CT1775 반도체 회로 부품 판매점
CT1775 Universal MacAir/1553 Dumb RTU Hybrid
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 Aeroflex Circuit Technology |
CT 1775
Universal MacAir/1553 Dumb RTU Hybrid
PRELIMINARY DATA SHEET
www.aeroflex.com/Avionics
FEATURES
❑ CT1775 Replaces DDC BUS-65201
❑ Includes:
- Universal Transceiver
- Encoder/decoder
- Dual Rank I/O Registers
- Fail-safe Timer
- Clock Oscillator
❑ Simple Controls for Single or Dual Redundant Data Bus Configurations
❑ Provides Flags for:
- Own Address (With Parity)
- Mode Code
- Broadcast
- Time Out
- Valid Word
- Sync Type
❑ 16 Bit or 8 Bit 3-State
- Parallel I/O and Serial Out
❑ Wraparound Built-In Test
❑ MIL-PRF-38534 Compliant Circuits Available
❑ Packaging – Hermetic Metal
- 68 Pin, 1.85" x 1.6" x .19" Plug-In Type Package
DESCRIPTION
The CT1775 Universal MACAIR/1553 Dumb Remote Terminal Unit (RTU) consists of a transceiver, and encoder/decoder, control
logic, dual rank I/O registers and internal clock oscillator packaged in a 1.6" x 1.9" hermetic hybrid. It provides all the functions
required to interface between a MACAIR (sinusodial) or MIL-STD-1553 (Trapezoidal) serial MUX data bus and a subsystem parallel
3-state data highway. Utilizing several ASIC ICs, the CT1775 provides sufficient handshaking, control and data lines to permit
versatile operation as a remote terminal, a bus controller or a bus monitor, in either single or dual redundant data bus configurations.
As a transmitter, the CT1775 accepts 8 bit or 16 bit parallel date from the subsystem, and outputs serial Manchester II coded
Command, Status or Data words, under subsystem control. As a receiver, it accepts serial MIL-STD-1553 or MACAIR transmissions
and transfers all Command, Status and Data words to the 8 bit or 16 bit data highway, under subsystem control. The CT1775 also
provides flags to the subsystem when Broadcast, Mode Code, and Own Address (with parity) commands are decoded.
The CT1775 contains a terminal fail-safe timeout circuit which flags message lengths exceeding 768µs, and terminates serial data
transmission. Wraparound selftest is initiated by a control line which causes the encoder serial output to be connected to the decoder
input. The CT1775 provides a serial output of decoded words, thus allowing Command Word look ahead, for the fastest terminal
response.
SCDCT1775 Rev B
SCDCT1775 Rev B
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