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.
OSC
3.3 V
5 V
LDO
EEPROM
U
S
PWM-OUT
1-2
HP
I2C
B
TPA6138A2
TAS5548
TAS1020B
I2S-IN
Figure 2. Complete EVM Signal Path
1.1 TAS5548EVM Features
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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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