eroflex Circuit T

Features

• CT2542 Replaces DDC BUS-65142 and BUS-65144

• CT2543 Replaces DDC BUS-65143 and BUS-65145

• Functions as a Complete Remote Terminal Unit

• Supports 13 Mode Codes, Illegalization of Codes Allowed

• Transfers Data with DMA Type Handshaking

• Latched Outputs for Command Word and Word Count

• 14 Bit Built-ln-Test Word Register

• 4 Error Flag Outputs

• Advanced Low Power VLSI Technology

• DESC SMD# 5962–89798 Approved

General Description

The CT2542 contains 2 transceivers, 2 encoder/decoders, bit processors and complete Remote Terminal (RT)

logic. The device is constructed using Aeroflex advanced VLSI custom chip and hybrid technology. It

functions as a complete dual redundant MIL-STD-1553B RT Unit supporting all 13 mode codes for dual

redundant operation. The CT2542 is a pin-for-pin functional equivalent of the DDC BUS-65142/144 and

performs parallel data transfers with a DMA type handshake. Multiple error flag outputs and host access to

many of the RT Status Word bits are just some of the features that make this part ideal for many RT

applications. The unit has an operating range of -55°C to + 125°C. Aeroflex is a MIL-PRF-38534 Certified

Manufacturer. See "Ordering Information" (last sheet) for CT2543.

Figure 1 – Functional Block Diagram

DB0-DB15

A0-A11

ERROR FLAG

TIMING FLAGS

STATUS BITS

I/O

INTERFACE

MIL-STD-1553B

PROTOCOL

AND

BIT

PROCESSING

LOGIC

ENCODER/

DECODER

ENCODER/

DECODER

DUAL

TRANSCEIVER

DATA BUS A

DATA BUS B

CT 2542 / CT2543

Dual Redundant Remote Terminal

FOR MIL-STD-1553B

CIRCUIT TECHNOLOGY

www.aeroflex.com

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