User's Manual

SAM-200-TR Steaming Audio Module 7 Ver. 0.12j 12/22/2009
PRELIMINARY USER MANUAL SUBJECT TO CHANGE WITHOUT NOTICE
Copyright © 2009 Aerielle, LLC All Rights Reserved.
know what the audio source is playing so you can identify it on the receiver.) This line is pulled up
internally, and the channel advances each time it transitions to ground. The input is debounced internally
to allow the use of a simple electromechanical pushbutton switch.
The CH0, CH1, and CH2 lines provide for direct selection of the channel. Use these lines to select the
channel from a microcontroller or when you want to hard-wire a particular channel other than the
default. These lines are pulled up internally so they must be pulled down to select. See the following
table that shows active-low binary selection. In this way, Channel 0 (all lines high) is the default.
Channel Selection
Class Channel Address
CHSEL CH0 CH1 CH2
Channel Color*
X 1 1 1 Channel 1 (default) Red
X 1 1 0 Channel 2 Orange
X 1 0 1 Channel 3 Yellow
X 1 0 0 Channel 4 Green
X 0 1 1 Channel 5 Blue
X 0 1 0 Channel 6 Violet
X 0 0 1 Channel 7 White
X 0 0 0 Channel 8 undef.
1 X X X Consumer Class
0 X X X Professional Class
*The channel colors refer to those used on the i2i Stream
®
consumer device.
7. Volume Control/Mute
On the transceiver or dedicated receiver version of the module, there are simple function pins for volume
control and mute. These control the output volume in the headphone-drive mode.
VOLUP Transition to ground increases volume at headphone outputs by one step.
VOLDN Transition to ground decreases volume at headphone outputs by one step.
MUTE Ground mutes headphone output and floating or high-level input un-mutes it.