Data Sheet

THUNDERCOMM TurboX™ C40x SoM Datasheet
42
I2S interface frequencies
Interface
Frequency achieved
I2S1
24.57 MHz
I2S2
12.288 MHz
I2S3A
12.288 MHz
I2S3B
12.288 MHz
I2S5
24.57 MHz
I2S6
12.288 MHz
4.8 PDM
THE SoM PDM interfaces for primary and secondary digital microphones.
DMIC interfaces running at 9.6 MHz clock.
PDM interfaces timing
PDM interface timing
Parameter
Description
Min
Typica
l
Max
Units
Using internal SCK
T
DMIC clock period
163
-
1666
ns
t(LSU)
Data left setup time to the clock falling edge
5
-
-
ns
t(LH)
Data left hold time to the clock falling edge
0
-
-
ns
t(RSU)
Data right setup time to the clock rising edge
5
-
-
ns
t(RH)
Data right hold time to the clock falling edge
0
-
-
ns