
16
DS792F2
CS43L22
Confidential Draft
3/4/10
SWITCHING SPECIFICATIONS - SERIAL PORT
Inputs: Logic 0 = DGND; Logic 1 = VL.
11. After powering up the CS43L22, RESET should be held low after the power supplies and clocks are
settled.
Parameters
Symbol
Min
Max
Units
RESET pin Low Pulse Width
1-
ms
MHz
MCLK Duty Cycle
45
55
%
Slave Mode
Sample Rate (LRCK)
Fs
kHz
LRCK Duty Cycle
45
55
%
SCLK Frequency
1/tP
-64Fs
Hz
SCLK Duty Cycle
45
55
%
LRCK Setup Time Before SCLK Rising Edge
ts(LK-SK)
40
-
ns
SDIN Setup Time Before SCLK Rising Edge
ts(SD-SK)
20
-
ns
SDIN Hold Time After SCLK Rising Edge
th
20
-
ns
Master Mode
Sample Rate (LRCK)
Fs
Hz
LRCK Duty Cycle
45
55
%
SCLK Frequency
SCLK=MCLK mode
1/tP
-
12.0000
MHz
MCLK=12.0000 MHz
1/tP
-68Fs
Hz
all other modes
1/tP
-64Fs
Hz
SCLK Duty Cycle
45
55
%
SDIN Setup Time Before SCLK Rising Edge
ts(SD-SK)
20
-
ns
SDIN Hold Time After SCLK Rising Edge
th
20
-
ns
//
ts(SD-SK)
MSB
MSB-1
LRCK
SCLK
SDIN
ts(LK-SK)
tP
th
Figure 3. Serial Audio Interface Timing