VL-ADR-01 Reference Manual
1
Overview
The VL-ADR-01 is a USB-to-audio adapter board. The board uses a Texas Instruments
PCM2906C codec to bring audio capabilities to embedded single board computers lacking audio
capabilities. As shown in Figure 3, the board provides the following controls and outputs:
Three volume control switches (Volume Up, Volume Down, and Mute)
Two 3.5 mm line-level audio connectors (stereo line input and stereo line output)
One 12-pin (2x6) 2 mm connector for off-board routing of controls, inputs, and outputs
Integrator’s Note:
The stereo line level output is limited to driving a 10 kΩ impedance load. This output should be
connected to an external amplifier to drive either headphones or speakers.
Ordering Information
VL-ADR-01S, temperature range of -25 ºC to +85 ºC
Accessories
The board connects to a host using a 0.5 m, USB 2.0 A plug to Micro-B plug cable, VersaLogic
part number VL-CBR-0503.
Dimensions
Figure 1 shows the dimensions of the VL-ADR-01.
Figure 1. Board Dimensions
Operating System Support
The VL-ADR-01 is compatible with standard USB audio driver code, typically embedded within an
operating system. No additional driver software is needed or supplied with the VL-ADR-01.
