2008•Electrical Measurement & InstrumentationRequires access

Extend USB interface for measure instrument based on DSP

Wei Liu

Abstract

In this paper,the system selects the special USB interface chip,applying for a high-performance DSP chips as a USB interface controller in order to realize the measuring equipment to expand the purpose of USB interface.It designs a DSP and USB interface chip(PDIUSBD12) connectivity,gives out the key thought to software design of USB Communication.Through debugging,data transmission rate reaches an average of 130 Kb / s to meet the general instruments high-speed data transmission.In addition,the interface design scheme has good portability,and provides the realization project of a high performance-to-price ratio and the high applicability for the expansion of USB interface of measuring equipment.

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Available abstract

Key concepts: USB, Host controller interface, Interface (matter), Software portability, eXtensible Host Controller Interface (xHCI), Embedded system, Computer hardware, Firmware