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Overview

The Digilent JTAG-USB Cable provides a

quick and inexpensive USB 2.0 programming

solution for Digilent system boards. The cable

works with any USB-equipped computer and

attaches to system boards using a Digilent 6-

pin JTAG header.

The cable is ideal for notebook computers or

any computer without a parallel port.

It can program any Xilinx device with a

minimum I/O voltage of 1.8V, at speeds up to

ten times faster than a JTAG3 (or parallel 3)

cable.

Features:

• a Digilent 6-pin JTAG header

• speeds up to ten times faster than a

JTAG3 cable

• free JTAG programming software

available

• compatibility with any USB port.

Functional Description

The cable provides an easy and inexpensive

USB connection.

For JTAG programming, the cable’s firmware

drives the JTAG scan chain by transferring .bit

or .svf files. Digilent’s Adept software’s Export

program is needed for JTAG programming.

Export automatically detects devices in the

JTAG scan chain. For more information on

using Export see the Digilent Adept Reference

Manual.

Both the cable and the Adept software are fully

compatible with any Xilinx device on any circuit

board. See the Digilent Adept Reference

Manual for information on programming other

devices.

Before the cable can be used on a given

computer, it must be identified to the Adept

software by adding its serial number or

alphanumeric ID string to the device table in

the Adept software. Every cable is given a

unique serial number and default “DCabUsb”

ID string. The USB administrator tool in the

Adept software can automatically identify a

newly attached cable and add it to the device

table. Once the cable ID is in the device table,

it can be used to configure Xilinx devices.

To download the Adept software and the

Digilent Adept Reference Manual see

www.digilentinc.com.

Overview 1
Functional Description 1

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Seite 1 - Functional Description

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Digilent 250-003P Bedienungsanleitung

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