Maxim HFRD-34.0 manual Table of Contents, Features, Overview, 4 x 4 DVI KVM Switch

1 Table of Contents

2.	Features		2
3.	Overview		2
4.	Application Diagrams		3
5.	Functional Diagrams		4
6. IC Summary			7
7.	Navigation Menu		12
8.	Schematics, Component List and
	Layout Drawings		15
9.	Gerber Files and Firmware		15
10.		Design Notes	15
11.		Evaluation/Use Notes	16
12.		Layer Profile	16
13.		Board Dimensions	17

2Features

∙4 x 4 video, audio, and USB switch

∙Fully buffered signals for extended reach

∙Supports DVI resolutions up to 1920 x 1200 per port

∙Simple navigation switch/LCD control

∙DVI data-input equalization and adjustable data-output preemphasis

∙Schematics and Bill of Materials provided

∙Firmware and Gerber files available

Reference Design HFRD-34.0 (Rev.3, 05/08)

4 x 4 DVI™ KVM Switch

3 Overview

High-Frequency Reference Design (HFRD)-34.0 is a fully buffered 4 x 4 DVI KVM switch. The design switches high-resolution DVI video (up to 1920 x 1200 resolution), analog audio, and USB signals from one to four inputs to one to four outputs. HFRD-34.0 supports both video and audio fanout operation (one source to multiple outputs). The reference design also provides 1:2 hubs on each USB port for keyboard and mouse connections of up to four different users.

All signals are fully buffered, allowing extended connection distances. Additionally, equalization is provided on all DVI data input signals and adjustable preemphasis on all DVI data outputs. All control and configuration selections are made through a simple navigational switch and LCD display.

This document provides an overview of the design and operation of HFRD-34.0.

Maxim Integrated Products

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