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UG155 March 24, 2008
Conventions
R
Online Document
The following conventions are used in this document.
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}
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.
A ‘_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.
See “Title Formats” in
Chapter 1 for details.
Blue, underlined text
Hyperlink to a website (URL)
Go to w
ww.xilinx.com for the
latest speed files.
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