CS4398
SWITCHING CHARACTERISTICS
(Inputs: Logic 0 = GND, Logic 1 = VLS, CL = 20 pF)
Parameters
Symbol
Min
Typ
Max
Units
Input Sample Rate
Single-Speed Mode
Double-Speed Mode
Quad-Speed Mode
Fs
Fs
Fs
30
50
100
-
-
-
54
108
216
kHz
kHz
kHz
MCLK Frequency
MCLK Duty Cycle
LRCK Duty Cycle
SCLK Pulse Width Low
SCLK Pulse Width High
SCLK Period
See Tables 1 & 2 (page 21) for compatible frequencies
40%
45%
20
-
50
-
60%
55%
t
-
-
ns
ns
sclkl
t
20
-
sclkh
Single-Speed Mode
Double-Speed Mode
Quad-Speed Mode
1
--------------------
t
t
t
-
-
-
-
-
-
ns
ns
ns
sclkw
(128)Fs
1
-----------------
sclkw
sclkw
(64)Fs
2
----------------
MCLK
SCLK rising to LRCK edge delay
t
20
20
22
20
-
-
-
-
-
-
-
-
ns
ns
ns
ns
slrd
SCLK rising to LRCK edge setup time
SDATA valid to SCLK rising setup time
SCLK rising to SDATA hold time
t
slrs
t
sdlrs
t
sdh
LRCK
t
t
sclkh
slrs
t
slrd
t
sclkl
SCLK
t
t
sdh
sdlrs
SDATA
Figure 2. Serial Mode Input Timing
12
DS568F1
CIRRUS [ CIRRUS LOGIC ]
