Answers Database
CPLD :XC9500/XL: When can the XC9500 internal IOB pullups be accessed?
Record #1603
Product Family: Hardware
Product Line: 9500
Product Part: 9500
Problem Title:
CPLD :XC9500/XL: When can the XC9500 internal IOB pullups be accessed?
Problem Description:
Urgency: Standard
General Description:
There is a pullup component in the Schematic Library for 9500/XL.
How do I use this?
Solution 1:
In the XC9500 IOBs there is an internal pullup that becomes active
during power-up, device configuration, and Intest only.
These pullups cannot be accessed or activated during
normal operation.
The reason why the component exists at all is for portability
between CPLD and FPGA designs.
Solution 2:
End of Record #1603 - Last Modified: 12/09/99 13:50 |
