TM4C1294KCPDT: CAN evaluation

Taketo Sato

Hello team,

My customer has a question about CAN Bus of TM4C1294KCPDTI3.

Customer would like to evaluate signal integrity of the device's CAN Bus. However, it looks like there is no electrical spec mentioned in its datasheet.

How should they evaluate it?

Sample point seems to change by SW setting, so could you please let me know a way to evaluate it with using Setup time and Hold time, like other I/F?

Best regards,

over 5 years ago

0 Bob Crosby over 5 years ago

TI__Guru 72500 points

The CAN bus is not directly attached to the TM4C device. You must use a CAN transceiver. Here is a explanation of the CAN bus and protocol.

https://www.ti.com/lit/an/sloa101b/sloa101b.pdf

0 Taketo Sato over 5 years ago in reply to Bob Crosby

TI__Genius 10505 points

Hello Bob-san,

Thank you for your comment.

What customer would like to confirm is timing specification/requirement such as setup time and hold time for signal between CAN transceiver and TM4C1294KCPDT.

Could you let me know timing specification/requirement of CAN0TX and CAN0RX pins?

Best regards,

0 Bob Crosby over 5 years ago in reply to Taketo Sato

TI__Guru 72500 points

CANRX must be valid one system clock period to be detected. The CANTX has rise the rise/fall time of a 2mA GPIO pin.

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TM4C1294KCPDT: CAN evaluation