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TS68C429A

CMOS ARINC 429 Multichannel Receiver/Transmitter (MRT)

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Figure 8-6. Label Control Matrix

Figure 8-7.

TS68C429A

9. Transmitter Channel Unit (TCU)

9.1 Overview

The TCU is composed of three ARINC transmit channels and has per channel:

• a parallel to serial converter to translate the messages into two serial signals,

• a FIFO memory to store eight 32-bit ARINC messages,

• a control logic to synchronize the message transmitter (parity, gap, speed...).

9.2 Outputs

Each transmitter channel has two output lines, Transmit line High (TXiH) and Transmit line Low (TXiL)

which are not directly compatible with the bipolar modulated ARINC line. These RZ format lines should

be translated by an outside device into ARINC three-level state signal according to Figure 9-1 on page

21.

20

0848E–HIREL–02/08

e2v semiconductors SAS 2008

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