Connect Systems CS-BFD, User Manual

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CS-BFD Operation
Board Jumpers
JP1 selects if the power to the unit is coming from an external
power supply plugged into the jack or from a radio.
JP2 is the Debug Connector for those advanced users who want to
modify the firmware.
JP3 is used for putting the unit in boot mode if the unit is bricked
JP4 selects if the backlit keys are on or off.
POWER
Power for the unit is supplied by the CS800D, CS800, or CS801
radio under normal conditions. Under certain conditions, the user
might want to power the radio either from a power supply or
directly from a car battery. This selection is done by a jumper.
This power goes directly to the microphone jack as well as a
switching regulator IC2 that converts the voltage to 3.3V which is
used for powering the rest of the circuits.
Interface to the CS800D, CS800, or CS801
The interface to the radios have the following connections:
Pin 1 (SPGND) This is the speaker ground connection from the
radio. It goes directly to the internal speaker of the CS-BFD.
Pin 2 (SPOUT) This is the speaker audio connection from the
radio. It goes directly to the internal speaker of the CS-BFD.
Pin 3 (8M) This is the power from the radio and is about 8 volts.
Pin 4 (RxD) This is the connection between the UART of the CS-
BFD and the UART of the radio.
Pin 5 (TxD) This is the connection between the UART of the CS-
BFD and the UART of the radio.
Pin 6 (POWER) This connection when grounded, turns the radio
on if it is off or turns the radio off if it is on.