CS8427-CSZ datasheet(28/60 Pages) CIRRUS

28 / 60 page

CS8427

DS477F5

11. CONTROL PORT REGISTER BIT DEFINITIONS

11.1 Control 1 (01h)

SWCLK - Controls output of OMCK on RMCK when PLL loses lock

Default = ‘0’

0 - RMCK default function

1 - OMCK output on RMCK pin

VSET - Transmitted Validity bit level

Default = ‘0’

0 - Indicates data is valid, linear PCM audio data

1 - Indicates data is invalid or not linear PCM audio data

MUTESAO - Mute control for the serial audio output port

Default = ‘0’

0 - Not Muted

1 - Muted

MUTEAES - Mute control for the AES transmitter output

Default = ‘0’

0 - Not Muted

1 - Muted

INT1:INT0 - Interrupt output pin (INT) control

Default = ‘00’

00 - Active high; high output indicates interrupt condition has occurred

01 - Active low, low output indicates an interrupt condition has occurred

10 - Open drain, active low. Requires an external pull up resistor on the INT pin.

11 - Reserved

TCBLD - Transmit Channel Status Block pin (TCBL) direction specifier

Default = ‘0’

0 - TCBL is an input

1 - TCBL is an output

11.2 Control 2 (02h)

HOLD1:HOLD0 - Determine how received audio sample is affected when a receiver error occurs

Default = ‘00’

00 - Hold the last valid audio sample

01 - Replace the current audio sample with 00 (mute)

10 - Do not change the received audio sample

11 - Reserved

RMCKF - Select recovered master clock output pin frequency.

Default = ‘0’

0 - RMCK is equal to 256 * Fsi

1 - RMCK is equal to 128 * Fsi

SWCLK

VSET

MUTESAO

MUTEAES

INT1

INT0

TCBLD

HOLD1

HOLD0

RMCKF

MMR

MMT

MMTCS

MMTLR

CS8427-CSZ Datasheet(PDF) 28 Page - Cirrus Logic

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