DD-42916XR-301 [ETC]

Telecomm/Datacomm ; 电信/数据通信\n


型号：	DD-42916XR-301
厂家：	ETC
描述：	Telecomm/Datacomm 电信/数据通信\n 外围集成电路电信数据通信
文件：	总4页 (文件大小：309K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

DD-42916X SERIES

ARINC 429 VXI INTERFACE

MODULES

DESCRIPTION

FEATURES

The DD-42916X Series modules, avail-

able in B or C size, provide a high-per-

formance communications link between

a VXI host and an ARINC 429 Data

Bus. This series of modules is factory

configured as either register- or mes-

sage-based devices.

depots for implementing margin testing to

detect "phantom" errors and failures.

• Eight Programmable Parametric

Channels: Receive or Transmit;

High, Low, and Variable Speed;

Variable Voltage; Bit Gap; and

Word Size

The modules support eight configurable

parametric channels that can be set as

either receivers or transmitters. When

acting as transmitters, these channels

can output signals from 0 to 12 Volts.

Transmitters or receivers can be config-

ured for variable word sizes (2 - 32 bits),

appropriate parity (EVEN/ODD/NONE),

variable frequency (5 KHz - 120 KHz),

and variable bit gap.

• Eight Additional Low-Speed

Receivers

The module architecture is based on a

multiprocessor design that provides reli-

able, high-integrity ARINC 429 recep-

tion and transmission. Modules are

designed for high-performance applica-

tions, capable of off-loading tasks from

the host computer that could not previ-

ously be performed by a single interface

module.

• On-Board Engineering Unit

Conversion

• 256 Kilobytes-Dual Port RAM for

Real-Time Data

In addition to the eight configurable

channels, the modules also provide eight

low-speed receiver channels, for a total

of up to 16 independent ARINC 429 chan-

nels. The modules can filter received data

and schedule transmitted data as deter-

mined by the host computer. All of the

DD-42916X series modules have a float-

ing-point coprocessor used to convert

data to and from engineering units. This

allows the host to communicate data to

the module in engineering unit format.

• Available in B or C Size

• RS232/RS422 Port

The modules conform with the Mark 33

Digital Information Transfer System 429-

14 specifications. They are capable of

parametric testing that handles communi-

cations which deviate from the standard

specification. This is useful during the test

and validation phases of Line Replaceable

Unit (LRU) development and at repair

• Bus Master Capability

Bus Connection

Single Lines

RS232/422

ARINC

429

Tx Driver

ARINC 429 Tx

RS232/422

Driver

ARINC 429 Rx

ARINC

429

Tx Driver

ARINC 429 Tx

MC68332

Processor

ARINC 429 Rx

Low Speed ARINC 429 Rx

MC68340

Board Processor

2 Discrete Out

Test Points

8 Signal

DAC

8 Signal

ADC

S/W Selectable

Base Address

2 Discrete Out

to LEDs

256 KBytes

SRAM

Master/Slave

VXI

INTERFACE

16 Bit Data Bus

8 Outputs

4 Inputs

Front

Panel

LEDs

256 KBytes

SRAM

256 KBytes

ROM

}

Jumper select

A24 or A32

Response

FIFO

Command

FIFO

MC68882

Floating-Point

Coprocessor

Discrete

I/O

256 KBytes

Dual-Port RAM

FIGURE 1. ARINC 429 VXI MODULE FUNCTIONAL BLOCK DIAGRAM

MODULE FEATURES

ARINC 429 RECEPTION

TABLE 1. DD-42916X GENERAL SPECIFICATIONS

ELECTRICAL

Operating Voltage: + 5 VDC and ± 12 VDC

Each receiver channel independently time-stamps and buffers

the incoming data. The data is then converted to engineering

units (if desired), and sent to the VXI host. Received words are

automatically checked for parity. A built-in error counter indicates

the number of errors that have occurred during data reception.

The module can also filter received words, thereby off-loading

the host processor by only collecting data of interest.

