Comm Box DaVinci Manuel d'utilisateur télécharger pdf (Page 4)

COMMBOX PTY LTD | ABN: 431 583 817 05 | Telephone: +61 2 9975 6001 | Fax: +61 2 9975 2032

PO Box 6667, Frenchs Forest NSW 2086 Australia | www.commbox.com.au

AUSTRALIA, CHINA, MALAYSIA, SINGAPORE, KOREA, SOUTH AFRICA

Third Party Integration

The USB switcher is powered from the USB host(s) to which it is connected.

Control is via the 10 way IDC ribbon header.

Your 3

part controller needs two active low or TTL level outputs – the USB switcher will pull

them high to 3.3 volts via 20k ohms. To select hosts 2, 3 or 4, pull the lines low according to

the truth table below.

Connections and control truth table

Host 1

Host 2

Host 3

Host 4

Pin 5

Pin 6

Pin 9

GND

(Trace is Pin 1)

1 2 3 4

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Comm Box DaVinci Manuel d'utilisateur Page 4