Cirrus Logic CS43L21 - Manual (Page 8)

8 DS723F1
CS43L21
1.1 Digital I/O Pin Characteristics
The logic level for each input should not exceed the maximum ratings for the VL power supply.
Pin Name
SW/(HW)
I/O Driver Receiver
RESET Input - 1.8 V - 3.3 V
SCL/CCLK
(I²S/LJ)
Input - 1.8 V - 3.3 V, with Hysteresis
SDA/CDIN
(MCLKDIV2)
Input/Output 1.8 V - 3.3 V, CMOS/Open Drain 1.8 V - 3.3 V, with Hysteresis
AD0/CS
(DEM)
Input - 1.8 V - 3.3 V
MCLK Input - 1.8 V - 3.3 V
LRCK Input/Output 1.8 V - 3.3 V, CMOS 1.8 V - 3.3 V
SCLK Input/Output 1.8 V - 3.3 V, CMOS 1.8 V - 3.3 V
TSTO
(M/S)
Input/Output 1.8 V - 3.3 V, CMOS 1.8 V - 3.3 V
SDIN Input - 1.8 V - 3.3 V
Table 1. I/O Power Rails