CS4397
Address Bit 1 / Control Data Input - AD1/CDIN
Pin 3, Input
Function:
2
In I C mode, AD1 is a chip address bit. CDIN is the control data input line for the control port interface in
SPI mode.
Serial Control Interface Clock - SCL/CCLK
Pin 4, Input
Function:
2
In I C 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.
Serial Control Data I/O - SDA/CDOUT
Pin 5, Input/Output
Function:
2
In I C mode, SDA is a data input/output. CDOUT is the control data output for the control port interface in
SPI mode.
M1 - Mode Select
Pin 14, Input
Function:
This pin is not used in Control Port Mode and must be terminated to ground.
22
DS333F1
CIRRUS [ CIRRUS LOGIC ]
