TAS2553_15 datasheet(33/58 Pages) TI

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TAS2553

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SLAS978B – SEPTEMBER 2013 – REVISED FEBRUARY 2014

7.5.5 Register 0x03: Configuration Register 3

READ /

BIT

NAME

DEFAULT

DESCRIPTION

WRITE

ANALOG_IN_SEL

R/W

Selects analog in path for data to class-D. When set to zero (digital in), no

signal should be present on the analog terminals.

0 = Digital Audio Input

1 = Analog Audio Input

I2S_OUT_SEL

R/W

Selects between PDM and I2S for I/V Sense output data format.

0 = PDM

1 = I2S

PDM_IN_SEL

R/W

Selects PDM as input to modulator

0 = PDM is not selected

1 = PDM is selected only if Digital Audio Input is selected (Reg 0x03 D[7] =

4-3

DIN_SOURCE_SEL

R/W

DIN Source Select

00 = Modulator input muted

01 = Use left stream for modulator

10 = Use right stream for modulator

11 = Use average of left and right streams for modulator

2-0

WCLK_FREQ

R/W

000

WCLK Frequency

000 = 8 kHz

001 = 11.025 kHz / 12 kHz

010 = 16 kHz

011 = 22.05 kHz / 24 kHz

100 = 32 kHz

101 = 44.1 kHz / 48 kHz

110 = 88.2 kHz / 96 kHz

111 = 176.4 kHz / 192 kHz

7.5.6 Register 0x04: DOUT Tristate Mode

For systems with multiple devices sharing a common DOUT line with a TDM interface mode, set Bit 2 to 1 to

ensure DOUT stays in high-impedance tri-state mode when it is not transmitting data.

READ /

BIT

NAME

DEFAULT

DESCRIPTION

WRITE

7-3

R/W

0000 0

Reserved. Write only default values.

SDOUT_TRISTATE

R/W

DOUT Tri-state Mode (for I2S mode only, see Reg 0x03, bit 7)

0 = DOUT set to logic low when not transmitting data

1 = DOUT in tristate when not transmitting data

1-0

R/W

Reserved. Write only default values.

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