Cirrus Logic CS43122 - Manual (Page 18)

CS43122
18
AD1/CDIN
(Control Port Mode)
3 Address Bit 1 / Control Data Input (Input) - In 2 Wire Mode, AD1 is a chip
address bit. CDIN is the control data input line for the control port interface in SPI
mode.
SCL/CCLK
(Control Port Mode)
4 Serial Control Interface Clock (Input) - In 2 Wire Mode, SCL clocks the serial
control data into or from SDA/CDOUT.
In SPI mode, CCLK clocks the serial data into AD1/CDIN and out of SDA/CDOUT.
SDA/CDOUT
(Control Port Mode)
5 Serial Control Data I/O (Input/Output) - In 2 Wire Mode, SDA is a data input/out-
put. CDOUT is the control data output for the control port interface in SPI mode.
M1
(Control Port Mode)
14 Mode Select (Input) - This pin is not used in Control Port Mode and must be termi-
nated to ground.