Interfaces and Connectors
EBX-41 Reference Manual
45
WHILE (INP(SPISTATUS) AND &H1) = &H1: WEND
'DIO Input Data
PRINT HEX$(INP(SPIDATA1))
WEND
SYSTEM
Audio
The audio interface on the Copperhead is implemented using an Integrated Device Technology,
Inc. 92HD87 Audio Codec. This interface is Intel High Definition Audio compatible. Drivers are
available for most Windows-based and Linux operating systems. To obtain the most current
versions, consult the Copperhead product support page
.
The J29 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 breakout
board.
Table 20: VL-CBR-5013 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.