70 Programmable I/O Lines TM8000 3DK Hardware Developer’s Kit Application ManualSeptember 2003 © Tait Electronics Ltd3.2.2 Radio Transmission StatusApplication This output signal indicates, whether the radio is in transmission mode.This can be used with external modems as a gate for the start of data transmission with external applications, instead of looking at the PTT status, in orderto not interrupt a transmission by the user to switch scramblers from receive to transmitConfiguration Configure an output line and associate it with this action. Set the active stateto be high or low (as required).Timing Specification not finalised at time of publication. For further information,please contact Customer Support, Tait Electronics Ltd, Christchurch,New Zealand (refer to “Contact Information” on page 2 ).Description When the radio starts a RF transmission, this output line is activated.When the radio stops the RF transmission, this output is deactivated.While the ‘Toggle TX RF Inhibit’ input line is active, the RF output willbe inhibited, but the radio stays in transmit mode (refer to “Toggle Tx RFInhibit” on page 50). The ‘Radio Transmission Status’ input line is notaffected by the ‘Toggle TX RF Inhibit’ input line.Related Actions The ‘Reflected PTT Inhibit Status’ output signal reports transmissionrequests via any of the PTT input signals.
