HI-3200 View Datasheet(PDF) - Holt Integrated Circuits

Part Name

Description

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HI-3200

AVIONICS DATA MANAGEMENT ENGINE / ARINC 429 - CAN BUS BRIDGE

Holt Integrated Circuits 

HI-3200, HI-3201

HOST SPI BY-PASS

When the HI-3200 is reset and initialization Mode 6 is

selected (by setting MODE2:0 inputs to “110”), the SPI by-

pass function is enabled when the device is in the idle

state. SPI By-Pass allows the host CPU to communicate

directly with the HI-3110 CAN controller via its dedicated

SPI interface, by-passing the HI-3200. SPI command

sequences from the host CPU may then directly

interrogate or program the attached HI-3110.

In normal operation, the HI-3200 handles all HI-3110

control functions. SPI By-Pass is intended only as a

system debugging aid.

For a full description of the HI-3110 and its SPI instruction

set, please refer to the latest revision of the HI-3110 data

sheet.

SPI By-Pass mode is disabled as soon as the RUN input is

taken high and the device enters the ACTIVE state. Any

further toggling of the RUN pin will not re-initiate SPI by-

pass mode.

HOLT INTEGRATED CIRCUITS

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