U.S. Traffic 170E-ATC - Peek Traffic

Chapter 4 — Hardware Programming InformationTable 9 — Control Register Encoding FormatDATA BUSLINE NAMEBaud RateSelectPOSSIBLE BITCONFIGURATIONS **BITBIT1 0FUNCTIONSAICA CLK KHz 307.2 153.6 76.8 38.4 19.20 0ACIA CLK FREQ ††1 00 11 1BAUDRATE4800 2400 1200 600 30019200 9600 4800 2400 1200Word Select BIT BIT BIT4 3 20 0 00 0 10 1 00 1 11 0 01 0 11 1 01 1 1TransmitterControlReceiveInterruptEnableBIT BIT RTS ‡‡6 50 0 Low0 1 Low1 0 High1 1 LowBIT7107 bits + even parity + 2 stop bits.7 bits + odd parity + 2 stop bits.7 bits + even parity + 1 stop bit7 bits + 0dd parity +1 stop bit8 bits + 2 stop bits.8 bits + 1 stop bits.8 bits + even parity + 1 stop bit.8 bits + odd parity + 1 stop bitTransmitting Interrupt disabled.Transmitting Interrupt enabled.Transmitting Interrupt disabled.Transmits a break level on the Transmit Data OutputTransmitting Interrupt disable.Enables interrupts caused by either of the following:a) Receiver Data Register going high;b) A low to high transmission on the Data CarrierDetect signal line.Cleared by selecting the Receive Data Register or byresetting the Receive Interrupt Enable bit.** Bit numbers are assigned from right to left (7 6 5 4 3 2 1 0)†† Requires external synchronization‡‡ RTS = Request-to-send22 U.S. Traffic 170E-ATC Controller Operating Manual