Datasheet > DEI2085-MES-G

DEI2085-MES-G

更新时间： 2022-06-24 15:40:53

品牌	Logo	应用领域
DEIAZ		/
页数	文件大小	规格书
15页	1321K
描述
ARINC 429 ENHANCED TRANSCEIVER

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数据手册

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DEI2085-MES-G 数据手册

will cause the next valid ARINC word received to

overwrite the existing data in FIFO location 32.

(/HF2) pin is intended to act as an interrupt flag to the

systems external microprocessor, allowing a 16 word data

retrieval routine to be performed, without the user needing

to continually poll the status register bits.

A FIFO half full flag /HF1 (/HF2) goes low if the FIFO

contains 16 or more received ARINC words. The /HF1

RECEIVERS

Figure 1 Receiver Function Diagram

write to all 16 location of label memory to ensure that no

previous unwanted label memory residual affect the label

recognition. Note that ARINC word reception is suspended

during the label memory write sequence. Therefore, CR1

of control register has to be written with zero before

returning to normal operation.

LABEL RECOGNITION

The chip compares the incoming label to the stored labels

if label recognition is enabled. If a match is found, the

data is processed. If a match is not found, no indicators of

receiving ARINC data are presented. Note that 00 (Hex) is

treated in the same way as any other label value. Label bit

significance is not changed by the status of control register

bit CR15. Label bits BD00 – BD07 are always compared

to receive ARINC bits 1- 8 respectively.

READING LABELS

When writing to, or reading from the label memory, SEL

must be set HIGH. Write to control register with Enable

Label Read/Write (set CR1 = 1) and Disable Label

recognition (set CR2,3 = 0) during the label read sequence.

Then the next 16 data reads of the selected receiver (/EN

taken low) are labels. /EN1 is used to read labels for

receiver 1, and /EN2 to read labels for receiver 2. Label

data is presented on BD00 – BD07. All 16 locations should

be accessed, and CR1 must be written to zero before

returning to normal operation.

LOADING LABELS

When writing to, or reading from the label memory, SEL

must be set HIGH. Write to control register with Enable

Label Read/Write (set CR1 = 1) and Disable Label

recognition (set CR2,3 = 0) during the label write

sequence. Then the next 16 writes of data (/PL pulsed low)

load the label data into each location of the label memory

from the BD00 – BD07 pins. The /PL1 pin is used to write

label data for receiver 1 and /PL2 for receiver 2. Always

6 of 15

DS-MW-01084-02 Rev. H

11/24/2015

1...3 4 567 8 9...15

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