UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 7379

EXEMPLAR 1999.1x: How do I set a slow slew rate when 'Fast Output Buffers' is selected?

Description

Keywords: Exemplar, slow, fast, slew, rate

Urgency: Standard

General Description:
How do I set a slow slew rate when 'Fast Ouput Buffers' is selected?

Solution

1

Solution 1:

After 'optimize' type in the following commands in the command window:

remove_attribute -name FAST -port port_name
remove_attribute -name FAST -instance instance_name

Instance name is the name of the OBUF/OFD component. The name of the instance
can be found by:

'Tools' -> 'View Gate Level Schematic' ('View Technology Schematic' button on
the tool bar).

Select the 'Output' tab and hit the 'Write' button.

2

Solution 2:

If after viewing the 'Technology Schematic' and the instance name appears to be
an arbitrary Exemplar assigned name then:

1. Deselect the 'Fast Output Buffers' option.
2. Set the FAST attribute on all the ports that require a fast slew rate:

set_attribute -name FAST -port port_name
AR# 7379
Date Created 08/26/1999
Last Updated 04/24/2007
Status Archive
Type General Article