Problem with FT232RL(FTDI)

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phantomII

Joined Dec 23, 2019
17
Hi,
I designed a USB-UART converter using FT232RL IC for ESP32 which contains both header and pogo pin for UART pins. In the design i also connect CBUS3 pin to VCCIO with 10k resistor as it is referred in the datasheet but when i plug it into the pc, it's seen as Unknown USB Device (Device Descriptor Request Failed) in device manager.
 

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DickCappels

Joined Aug 21, 2008
8,671
Did you provide an manufacturer ID and product ID to the USB device? You probably have to specify the class of USB device as well.
 

DickCappels

Joined Aug 21, 2008
8,671
Those are bits of information that the endpoint needs to supply to the USB host. It has been over 20 years, so please forgive me if I cannot provide more details.
 
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