Xilinx 1000BASE-X - Manual (Page 17)

Ethernet 1000BASE-X PCS/PMA or SGMII v9.1 www.xilinx.com 19
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
45524943 h.
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 www.xilinx.com for the
latest speed files.