CS4222
SWITCHING SPECIFICATIONS - SERIAL AUDIO INTERFACE
Parameters
RST Low Time
MCLK Frequency
MCLK Pulse Width High
MCLK = 512 Fs
MCLK = 384 Fs
MCLK = 256 Fs
MCLK = 512 Fs
MCLK = 384 Fs
MCLK = 256 Fs
Fs
Symbol
Min
10
1.014
10
21
31
10
21
31
4
-
t
sckh
t
sckl
(DSCK = 0)
(DSCK = 0)
(DSCK = 0)
(DSCK = 0)
(DSCK = 0)
t
lrckd
t
lrcks
t
ds
t
dh
t
dpd
40
40
20
40
25
25
-
Max
-
25.6
-
-
-
-
-
-
50
128xFs
-
-
-
-
-
-
1
--------------------- + 20
-
(384) Fs
Units
ms
MHz
ns
MCLK Pulse Width Low
ns
Input Sample Rate
SCLK Frequency
SCLK Pulse Width Low
SCLK Pulse Width High
SCLK rising to LRCK edge delay
SCLK rising to LRCK edge setup time
SDIN valid to SCLK rising setup time
SCLK rising to SDIN hold time
SCLK falling to SDOUT valid
kHz
Hz
ns
ns
ns
ns
ns
ns
s
LRCK
t lrckd
t lrcks
t sckh
t sckl
SCLK*
t sckw
SDIN
t lrpd
SDOUT
t ds
t dh
MSB
t dpd
MSB-1
*SCLK shown for DSCK = 0, SCLK inverted for DSCK = 1.
Figure 1. Serial Audio Interface Timing
DS236F1
9
CIRRUS [ CIRRUS LOGIC ]
