Xilinx SP601 User Manual download pdf (Page 8)

8 www.xilinx.com SP601 Hardware User Guide

UG518 (v1.1) August 19, 2009

Preface: About This Guide

Online Document

The following conventions are used in this document:

Italic font

Variables in a syntax statement

for which you must supply

values

ngdbuild design_name

References to other manuals

See the User Guide for more

information.

Emphasis in text

If a wire is drawn so that it

overlaps the pin of a symbol, the

two nets are not connected.

Dark Shading

Items that are not supported or

reserved

This feature is not supported

Square brackets [ ]

An optional entry or parameter.

However, in bus specifications,

such as bus[7:0], they are

required.

ngdbuild [option_name]

design_name

Braces { }

A list of items from which you

must choose one or more

lowpwr ={on|off}

Vertical bar |

Separates items in a list of

choices

lowpwr ={on|off}

Angle brackets < >

User-defined variable or in code

samples

<directory name>

Vertical ellipsis

.

.

.

Repetitive material that has

been omitted

IOB #1: Name = QOUT’

IOB #2: Name = CLKIN’

.

.

.

Horizontal ellipsis . . .

Repetitive material that has

been omitted

allow block block_name loc1

loc2 ... locn;

Notations

The prefix ‘0x’ or the suffix ‘h’

indicate hexadecimal notation

A read of address 0x00112975

returned 45524943h.

An ‘_n’ means the signal is

active low

usr_teof_n

is active low.

Convention Meaning or Use Example

Convention Meaning or Use Example

Blue text

Cross-reference link to a location

in the current document

See the section “Additional

Resources” for details.

Refer to “Title Formats” in

Chapter 1 for details.

Blue, underlined text

Hyperlink to a website (URL)

Go to http://www.xilinx.com

for the latest speed files.

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