CS49400 datasheet(93/100 Pages) CIRRUS

93 / 100 page

Digital-audio PCM data input. This pin can act as a general-purpose input or output that can

be individually configured and controlled by DSPC. BIDIRECTIONAL - Default: INPUT

SDATAN2, GPIO26 — PCM Audio Input Data, General Purpose I/O

Digital-audio PCM data input. This pin can act as a general-purpose input or output that can

be individually configured and controlled by DSPC. BIDIRECTIONAL - Default: INPUT

SDATAN3, GPIO27 — PCM Audio Input Data, General Purpose I/O

Digital-audio PCM data input. This pin can act as a general-purpose input or output that can

be individually configured and controlled by DSPC. BIDIRECTIONAL - Default: INPUT

SCS — Host Serial SPI Chip Select

SPI mode active-low chip-select input signal. INPUT

SCCLK — Serial Control Port Clock

This pin serves as the serial SPI clock input. INPUT

SCDIN — SPI Serial Control Data Input

In SPI mode this pin serves as the data input pin. INPUT

SCDOUT, SCDIO — Serial Control Port Data Input and Output

In SPI mode this pin serves as the data output pin. BIDIRECTIONAL - Default: OUTPUT in

SPI mode

INTREQ — Control Port Interrupt Request

Open-drain interrupt-request output. This pin is driven low to indicate that DSPC has outgoing

control data and should be serviced by the host.

OPEN DRAIN I/O - Requires 3.3K Ohm Pull-Up

CS49400 Datasheet(PDF) 93 Page - Cirrus Logic