Answers Database


9500 datasheet - What is the "block software selectable" option for pullup resistors?


Record #5921

Product Family: Hardware

Product Line: 9500

Product Part: 9500

Problem Title:

9500 datasheet - What is the "block software selectable" option for pullup resistors?


Problem Description:

Urgency:    Standard

General Description: The footnote in the datasheet reads:
"Pull-up resistors are used to prevent floating pins during
programming and other times. They are disabled during normal
operations. They may be enabled/disabled in block software
selectable."

So what is this block software selectable option?



Solution 1:

This is a misprint in the databook. There is no block selectable option
in the CPLD solution. This documentation error exists in version 3 and 4
of the 9500 datasheet.





End of Record #5921 - Last Modified: 07/23/99 17:33

For the latest news, design tips, and patch information on the Xilinx design environment, check out the Technical Tips!