PCM3168APAPR datasheet(48/66 Pages) TI1

48 / 66 page

PCM3168A

SBAS452A – SEPTEMBER 2008 – REVISED JANUARY 2016

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Table 26. Register: ADC Input Phase

DEC

HEX

—

REVAD6

REVAD5

REVAD4

REVAD3

REVAD2

REVAD1

REVAD[6:1]

ADC Input phase select

These bits are used to control the phase of analog signal inputs.

Default value: 00 0000.

REVAD

ADC Input phase select

xx xxx0

ADC1 normal input

xx xxx1

ADC1 inverted input

xx xx0x

ADC2 normal input

xx xx1x

ADC2 inverted input

xx x0xx

ADC3 normal input

xx x1xx

ADC3 inverted input

xx 0xxx

ADC4 normal input

xx 1xxx

ADC4 inverted input

x0 xxxx

ADC5 normal input

x1 xxxx

ADC5 inverted input

0x xxxx

ADC6 normal input

1x xxxx

ADC6 inverted input

Table 27. Register: ADC Soft Mute

DEC

HEX

—

MUTAD6

MUTAD5

MUTAD4

MUTAD3

MUTAD2

MUTAD1

MUTAD[6:1]

ADC Soft Mute control

These bits are used to enable or disable the Soft Mute function for the corresponding ADC outputs, DOUT. The Soft Mute

function is incorporated into the digital attenuators.

When Mute is disabled (MUTAD[6:1] = 0), the attenuator and ADC operate normally. When Mute is enabled by setting

MUTAD[6:1] = 1, the digital attenuator for the corresponding output decreases from the current setting to infinite

attenuation with an s-curve responses and time set by ATSPAD.

By setting MUTAD[6:1] = 0, the attenuator increases to the last attenuation level with the s-curve response in same

manner as for decreasing levels. This provides pop and zipper noise-free muting for the ADC input.

The Soft Mute control uses the same digital attenuation level resource setting as the ADC. Mute control has priority over

the digital attenuation level setting.

Default value: 00 0000.

MUTAD

ADC Soft Mute control

xx xxx0

ADC1 Mute disabled

xx xxx1

ADC1 Mute enabled

xx xx0x

ADC2 Mute disabled

xx xx1x

ADC2 Mute enabled

xx x0xx

ADC3 Mute disabled

xx x1xx

ADC3 Mute enabled

xx 0xxx

ADC4 Mute disabled

xx 1xxx

ADC4 Mute enabled

x0 xxxx

ADC5 Mute disabled

x1 xxxx

ADC5 Mute enabled

0x xxxx

ADC6 Mute disabled

1x xxxx

ADC6 Mute enabled

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