HE WANG

Can3 of MPC5606B Rx electrical level is not normal

Discussion created by HE WANG on Jun 1, 2016
Latest reply on Jun 3, 2016 by Petr Stancik

Hi, I am Wang He. Now I am Using MPC5606B to manage 6ch CAN bus. Can3 Rx electrical level is not normal while the other 5ch CAN bus are normal.

 

Can3 Rx wave form is like this:

Low level is 2V,  not 0V, while the other 5ch CAN bus Rx is 0V.

1.bmp

Schematic is like this:(the 6ch CAN bus are same)

 

3.bmp

The configuration of CAN3 is different from the other 5ch CAN bus is:

SIU.PCR[36].R = 0x0101;

SIU.PCR[37].R = 0x0A01;

 

For eaxmple, CAN4's configuration is like this:

SIU.PCR[94].R = 0x0601;

SIU.PCR[95].R = 0x0101;

 

I am looking forward to your guide. THANK You very much!

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