Datasheet > 1775

1775

更新时间： 2024-11-11 22:09:15

品牌	Logo	应用领域
艾法斯 - AEROFLEX		/
页数	文件大小	规格书
14页	184K
描述
Universal MacAir/1553 Dumb RTU Hybrid PRELIMINARY DATA SHEET

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1775 数据手册

CT1775

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

12 3 4 5 6 7...14

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