CS4365
SWITCHING CHARACTERISTICS - PCM
(Inputs: Logic 0 = GND, Logic 1 = VLS, C = 30 pF)
L
Parameters
Symbol
Min
Max
Units
RST pin Low Pulse Width
(Note 14)
1
-
ms
MCLK Frequency
1.024
45
55.2
55
MHz
%
MCLK Duty Cycle
(Note 15)
Input Sample Rate - LRCK (Manual selection)
Single-Speed Mode
Double-Speed Mode
Quad-Speed Mode
F
F
F
4
50
100
54
108
216
kHz
kHz
kHz
s
s
s
Input Sample Rate - LRCK (Auto detect)
Single-Speed Mode
Double-Speed Mode
Fs
Fs
Fs
4
84
170
54
108
216
kHz
kHz
kHz
Quad-Speed Mode
LRCK Duty Cycle
45
45
8
55
55
-
%
%
SCLK Duty Cycle
SCLK High Time
t
ns
ns
ns
ns
ns
ns
sckh
SCLK Low Time
t
8
-
sckl
lcks
lckd
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
t
5
-
t
5
-
t
3
-
ds
t
5
-
dh
Notes:
14. After powering up, RST should be held low until after the power supplies and clocks are settled.
15. See Tables 1 - 3 on page 20 for suggested MCLK frequencies.
LRCK
LRCK
SCLK
SDIN1
tlcks
tsckh
tsckl
t
t
lckd
t
t
sckh
t
lcks
lcks
sckl
SCLK
tds
t
t
tdh
MSB
ds
dh
SDINx
MSB
MSB-1
MSB-1
Figure 1. Serial Audio Interface Timing
Figure 2. TDM Serial Audio Interface Timing
14
DS670PP1
CIRRUS [ CIRRUS LOGIC ]
