AN-175
12
Holt Integrated Circuits
Mode-4
LoopBack Mode
LoopBack mode combines a Transmitter and Receiver function similar to the normal Transmit and
Receive modes. The Transmitter will transmit the 32-bit incrementing counter in the data-field and the
receiver looks and compares against this data pattern and will turn on the RED LED the same way as in
normal Receive Mode. No actual data is transmitted to the Bus in LoopBack mode.
Button-2 - Stops transmitting CAN data and prints out the contents of the Transmit History FIFO as
shown below. Press Button-4 to continue.
History FIFO: 04 86 00
History FIFO: 04 87 00
History FIFO: 04 87 81
History FIFO: 04 88 03
History FIFO: 04 88 84
History FIFO: 04 89 06
History FIFO: 04 4D E2
Button-1 – Stop receiving CAN messages and prints the last 64 CAN frames and the HI-3110 status
registers on the serial console. Press Button-4 to resume receiving CAN Messages.
Mode-5
Transmit Extended Frames
This is the same as Transmit Mode-1 but with Extended Frame format.
Mode-6
Receiver Interrupt Mode
This is very similar to normal Receive mode-2 but without Sleep Mode. The main purpose is to
demonstrate how to use interrupts to received the CAN Bus data in the background.
Press Button-1 to stop receiving CAN messages and print the last 64 CAN frames and the HI-3110 status
registers on the serial console.
Press Button-4 to resume reception of CAN messages.
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