Microchip USB4715 Handleiding

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 2017-2018 Microchip Technology Inc.DS00002430C-page 1

INTRODUCTION

The USB-to-SPI Bridging feature gives system designers using Microchip hubs expanded system control and potential

BOM reduction. The use of a separate USB-to-SPI device is no longer required, and a downstream USB port is not lost

as occurs when a standalone USB-to-SPI device is implemented. This feature is available on Microchip hubs which con-

tain the internal Hub Feature Controller and an SPI interface. These hubs include USB4712, USB4714, USB4715,

USB4912, USB4914, USB4916, USB4925, and USB4927.

Commands may be sent from the USB Host to the internal Hub Feature Controller (HFC) device in the Microchip hub

to perform the following functions:

•Get hub information

•Reset the hub

•Force boot from internal ROM

•Enable SPI pass-through interface

•Disable SPI pass-through interface

•SPI pass-through write/read

SECTIONS

General Information

Part Number-Specific Information

Microchip Software Solutions

Low-Level Implementation

REFERENCES

Consult the following documents for details on the specific parts referred to in this document:

•USB4712 Data Sheet

•USB4714 Data Sheet

•USB4715 Data Sheet

•USB4912 Data Sheet

•USB4914 Data Sheet

•USB4916 Data Sheet

•USB4925 Data Sheet

•USB4927 Data Sheet

•SST26VF016B Data Sheet

•Configuration of the USB471x and USB49xx Application Note

AN2430

USB-to-SPI Bridging with Microchip USB471x and

USB49xx Hubs

Author:Shiva Balasubramanian

Microchip Technology Inc.

Product specificaties