HI-3599

GENERAL DESCRIPTION

The HI-359x family from Holt Integrated Circuits are silicon gate CMOS ICs for interfacing up to eight ARINC  429 receive buses to a high-speed Serial Peripheral  Interface (SPI) enabled microcontroller. Each receiver  has user-programmable label recognition for up to 16  labels, a four-word data buffer (FIFO), and an on-chip  analog line receiver. Receive FIFO status can be monitored using the programmable external interrupt pins,  or by polling the status register. Other features include  the ability to switch the bit-signifiance of the ARINC 429  label and to recognize the 32nd received ARINC bit as  either data or a parity flag. Some versions provide a digital transmit channel which can be utilized with an external line driver such as HI-8570 to relay information from  multiple sources, for example sensors, to a single collection point such as a flight computer and can also be  configured as a loopback test register for each receive  channel. Versions are also available with different input  resistance values to provide flexibility when using external lightning protection circuitry. The SPI and all control  signals are CMOS and TTL compatible and support  3.3V or 5V operation.  The HI-3596 and HI-3598 are full featured parts. The  HI-3597 and HI-3599 give the user the option of utilizing  a smaller 24-pin SOIC package with very little trade off in  features. In this case, a global interrupt flag is provided  instead of individual external FIFO interrupt pins. The  HI-3597 is identical to the HI-3599 except that it offers  the digital transmit feature and seven receive channels.

FEATURES

  • ARINC 429 compliant

  • Up to 8 independent receive channels

  • Digital transmit channel (except HI-3599) 

  • 3.3V or 5.0V logic supply operation 

  • On-chip analog line receivers connect directly to  ARINC 429 bus

  • Programmable label recognition for 16 labels per  channel

  • Independent data rate selection for each receiver

  • Four-wire SPI interface

  • Label bit-order control