hello everyone.
i am working on a new project which includes a gsm module(with usb to ttl converter ch340g) 2 usb to audio converters attached with a usb hub controller ic GL850g which is a 4 port usb hub controller. i have connected the gsm with a individual power supply through the LM2596 buck converter which is 3.9v and other complete system is powered with the LM2576 buck converter. all the three devices should be connected with the pc through the usb hub controller which is is working fine. now the problem is that the usb automatically disconnects from the pc when i dial any number from the pc using the terminal...i have tasted all the components in the usb hub circuit but didn't find anything wrong according to the datasheet and the recommended schematic by the manufacturer .the schematic are attached .
please anyone help me if you know anything about this problem or faced the same.
Thank you
i am working on a new project which includes a gsm module(with usb to ttl converter ch340g) 2 usb to audio converters attached with a usb hub controller ic GL850g which is a 4 port usb hub controller. i have connected the gsm with a individual power supply through the LM2596 buck converter which is 3.9v and other complete system is powered with the LM2576 buck converter. all the three devices should be connected with the pc through the usb hub controller which is is working fine. now the problem is that the usb automatically disconnects from the pc when i dial any number from the pc using the terminal...i have tasted all the components in the usb hub circuit but didn't find anything wrong according to the datasheet and the recommended schematic by the manufacturer .the schematic are attached .
please anyone help me if you know anything about this problem or faced the same.
Thank you
