Greetings to Renesas Engineering Community,
Currently I am working on developing a USB interface for my product. The product receives MIDI messages via USB from a PC or a keyboard (musical instrument) .
It does not sends a MIDI message. what are auxiliary connections that come with USB VSS,USB VCC,DP and DM pins (pull up ,pull down resistors ,capacitors etc ) The product is powered by a SMPS in PCB with 3.3V .I want USB to be powered with the same.
Is there some pull up resistors in built in these pins.
Should I use USB isolators if so is there a connection settings I should do extra in that scenario.
Kindly guide me through the process as its my first project involving USB.
There does not appear to be any recommendation in the hardware user manual, and the RA6 design guide also does not mention hardware for the USB. The EK-RA6M1 reference design is likely a good reference design, from the schematic: