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166 Views
Registered: ‎03-05-2019

CANFD V2.0 IP output signal can_phy_tx has no waveform

    Use the canfd ip to simulate,but the output singal can_phy_tx has no waveform,only keep high level 1,the waveform is Figure 1,Figure 2 and Figure 3. 
    The frequency of the s_axi_aclk and can_clk are all 20MHz.The input timing for the canip is accord with the required timing. 
    I get the information from the xilinx forum the canfd ip need to be touched-up to use for xilinx vivado from version 17.2 through 18.2. My vivado version is 2017.4.
    Please help confirm.

    The forum link is as below.It seems the same issue as mine.
https://forums.xilinx.com/t5/Embedded-Processor-System-Design/CANFD-V2-0-IP-Core-goes-wild-at-any-bus-activity-Zynq7000/m-p/931869?advanced=false&collapse_discussion=true&filter=location&location=category:XlnxProd&q=canfd&search_type=thread

    The configuration address and data are show as Figure 2 and Figure 3.

canfd.PNGFigure 1

 canfd1.PNGFigure 2

canfd2.PNGFigure 3

 

 

 

 

 

2 Replies
Xilinx Employee
Xilinx Employee
98 Views
Registered: ‎07-12-2018

Re: CANFD V2.0 IP output signal can_phy_tx has no waveform

Hi tanjl@delicasz.com 

 

CAN-FD requires 8k of register space. Did you check that in the address editor?

If the register space is 4k change it to 8k and check.

Best Regards
Abhinay PS
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75 Views
Registered: ‎03-05-2019

Re: CANFD V2.0 IP output signal can_phy_tx has no waveform

Hi Abhinayp,

     Thanks very much for your reply.

     When I connect the CANFD IP signal can_phy_tx to can_phy_rx,the can_phy_tx has signal.Does the can_phy_rx firstly have signal then the can_phy_tx has signal?

I get the can_phy_tx is related to the nodes and the ID(filter id),but I use it for the single node. How do I set the registers for the CANFD IP?

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