User Guide Conventions; Port And Attribute Names; Comma Definition; Typographical - Xilinx RocketIO X User Manual

User Guide Conventions

User Guide Conventions
This document uses the following conventions. An example illustrates each convention.

Port and Attribute Names

Input and output ports of the RocketIO X transceiver primitives are denoted in upper-case
letters. Attributes of the RocketIO X transceiver are denoted in upper-case letters with
underscores. Trailing numbers in primitive names denote the byte width of the data path.
These values are preset and not modifiable. When assumed to be the same frequency,
RXUSRCLK and TXUSRCLK are referred to as USRCLK and can be used interchangeably.
This also holds true for RXUSRCLK2, TXUSRCLK2, and USRCLK2.

Comma Definition

A comma is a "K" character used by the transceiver to align the serial data on a
byte/half-word boundary (depending on the protocol used), so that the serial data is
correctly decoded into parallel data.

Typographical

The following typographical conventions are used in this document:
RocketIO™ X Transceiver User Guide
UG035 (v1.5) November 22, 2004
Convention
Messages and prompts that
Courier font
the system displays
Literal commands that you
Courier bold
enter in a syntactical statement
Commands that you select
from a menu
Helvetica bold
Keyboard shortcuts
Variables in syntax statements
for which you must supply
values
Italic font References to other manuals
Emphasis in text
Optional entry / parameter;
Square brackets [ ] required in bus specifications,
such as bus[7:0]
A list of items from which you
Braces { }
must choose one or more
Separates items in a list of
Vertical bar |
choices
Repetitive material that has
Ellipsis . . .
been omitted
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Meaning or Use Example
speed grade: - 100
ngdbuild design_name
File → Open
Ctrl+C
ngdbuild design_name
See the Virtex-II Pro User Guide
for more information.
If a wire is drawn so that it
overlaps the pin of a symbol,
the two nets are not connected.
ngdbuild [ option_name ]
design_name
lowpwr ={on|off}
lowpwr ={on|off}
allow block block_name
loc1 loc2 ... locn;
R
23