CS4365
SWITCHING CHARACTERISTICS - PCM
Inputs: Logic 0 = GND, Logic 1 = VLS, C L = 20 pF.
RST pin Low Pulse Width
MCLK Frequency
MCLK Duty Cycle
Parameters
Symbol
Min
1
1.024
45
Max
-
55.2
55
Units
ms
MHz
%
Input Sample Rate - LRCK (Manual selection)
Input Sample Rate - LRCK (Auto detect)
LRCK Duty Cycle
SCLK Duty Cycle
SCLK High Time
SCLK Low Time
LRCK Edge to SCLK Rising Edge
SCLK Rising Edge to LRCK Falling Edge
SDIN Setup Time Before SCLK Rising Edge
SDIN Hold Time After SCLK Rising Edge
Single-Speed Mode
Double-Speed Mode
Quad-Speed Mode
Single-Speed Mode
Double-Speed Mode
Quad-Speed Mode
F s
F s
F s
Fs
Fs
Fs
t sckh
t sckl
t lcks
t lckd
t ds
t dh
4
50
100
4
84
170
45
45
8
8
5
5
3
5
54
108
216
54
108
216
55
55
-
-
-
-
-
-
kHz
kHz
kHz
kHz
kHz
kHz
%
%
ns
ns
ns
ns
ns
ns
Notes:
14. After powering up, RST should be held low until after the power supplies and clocks are settled.
15. See Tables 1 - 3 for suggested MCLK frequencies.
16. MSB of CH1 is always the second SCLK rising edge following LRCK rising edge.
LRCK
SCLK
SDINx
t lcks
t ds
t sckh
t dh
MSB
t sckl
MSB-1
Figure 1. Serial Audio Interface Timing
DS670F2
15
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