Answers Database XC5200: Programmable keeper cells are automatically enabled when all buffers are in 3-state mode Record #1301 Product Family: Documentation Product Line: Data Book Product Part: Programmable Logic Data Book Problem Title: XC5200: Programmable keeper cells are automatically enabled when all buffers are in 3-state mode Problem Description: In "The Programmable Logic Data Book", 7/96 and 9/96, on page 4-194, in paragraph 2 of column 2, it reads: "Additionally, programmable keeper cells at the periphery can be enabled to retain the last valid lo gic level on the Long- lines when all buffers are in 3-state mode." Solution 1: This passage has been a cause of much confusion. The "program- mable keeper cells" mentioned in this passage are said to be "enabled", leading the reader to believe that he/she needs to turn on a switch in the software to activate these cells. This is not the case. Instead, these "programmable keeper cells" are automatically enabled by the software whenever all buffers are in 3-state mode. The reader does not need to worry about this. End of Record #1301 - Last Modified: 02/20/97 14:43

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