hi-3200 Holt Integrated Circuits, Inc., hi-3200 Datasheet - Page 49
hi-3200
Manufacturer Part Number
hi-3200
Description
Avionics Data Management Engine / Arinc 429 - Can Bus Bridge
Manufacturer
Holt Integrated Circuits, Inc.
Datasheet
1.HI-3200.pdf
(58 pages)
- Current page: 49 of 58
- Download datasheet (228Kb)
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.
HOLT INTEGRATED CIRCUITS
HI-3200, HI-3201
49
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.
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