Microchip USB3341 Bruksanvisning
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2010-2019 Microchip Technology Inc.DS00002971A-page 1
INTRODUCTION
The USB334x provides the physical layer interface (PHY) 2.0. Proper design tech-in systems using Hi-Speed USB
niques must be used in the printed circuit board (PCB) layout to maintain the signal integrity required for 480 Mbps oper-
ation. The USB334x is available in both 24-pin and 32-pin QFN packages; layout guidelines for general QFN packages
are provided in this application note.
Audience
This document is written for a reader that is familiar with hardware design and the USB 2.0 specification. The goal of
this application note is to provide guidance on sensitive areas of the PCB layout.
Overview
The following recommendations are for a four layer PCB layout with a Microchip part. Our recommendations are not the
only way to layout our 24-pin and 32-pin QFN packages. PCB design engineers will have his/her own preference, and
the implementation will be dependent on complexity and density of layout, PCB real estate, number and types of devices
in circuit and the environment that the final product will reside in. For example, the PCB described in this application
note has components on both sides of the board. A four layer board could be realized with components on one side only.
References
The following documents should be referenced when using this application note:
•Microchip USB334x Data Sheets
•Universal Serial Bus Specification Revision 2.0
AN 22.3
USB334x USB Transceiver Layout Guidelines
Produktspecifikationer
| Varumärke: | Microchip |
| Kategori: | Inte kategoriserad |
| Modell: | USB3341 |
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