Can the built-in high-speed CR be selected for Master Clock when using the USB Function? - KBA218388

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    Translation - Japanese: USB 機能を使用するときに内蔵のハイスピード CR をクロックに選択することは可能ですか? - KBA218388 - Community Translated (JA)



    When using the USB function, can we select the built-in high-speed CR for the master clock?



    No. The high-speed CR clock (CLKHC) frequency accuracy does not meet the required USB specification. Also, EthernetMAC, CAN/CAN-FD, and I2S block cannot be used in this case. Refer to the FMx Peripheral Manual (Communication Part) for more notes on when to use high-speed CR for the master clock.