Datasheet

User's Guide

SBAU195– September 2011

PCM2900C/2902C/2906CEVM-U

1 Description

The PCM2900C/2902C/2906CEVM-U (PCM290xCEVM-U) is an evaluation board for Texas Instruments'

newly developed USB interface codecs, the PCM2900C, PCM2902C, and PCM2906C. The PCM2900C

includes a PCM2900C device, a bus-powered USB codec without an S/PDIF interface. The PCM2902C

includes a PCM2902C device, a bus-powered USB codec with an S/PDIF interface. The PCM2906C

includes a PCM2906C device, a bus-powered (500 mA) USB codec with an S/PDIF interface. Each

evaluation board also includes operational amplifiers for line input/output buffers, a 3.3-V regulator, and a

USB connector.

For information about the differences between the PCM290xCEVM-U and the DEM-PCM290xB-EVM

demonstration fixtures, see Application Report SBFA020.

The USB connector is mounted on the PCM2900C/2902C/2906C printed circuit board (PCB). Connecting

a USB interface to this USB connector enables the evaluation of codec performance.

The PCM2900C/2902C/2906C operates from the 5-V bus power supply of the USB. A 3.3-V IC regulator

is mounted on the board to provide power for analog circuitry and optionally for the codec.

Stereo audio output and input are available on two stereo mini-jacks.

The PCM2900C/2902B/2906B support the following USB features:

• Fully compliant with USB2.0 specification

• Full-speed transceivers

• Partially-programmable descriptors

• USB adaptive mode for playback

• USB asynchronous mode for record

• Bus-powered

• Full-speed transceivers

SBAU195– September 2011 PCM2900C/2902C/2906CEVM-U

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