MCP215X数据吞吐量

Throughput is based on many factors, some of which
are determined by the Secondary Device (host
controller + MCP215X) and others that are determined
by the Primary Device.
This application note discusses techniques that will
improve the data transfer throughput between an IrDA
®
standard Primary Device and embedded system and-
focus on what techniques can be used on the interface
between the host controller and the MCP215X. The
embedded system (Secondary Device) uses a
MCP215X device for the IrDA
®
standard communica-
tion (IrCOMM 9-wire “cooked” service class). Figure 1
shows a typical IrDA standard system.
All timing measurements and screen captures in this
application note are performed using a Palm™
Tungsten™ T2 PDA as the Primary Device. Using a
different Primary Device may yield different results.
M AN927
Data Throughput and the MCP215X
In many typical systems, the majority of data will travel
Author: Mark Palmer
either in one direction or the other. That is, the majority
Microchip Technology Inc.
of data will be transmitted (downloaded) from the
Primary Device (PDA) to the Secondary Device
INTRODUCTION (embedded system), or will be transmitted (uploaded)