I2S-IN

I2C

OSC

PWM-OUT

1-2

HP

TAS1020B

TPA6138A2

TAS5548

EEPROM

LDO

5 V

3.3 V

U

S

B

Overview

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1

Overview

The EVM demonstrates the TAS5548 device from Texas Instruments. The TAS5548 is an 8-channel audio

processor with ASRC and PWM output. This EVM has two outputs (Left and Right channels) via 3.5-mm

headphone jack. For detailed information about the TAS5548 device, review the device data sheet

(SLES270).

Figure 1. TAS5548EVM Printed-Circuit Board

The EVM, together with other TI components on this board, is a 2.0-channel digital audio processor

system. The digital input (I2S) comes from USB port via the TAS1020B. The 2-channel outputs go to the

TPA6138A2, headphones amplifier.

Figure 2. Complete EVM Signal Path

1.1

TAS5548EVM Features

•

USB powered (~320 mA)

•

Audio streams from host PC

•

Small form factor for software development – portable

•

No jumpers or extensive setup time

2

TAS5548-5558EVM

SLOU351B – October 2012 – Revised August 2013

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