CT2566-FP datasheet(2/37 Pages) AEROFLEX

Part #	CT2566-FP

Description	CT2566 MIL-STD-1553 to Microprocessor Interface Unit

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Manufacturer	AEROFLEX [Aeroflex Circuit Technology]

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Aeroflex Circuit Technology

SCDCT2566 REV B 8/10/99 Plainview NY (516) 694-6700

2

GENERAL

The CT2566 was designed to perform required

handshaking to the 1553 interface device, storing

or retrieving message(s) from a user supplied

RAM and notifying the CPU that a 1553

transaction has occurred. The CPU uses this

RAM to read the received data as well as to store

messages to be transmitted onto the Bus.

The CT2566 can be used to implement BC, RT,

or MT operation and can be either memory

mapped or I/O mapped to CPU address space.

Registers internal to the CT2566 control its

operation.

The CT2566 can access up to four external,

user supplied registers and can address up to

64K words of RAM. The RAM selected must be a

non-latched static RAM (capable of meeting the

timing constraints for the CT2566). A double

buffering architecture is provided to prevent

incomplete or partially updated information from

being transmitted onto the 1553 Data Bus.

The CT2566 requires an external, user supplied

clock.

COMPATIBLE MICROPROCESSOR TYPES

The CT2566 may be used with most common

microprocessors, including, the Motorola 68000

family, the Intel 8080 family, Zilog Z8000

products,

and

available

MIL-STD-1750

processors.

Interfacing the CT2566 to the 1553 Data Bus

requires external circuitry such as Aeroflex’s

CT2565(BC/RT/MT)

and

ACT4489D

transceivers. Figure 2 shows the interconnection

for these components.

Specifications at Nominal Power Supply Voltages

PARAMETER

VALUE

UNITS

Logic

IIH (With VIH = 2.7V)

−630

µA

IIL (With VIL = 0.0V)

−700

µA

IOH

4.0 min

mA

IOL

4.0

mA

VIH

2.0

V

VIL

0.8

V

VOH

3.7

V

VOL

0.4

V

Clock

12

MHz

Power Supplies

Voltage

5.0±10%

V

Current Drain

10 typ

mA

Temperature Range

Operating (Case)

−55 to +125

°C

Storage

−65 to +150

°C

Physical Characteristics

Size

78 pin DIP

2.1 x 1.87 x 0.25

(53 x 47.5 x 6.4)

in

(mm)

82 pin flatpack

2.1 x 1.87 x 0.25

(55.6 x 40.6 x 3.71)

in

(mm)

Weight

78 pin DIP

1 (28)

oz (g)

82 pin flatpack

1 (28)

oz (g)

Table 1 – Specifications

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