Rosen Entertainment Systems LLC
8/30/2005
Rosen FMT. Part # 9100458
Interface / Pinout Definition
All control and audio is interfaced via a single connector JP1. It is
intended to connect to a control board allowing firmware to control the
channels selection as well as the power.
See the following table for a pin description and definition:
FMT JP1 Pin Definitions
Pin #
Signal
Name
Function/Description
1
+5V
This is the power to the FMT
2
AR_A
Right audio input
3
AL_A
Left Audio Input
4
GND
FMT Ground Reference
5
Load
Not used; held low
6
GND
FMT Ground Reference
7
SEL2_A
Counter clock; sets the output of the counter
8
SEL1_A
Counter Clear; resets the counter to 0
9
ANT
Not Used; for test purpose only.
Design considerations
-
The module is intended to interface to a control board that will
send the required command to select the desired channel. This
can be achieved using a simple push button switch interface
however the architecture of the interface enables the interface to
be controlled by a micro controller. Ideally you should develop
an interface that will provide feedback to the user, possibly by
way of an OSD, to indicate which channel the transmitter is
currently set to.
-
In order to disable the FM transmission as well as removing the
5VDC supply, the data lines (SEL2_A, SEL1_A, and Load) should
be held low.