How to get the IMX6Q's Fcanclk frequency

[jiongzhongliu]

The IMX6Q's datasheet describe that the "Ftq = Fcanclk/prescaler", the problem is that how can I know or calculate the Fcanclk? I need to know the Fcanclk value, because I develop the IMX6Q on a bare board.Is anybody know it?

[igorpadykov · Accepted solution]

Hi jiongzhong

please check description in sect.26.8.13 Control 2 Register (FLEXCANx_CTRL2)

http://cache.nxp.com/files/soft_dev_tools/doc/support_info/iMX6DQPRM.pdf :

fCANCLK is the Protocol Engine (PE) Clock in Hz; PE clock is derrived from

CAN_CLK_ROOT in CCM. See Clock Root Generator, sect.18.5.1.5.4 Clock Root Generator,

from Table 26-2. FLEXCAN Clocks : Protocol Engine clock is can_clk_root

Best regards

igor

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