Analog Devices SHARC DSP Glueless UART Implementation Application Note

Technical notes on using Analog Devices' DSP components and development tools, presenting the implementation of a glueless UART using the SHARC® DSP SPORTs.

Brand: Analog Devices
Category: Other Electronics
Document type: Application Note
Language: English
Pages: 21
File format: PDF
File size: 175 KB
Published: 03 August, 2012
Updated: 28 September, 2023
MD5 checksum: 0EBAC5E66FC5CB8E1AF8C4732CFC720C
PDF: Analog Devices SHARC DSP Glueless UART Implementation Application Note PDF

About this manual

This document details the implementation of a glueless UART using the Synchronous Serial Ports (SPORTs) on Analog Devices SHARC DSPs. It covers both hardware configuration for connecting to UARTs, EIA-232 (RS-232) devices, and MIDI interfaces, as well as the necessary software setup. The solution supports full-duplex asynchronous serial communication with data rates up to 115,200 bps and beyond.

What's inside

Introduction
Asynchronous SPORT Transmitter
Asynchronous SPORT Receiver
Hardware Overview: UART
Hardware Overview: EIA-232
Software Overview
Driver Function Prototypes

Specifications

Max Data Rate	115,200 bps
Software Overhead	less than 1 MIP
Receive Clock Rate	3x Bit Rate

Frequently asked questions

What is the minimum software overhead for full-duplex operation?

The implementation requires less than 1 MIP for full-duplex operation at 115,200 bps.

How is the receive clock configured for asynchronous data?

The receive clock must be set to three times the desired bit rate to over-sample the incoming data.

Can this interface support EIA-232 devices?

Yes, the interface can communicate with EIA-232 (RS-232) devices using an RS-232 interface device.

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