CT1820

CT1820 Data Terminal Bit Processor for MIL-STD-1553 A & B Features Performs Encoder, Decoder, Logic and Control functions of a Data Bus Terminal to MIL-STD-1553 specifications, including Address, Mode Code and Broadcast Decoding and Terminal Fail Safe Flexibility - all control lines accessible Parallel tri-state subsystem l/O bus compatible with both 16 bit and 8 bit systems Dual rank l/O registers for versatile subsystem tlmlng X LA LE Operates from +5VDC @ 40mA typical (25mA CT1820) F Self-contained oscillator and clock driver Look-ahead serial receive data output Self-test, on-line wraparound, plus off-line capability 9001 B A E RO S ISO I NC . 1 C General Description E RTIFIED The CT1555-3/CT1820 Bit Processor Unit (BPU) is an advanced Hybrid Microcircuit that provides the interface between a MIL-STD-1553 Transceiver such as CT3231M or CT3232M, and the subsystem internal parallel data bus. The unit can be employed as the mux bus interface for Remote Subsystems or Master Terminal Bus Controllers, thus providing a common interface for all systems communicating over the bus. The unit places no restrictions on Command, Response or polling operations as it transfers all Command, Status and Data words from the bus to parallel output lines, together with error information, bus status and handshaking signals. It also contains 5 Bit Address Recognition, Broadcast and Mode Code Decode, Terminal Fail Safe Signal and Self Test. In the transmit mode, it accep...