
12
DS333F1
8X INTERPOLATOR - SWITCHING CHARACTERISTICS
(T
A
= -10 to 70°C;
Logic 0 = AGND = DGND; Logic 1 = VD = 5.25 to 3.0 Volts; C
L
= 20 pF)
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.
Parameter
Symbol Min Typ
Max
Unit
Input Sample Rate
(Note 10)
Fs
128
-
400
kHz
MCLK Frequency (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
40
-
50
%
WCKI Duty Cycle
25
-
75
%
BCKI Frequency
32xFs
MHz
BCKI rising to WCKI edge delay
t
slrd
20
-
-
ns
BCKI rising to WCKI edge setup time
t
slrs
20
-
-
ns
SDATA valid to BCKI rising setup time
t
sdlrs
20
-
-
ns
BCKI rising to DIL/DIR hold time
t
sdh
20
-
-
ns
sclkh
t
slrs
t
slrd
t
sdlrs
t
sdh
t
sclkl
t
DIL/DIR
BCKI
WCKI
Figure 3. Serial Audio Input Timing