PCM1789 datasheet(30/39 Pages) TI

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PCM1789

SBAS451 – OCTOBER 2008.............................................................................................................................................................................................. www.ti.com

DEC

HEX

DAMS

RSV

DEMP1

DEMP0

MZSEL

RSV

AZRO

ZREV

DAMS

Digital attenuation mode

This bit selects the attenuation mode.

Default value: 0.

DAMS

Digital attenuation mode

Fine step: 0.5-dB step for 0 dB to –63 dB range (default)

Wide range: 1-dB step for 0 dB to –100 dB range

RSV

Reserved

Reserved; do not use.

DEMP[1:0]

Digital de-emphasis function/sampling rate control

These bits are used to disable and enable the various sampling frequencies of the digital

de-emphasis function.

Default value: 00.

DEMP

Digital de-emphasis function/sampling rate control

Disable (default)

48 kHz enable

44.1 kHz enable

32 kHz enable

MZSEL

AMUTEO/ZERO flag selection

This bit is used to select the function of the ZERO2 pin.

Default value: 0.

MZSEL

AMUTEO/ZERO flag selection

The ZERO2 pin functions as ZERO2 (default).

The ZERO2 pin functions as AMUTEO.

AZRO

Zero flag channel combination selection

This bit is used to select the zero flag channel combination for ZERO1 and ZERO2.

Default value: 0.

AZRO

Zero flag combination selection

Combination A: ZERO1 = left channel, ZERO2 = right channel (default)

Combination B: ZERO1 = left channel or right channel, ZERO2 = left channel and

right channel

ZREV

Zero flag polarity selection

This bit controls the polarity of the zero flag pin.

Default value: 0.

ZREV

Zero flag polarity selection

High for zero detect (default)

Low for zero detect

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