USB extension controller
The DataSheet of CH315 (the first)
1
USB extension control chip CH315G
USB signal isolation control chip CH315H
DataSh...
Description
The DataSheet of CH315 (the first)
1
USB extension control chip CH315G
USB signal isolation control chip CH315H
DataSheet Version:1A http://wch.cn http://wch-ic.com
1. Introduction
CH315G is USB extension control chip, used for USB signal real time transmit and extend transfer distance.
CH315H is USB signals isolation control chip, used for USB bus optical isolator or magnetic isolator. CH315 supports full-speed and low-speed transfer, support USB device dynamic insert and remove. The following is application image.
Power
PC Or other
USB Host
USB
CH315G
Power
CH315G
Power
Upstream UP#=GND
Long distance Signal transfer Full-speed 75m Low-speed 300m
Downstream UP#=VCC
USB
USB keyboard USB mice USB Flash Drive /Flash disk USB printer
USB collection box
USB controller
PC Or other
USB Host
Power USB
CH315H Upstream UP#=GND
Photic coupler isolator
CH315H
Power
Magnetic coupler isolator
Downstream UP#=VCC
USB
USB keyboard USB mice USB Flash Drive /Flash disk USB printer
USB collection box
USB controller
2. Features
● supports 12Mbps full-speed and 1.5Mbps low-speed USB transfer, compatible with USB 2.0. ● supports USB control transfer, bulk transfer, interrupt transfer, synchronous/isochronous transfer.
The DataSheet of CH315 (the first)
2
● automatically detect USB Full-Speed or USB Low-Speed, CH315H offer USB transfer status indication. ● the same chip can be configured as upstream mode and downstream mode, connect to USB-Host and USB-Device. ● the down...
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