The DataSheet of CH374 (the first) 1 USB bus interface chip CH374 English DataSheet Version: 2 http://wch.cn http://wch-ic.com 1.
Introduction CH374 is a USB bus universal interface chip, supports both USB-HOST and USB-DEVICE/SLAVE mode.
There are three ports of HUB internal.
It supports low-speed and full-speed control transfer, bulk transfer, interrupt transfer and synchronous/isochronous transfer.
At local, there are 8-bit data bus and read, write, chip select control wire and interrupt out