PCM5121 datasheet(82/121 Pages) TI2

82 / 121 page

PCM5121, PCM5122

SLAS763C – AUGUST 2012 – REVISED OCTOBER 2018

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Product Folder Links: PCM5121 PCM5122

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This bit controls whether to ignore the SCK halt (static or frequency is lower than acceptable) detection. When

ignored an SCK halt will not cause a clock error.

Default value: 0

0: Regard SCK halt detection

1: Ignore SCK halt detection

IDCM

Ignore LRCK/BCK Missing Detection

This bit controls whether to ignore the LRCK/BCK missing detection. The LRCK/BCK need to be in low state

(not only static) to be deemed missing. When ignored an LRCK/BCK missing will not cause the DAC go into

powerdown mode.

Default value: 0

0: Regard LRCK/BCK missing detection

1: Ignore LRCK/BCK missing detection

DCAS

Disable Clock Divider Autoset

This bit enables or disables the clock auto set mode. When dealing with uncommon audio clock configuration,

the auto set mode must be disabled and all clock dividers must be set manually. Addtionally, some clock

detectors might also need to be disabled. The clock autoset feature will not work with PLL enabled in VCOM

mode. In this case this feature has to be disabled and the clock dividers must be set manually.

Default value: 0

0: Enable clock auto set

1: Disable clock auto set

IPLK

Ignore PLL Lock Detection

This bit controls whether to ignore the PLL lock detection. When ignored, PLL unlocks will not cause a clock

error. The PLL lock flag at Page 0 / Register 4, bit 4 is always correct regardless of this bit.

Default value: 0

0: PLL unlocks raise clock error

1: PLL unlocks are ignored

Table 83. Page 0 / Register 40

Dec

Hex

RSV

AFMT1

AFMT0

RSV

ALEN1

ALEN0

Reset Value

RSV

Reserved

Reserved. Do not access.

AFMT[1:0]

I2S Data Format

These bits control both input and output audio interface formats for DAC operation.

Default value: 00

00: I2S

01: TDM/DSP

10: RTJ

11: LTJ

ALEN[1:0]

I2S Word Length

These bits control both input and output audio interface sample word lengths for DAC operation.

Default value: 10

00: 16 bits

01: 20 bits

10: 24 bits

11: 32 bits

PCM5121 Datasheet(PDF) 82 Page - Texas Instruments

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