User's Manual

CDH Communications
3
Connections
The Data Radio is connected to a host device using the 11 pin and the 4 pin berg headers.
These connections provide the radio with the required DC power source (+5V) and allow
the Data Radio to be configured and provide the I/O lines for the asynchronous line level
(TTL) RS-232 connection.
J1 PIN DESCRIPTIONS
J1-1 CTS Clear to send flow control (output)
J1-2 INT1 Interrupt line to radio processor (input, not currently implemented)
J1-3 TX Asynchronous data output (data going from radio to user)
J1-4 RX Asynchronous data input (data going from user to radio)
J1-5 RTS Ready to send flow control (input, not currently implemented)
J1-6 *RESET Reset line to radio processor (assert low to reset radio processor)
J1-7 MOSI SPI data in (input, not currently implemented)
J1-8 MISO SPI data out (output, not currently implemented)
J1-9 SCK SPI data clock (input/output, not currently implemented)
J1-10 Power +5 volts DC. (55mA in RX mode, 200mA in TX mode)
J1-11 Ground
J2 PIN DESCRIPTIONS
J2-1 Ground
J2-2 Ground
J2-3 Ground
J2-4 Ground
Antenna Connection
Female MMCX