When making the PCB, be sure to place the c4 capacitor close enough to the chip . This is where the previous verification failed.
The PCB is also compatible with the MA8601 chip (another USB expansion chip, which has also been verified). The chip pin packaging is exactly the same. It can work after changing/deleting the corresponding resistors and capacitors according to the schematic diagram.
If necessary, you can compare the two chips and choose the one you can accept.
At present, both chips have been verified and can work normally. There are physical pictures of the two chips working in the attachment.
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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.
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