All Questions
Tagged with can transceiver
33
questions
0
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2
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897
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CAN transceiver interface with two CAN BUSES
I would like to use the NXP TJA1046/TJA1048 dual CAN transceiver to connect to two CAN BUS. I would like to mux the TX1/TX2 and RX1/RX2 and connect them to single TX/RX interface on the MCU. In order ...
- 383
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0
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MCP2551 with STM32 MCU
im learning about the CAN protocol, and bought the transceiver module MCP2551 like this:
I made the driver for CAN controller first in loopback mode for debug, im sending the numbers 1,2,3 and 4 with ...
- 21
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300
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Sending Serial Data via CAN transciever
I am required to transmit a standard Hex payload through serial com port to a device that has a CAN transceiver. The serial configuration is as follows: 500 kbps, 1, 8, None, 1.
The DUT has a CAN ...
- 71
4
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Compatibility and Interoperability Between CAN Standards
I'm intended to design a CAN system for a automotive scan tool. So, I need to comprise the main CAN standars used nowadays. Searching on the web I found the following options:
ISO 11519-2:1994 – Low-...
- 917
1
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2
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CAN transceiver interconnection to MCU (Tx, Rx and propagation delay)
I am working on a CAN transceiver and its connection to a microcontroller (hardware perspective only.)
Referring this appnote - What is CAN?
My questions:
In the above image, I see the CAN ...
user220456
5
votes
2
answers
4k
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Is there hardware compatibility between CAN 2.0 High Speed, Low Speed and CAN-FD?
I am studying CAN interface hardware for the design of an automotive scanner. So far, I have identified the following types of CAN:
CAN 2.0 High-Speed: bit rate up to 1Mbps
CAN 2.0 Low Speed: bit ...
- 917
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2
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1k
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Can you use a CAN FD transceiver for low speed (fault tolerant) CAN?
Fault tolerant CAN (ISO11898-3) is terminated differently than high speed CAN (ISO11898-2). Therefore the signal levels for dominant and especially recessive bits differ.
Newer CAN FD compatible ...
- 439
2
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1
answer
4k
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How does a CAN transceiver work?
CAN Transceiver Transmit Mode
I try to understand the transmit functionality of a CAN transceiver. I found this post a good starting point, but it doesn't completely answer my question.
Block ...
- 150
0
votes
1
answer
69
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Connecting CAN transceivers for devwork /home prototyping
I'm doing some home project, and would like to use this CAN transceiver (note just in case, not selecting CAN controller+transceiver chip, that's how I need it).
I would like to use this transceiver ...
- 57
2
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2
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2k
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Isolated CAN transceivers as a CAN bus extender
I am designing a system to 'hack' into a CAN bus. My first idea was to split the target CAN bus, terminating both ends into isolated CAN transceivers, and use a MCU to pass packets between the buses ...
- 145
1
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2
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778
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CAN transceiver Vref connection
I am using the TI SN65HVD230DR CAN transceiver on two separate CAN buses between three microcontrollers (MCUs) -- two are on the same board, and one is off-board. This transceiver includes a Vref pin:...
- 2,516
1
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1
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166
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Should I take precautions when using different CAN transceivers on the same bus?
What are the precautions I should be aware of when using different transceivers on a CAN bus?
What I can think of:
They neeed to operate at the same voltage (on ...
- 481
3
votes
1
answer
4k
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Simple CAN bus design, communication issues
I am trying to get some simple communication between two boards that I've designed with an ATmega328P microcontroller and MCP2515/MCP2551 combination.
The design is as follows:
I have both ends ...
- 31
4
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1
answer
2k
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How can CAN transceivers ouput CANH=3.5V and CANL=1.5V?
When sending a dominant bit (0bit) on the CAN bus, I understand that CAN transceivers output CANH=3.5V and CANL=1.5V.
But when looking at the schematics of a CAN transceiver, I do not understand how ...
5
votes
1
answer
2k
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Basic CAN-BUS circuit - what does this section do?
I'm currently learning how to make a circuit for CAN-BUS communication and came across the schematics of the Sparkfun CAN-BUS shield for Arduino (can be found here). I'm a little puzzled by this ...