Typical Operating Current : 1.4 A at 5 VDC

0.15 A at 12 VDC

0.1 A at - 12 VDC

ENVIRONMENT

Operating Temperature: 0° - +40° C at 99% relative

humidity noncondensing

ARINC 429 TRANSMISSION

Storage Temperature: -40° - +70° C at 99% relative

humidity noncondensing

Each transmitter channel processes scheduled transmissions

and transmits buffered sequential words. When the module gets

a transmit word from the host, it is converted from engineering

units to the ARINC 429 word and proper parity is automatically

generated.

PHYSICAL CHARACTERISTICS

B Size

Height: 9.2" (23.37 cm)

Width: 0.8" (2.03 cm)

Depth: 6.2" (15.75 cm)

TIME STAMPING

C Size

Height: 9.2" (28.37 cm)

Width: 1.2" (3.05 cm)

Depth: 13.4" (34.04 cm)

The modules are capable of time-stamping all received data

words. For applications that use multiple modules, the timer on

each module used to time-stamp received words can be syn-

chronized by connecting all the modules via a pin on the exter-

nal connector.

WEIGHT

B Size

Net: 12 oz. (0.34 kg)

BUILT-IN TESTING

Shipping: 28 oz. (0.79 kg)

The module's firmware contains built-in tests which are per-

formed on power-up. When these tests are passed, the module

indicates to the host that it successfully completed power-up

self-testing. If any test fails, this information is passed on to the

host. The LEDs, including the main FAIL light on the module's

front panel, are lit to indicate a failure code.

C Size

Net: 22 oz. (0.64 kg)

Shipping: 28 oz. (1.07 kg)

DEVICE TYPE:

1 - 254, switch selectable

1 - 7, switch selectable

LOGICAL ADDRESS:

INTERRUPT LEVEL:

ADDRESS SPACE:

The following tests are performed during power up: processor

tests, memory tests, math coprocessor tests, a ROM checksum

test, and channel processor communication tests. In addition,

the module contains an Analog-to-Digital Converter (ADC) that

allows testing of the Digital-to-Analog Converter (DAC) controlling

the variable voltage outputs of the ARINC 429 transmitters.

A16/A32 or A16/A24, D16

Slave/Master Devices Uses

256 kbytes of A24 or A32 Space

TECHNICAL OVERVIEW

The host has the ability to perform a complete system test when

the user connects an external loopback connector to the module.

This connects input discretes to output discretes, and ARINC

429 transmitters to receivers.The host can then send data on the

transmitters and verify that the data was received correctly by the

ARINC 429 receivers.

The DD-42916X module has five processors. One, called the

board processor, maintains host communication, converts raw

data to and from the engineering unit format, and transfers it to

the four channel processors. The channel processors manage

and control the 429 communication. Each channel processor

handles two configurable receive or transmit channels (high or

low speed) and two low-speed receive channels.

HOST COMMUNICATIONS

Modules are available as message- or register-based devices.

Since each channel processor can filter received data and

schedule transmit data, the performance of the board processor

is not dependent on bus loading, but on the amount of received

data being transferred to the host, and the amount of transmit

data the host generates. The receivers cannot unknowingly lose

data since each of the channel processors can buffer fully loaded

buses.

of Dual-Port RAM, a Command First-In-First-Out (FIFO), a

Response FIFO, and optional interrupts. The Command and

Response FIFOs are used to communicate commands to the

module from the host, and responses to those commands back to

the host. The 256 KBytes of Dual-Port RAM is used primarily to

communicate large volumes of ARINC 429 real-time data.

TABLE 2. EXAMPLES OF STANDARD FIRMWARE FUNCTIONS

•

CONFIGURATION

•

TRANSMITTING

ConfigureSerialPort, SetInterruptConditions

CARD CONTROL

DefineTxScheduleTable, ModifyTxChannel

ENGINEERING UNITS

DequeueErrors, ResetClock, RunDiagnostic

CHANNEL CONTROL

LoadEngineeringConversion Table

DISCRETE CONTROL

HaltChannel, StartChannel

RECEIVING

ReadInputDiscrete, WriteOutputDiscrete

DefineRxFilterWords, ModifyRxChannel

Message-based modules communicate using the communica-

tion registers in the A16 space. The message-based modules

provide the same functionality as the register-based modules

through SCPI-like commands.

allow users to program their module without specific knowledge

of the module’s architecture.

