TPA2012D2 datasheet(26/43 Pages) TI2

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TPA2026D2

SLOS649B – MARCH 2010 – REVISED MAY 2016

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The default register map values are given in Table 5.

Table 5. TPA2026D2 Default Register Values

0x01

0x02

0x03

0x04

0x05

0x06

0x07

Default

C3h

05h

0Bh

00h

06h

3Ah

C2h

Any register above address 0x08 is reserved for testing and must not be written to because it may change the

function of the device. If read, these bits may assume any value.

Some of the default values can be reprogrammed through the I2C interface and written to the EEPROM. This

function is useful to speed up the turnon time of the device and minimizes the number of I2C writes. If this is

required, contact your local TI representative.

The TPA2026D2 I2C address is 0xB0 (binary 10110000) for writing and 0xB1 (binary 10110001) for reading. If a

different I2C address is required, contact your local TI representative. See General I2C Operation for more

details.

The following tables show the details of the registers, the default values, and the values that can be programmed

through the I2C interface.

9.6.1 IC Function Control (Address: 1)

Table 6. IC Function Control (Address: 1)

ADDRESS

I2C BIT

LABEL

DEFAULT

DESCRIPTION

01 (01H) – IC

Function Control

SPK_EN_R

1 (enabled)

Enables right amplifier

SPK_EN_L

1 (enabled)

Enables left amplifier

SWS

0 (enabled)

Shutdown IC when bit = 1

FAULT_R

Changes to a 1 when there is a short on the right channel. Reset by writing

a 0.

FAULT_L

Changes to a 1 when there is a short on the left channel. Reset by writing a

Thermal

Changes to a 1 when die temperature is above 150°C

UNUSED

NG_EN

1 (enabled)

Enables Noise Gate function

SPK_EN_R:

Enable bit for the right-channel amplifier. Amplifier is active when bit is high. This function is

gated by thermal and returns once the IC is below the threshold temperature.

SPK_EN_L:

Enable bit for the left-channel amplifier. Amplifier is active when bit is high. This function is

gated by thermal and returns once the IC is below the threshold temperature

SWS:

Software shutdown control. The device is in software shutdown when the bit is 1 (control, bias

and oscillator are inactive). When the bit is 0 the control, bias and oscillator are enabled.

FAULT_L:

This bit indicates that an over-current event has occurred on the left channel with a 1. This bit

is cleared by writing a 0 to it.

FAULT_R:

This bit indicates that an over-current event has occurred on the right channel with a 1. This bit

is cleared by writing a 0 to it.

Thermal:

This bit indicates a thermal shutdown that was initiated by the hardware with a 1. This bit is

deglitched and latched, and can be cleared by writing a 0 to it.

NG_EN:

Enable bit for the Noise Gate function. This function is enabled when this bit is high. This

function can only be enabled when the Compression ratio is not 1:1.

TPA2012D2 Datasheet(PDF) 26 Page - Texas Instruments

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