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Interfaces and Connectors
VL-EPU-2610 Reference Manual
35
Audio
The audio interface on the Falcon is implemented using an Integrated Device Technology, Inc.
92HD87B1X5 audio codec. This interface is Intel High Definition Audio (HDA) compatible.
Drivers are available for most Windows-based and Linux operating systems. To obtain the most
current versions, consult the Falcon Product Support Page
.
The J8 main I/O connector provides the line-level stereo input and line-level stereo output
connection points. The outputs will drive most amplified PC speaker sets.
The following table shows the pinout of the audio connector J3 on the VL-CBR-5013/5014
breakout board.
Table 14: VL-CBR-5013/5014 J3 Audio Connector Pinout
J3
Pin
Signal
Name
Function
1
LINE_INL
Line-In Left
2
LINE_INR
Line-In Right
3
HDA_GND
HDA Ground
4
LINE_OUTL
Line-Out Left
5
LINE_OUTR
Line-Out Right
6
HDA_GND
HDA Ground
Note:
In Windows, the rear line-in audio input is configured by default as a microphone
input. To configure it for audio input, disable the microphone boost to eliminate
audio distortion.
Push-button Reset
Connector J8 includes an input for a push-button reset switch. Shorting J8 pin 40 to ground
causes the Falcon to reboot. This must be a mechanical switch or an open-collector or open-drain
active switch with less than a 0.5V low-level input when the current is 1 mA. There must be no
pull-up resistor on this signal.
This connector uses IEC 61000-4-2-rated TVS components to help protect against ESD damage.
A reset button is provided on the VL-CBR-5013/5014 breakout board. Terminal block J8 on the
breakout board also provides a reset signal on pin 1 and ground on pin 2.