CS4525 datasheet(67/91 Pages) CIRRUS

67 / 91 page

DS726A1

CS4525

9.3

AUX Port Configuration (Address 03h)

9.3.1

Enable Aux Serial Port (EnAuxPort)

Default = 0

Function:

Controls the operation of the auxiliary serial port.

9.3.2

Delay & Warning Port Configuration (DlyPortCfg[1:0])

Default = 00

Function:

Controls the operation of the delay and warning port. See “Serial Audio Delay & Warning Input Port” on

page 42 for more information.

9.3.3

Aux/Delay Serial Port Digital Interface Format (AuxI²S/LJ)

Default = 0

Function:

Selects the serial audio interface format for the data on AUX_SDOUT, DLY_SDIN, DLY_SDOUT. The re-

quired relationship between the Left/Right clock, serial clock and serial data is defined by the Digital In-

terface Format and the options are detailed in the “Serial Audio Interfaces” on page 57.

9.3.4

Aux Serial Port Right Channel Data Select (RChDSel[1:0])

Default = 01

Function:

Selects the data to be sent over the right channel of the auxiliary port serial data output signal.

432

EnAuxPort

DlyPortCfg1

DlyPortCfg0

AuxI²S/LJ

RChDSel1

RChDSel0

LChDSel1

LChDSel0

EnAuxPort Setting

Auxiliary Port State

0 .......................................... Auxiliary port disabled.

1 .......................................... Auxiliary port enabled.

DlyPortCfg[1:0] Setting

Delay Port Configuration

00 ........................................ Port disabled.

01 ........................................ Port configured as serial audio delay interface.

10 ........................................ Port configured as an external thermal warning indicator for the foldback algorithm.

11......................................... Port disabled.

AuxI²S/LJ Setting

Auxiliary/Delay Port Serial Audio Interface Format

0 .......................................... Left-Justified, up to 24-bit.

1 .......................................... I²S, up to 24-bit.

RChDSel[1:0] Setting

Aux Serial Port Right Channel Output Data Source

00 ........................................ Channel A.

01 ........................................ Channel B.

10 ........................................ LFE Channel.

11......................................... Channel B crossover low-pass output.

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