Overview
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
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.
3.3 V
5V
LDO
EEPROM
PWM-OUT
1-2
HP
OSC
U
S
B
TAS1020B
I2C
TAS5548
TPA6138A2
I2S-IN
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
SLOU351B – October 2012 – Revised August 2013
Copyright © 2012–2013, Texas Instruments Incorporated
2
TAS5548-5558EVM