Switching characteristics - pcm, Figure 1. serial audio interface timing, Figure 2. tdm serial audio interface timing – Cirrus Logic CS4384 User Manual
Page 14: Cs4384 switching characteristics - pcm
14
DS620F1
CS4384
SWITCHING CHARACTERISTICS - PCM
(Inputs: Logic 0 = GND, Logic 1 = VLS, C
L
= 30 pF)
Notes:
14. After powering up, RST should be held low until after the power supplies and clocks are settled.
-
for suggested MCLK frequencies.
16. Not required for TDM Mode.
Parameters Symbol
Min
Max
Units
RST pin Low Pulse Width
1
-
ms
MCLK Frequency
1.024
55.2
MHz
MCLK Duty Cycle
45
55
%
Input Sample Rate - LRCK (Manual selection)
Single-Speed Mode
Double-Speed Mode
Quad-Speed Mode
F
s
F
s
F
s
4
50
100
54
108
216
kHz
kHz
kHz
Input Sample Rate - LRCK (Auto detect)
Single-Speed Mode
Double-Speed Mode
Quad-Speed Mode
Fs
Fs
Fs
4
84
170
54
108
216
kHz
kHz
kHz
LRCK Duty Cycle
45
55
%
SCLK Duty Cycle
45
55
%
SCLK High Time
t
sckh
8
-
ns
SCLK Low Time
t
sckl
8
-
ns
LRCK Edge to SCLK Rising Edge
t
lcks
5
-
ns
SCLK Rising Edge to LRCK Falling Edge
t
lckd
5
-
ns
SDIN Setup Time Before SCLK Rising Edge
t
ds
3
-
ns
SDIN Hold Time After SCLK Rising Edge
t
dh
5
-
ns
SDINx
t
ds
SCLK
LRCK
MSB
t
dh
t
sckh
t
sckl
t
lcks
MSB-1
Figure 1. Serial Audio Interface Timing
Figure 2. TDM Serial Audio Interface Timing
sckh
sckl
t
t
SD IN 1
dh
t
ds
t
lcks
t
lckd
t
SCLK
LR C K
lcks
t
M S B
M SB-1