When transmitting, the host can request that the module send

data sequentially from a FIFO queue, or that the module auto-

matically send scheduled data and allow the host to update the

data asynchronously. If both FIFO and scheduled modes are

selected, the scheduled data always takes priority over the FIFO

data, with the FIFO data words “filling-in” the gaps between

scheduled data.

INTERRUPT GENERATION

The robust interrupt generation capability allows the modules to asyn-

chronously signal the host (VXI system controller) when certain events

occur.These events include: receive and transmit events, error events,

FIFO events, discrete I/O events, and board processor interrupts.

When receiving, the host can get data sequentially from a FIFO,

or get the most recent data for any label/SDI combination from a

mailbox slot. The data placed in the receive FIFO is time-

stamped by the module. The FIFO words can be filtered by

label/SDI combination.

Through program control, any of the interrupts can be selective-

ly enabled or masked. The modules can be configured to inter-

rupt on any one of the seven interrupt lines.

INDICATOR LEDS

The host can configure the size of the FIFOs in Dual-Port RAM

to be from 16 words to 32K ARINC 429 words. The starting

address for each FIFO is therefore dependent on how the host

configures the module. Each routine that configures a FIFO

returns the offset for that FIFO.

There is a standard VXI fail light on the front panel which indi-

cates the pass/fail status of the module's built-in-tests. Four

more LEDs are used to provide detailed diagnostic information.

All of these LEDs are connected to output discretes and are,

therefore, also available on the module's external connector.

There are eight additional LEDs on the front panel indicating

channel activity and channel built-in-test status.

The host can download an Engineering Unit Conversion Table to

the module that enables conversion between raw ARINC 429

words and engineering units. The format for all ARINC 429 data

placed in Dual-Port RAM is determined by this table. If no table

has been defined, all words default to raw format. The firmware

also allows the user to download and execute user-developed

software on the module.

INPUT/OUTPUT DISCRETES

There are eight output discretes (TTL compatible) on the mod-

ules.These are used for a variety of purposes, including VXI trig-

ger lines, indicating status, and general purpose use. These out-

puts can sink up to 40 mA of current. There are four input dis-

cretes (TTL and CMOS compatible). Each input discrete accepts

any input from 2.4 - 5 volts as a “true” voltage, and from 0 - 0.8

volts as “false.”

SUPPORT

ILC Data Device Corporation is committed to providing unsur-

passed customer support. All hardware has a two-year limited

warranty and software has a 90 day limited warranty. During this

warranty period, all software updates are free.

MODULE FIRMWARE

Firmware which supports an extensive set of ARINC 429 func-

tions is supplied with each DD-42916X module. These functions

ORDERING INFORMATION

DD-42916XX-30X

Card Size

1 = B Size

2 = C Size

Temp Range

3 = 0° to 40°C

Device Type

M = Message Based

R = Register Based

Type

X = VXI

Number of Channels

16 = 8 Rx and 8 Rx/Tx (Configurable)

The information in this data sheet is believed to be accurate; however, no responsibility is

assumed by Data Device Corporation for its use, and no license or rights are

granted by implication or otherwise in connection therewith.

Specifications are subject to change without notice.

105 Wilbur Place, Bohemia, New York 11716-2482

For Technical Support - 1-800-DDC-5757 ext. 7402

Headquarters - Tel: (631) 567-5600 ext. 7402, Fax: (631) 567-7358

Southeast - Tel: (703) 450-7900, Fax: (703) 450-6610

West Coast - Tel: (714) 895-9777, Fax: (714) 895-4988

Europe - Tel: +44-(0)1635-811140, Fax: +44-(0)1635-32264

Asia/Pacific - Tel: +81-(0)3-3814-7688, Fax: +81-(0)3-3814-7689

World Wide Web - http://www.ddc-web.com

A-11/98-1M

PRINTED IN THE U.S.A.

DD-42916XR-301 [ETC]

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