Answers Database
 
 
 Virtex SelectMAP configuration: Is D0 pin the MSB or LSB 
 
 Record #7112
Product Family:  Hardware 
 
Product Line:  Virtex 
 
Product Part:  Virtex General Hardware 
 
Problem Title: 
Virtex SelectMAP configuration: Is D0 pin the MSB or LSB  
 
 
Problem Description: 
Urgency:  Standard 
 
General Description: 
In application note Xapp138 and Xapp151, there are references stating that 
D0 is MSB during configuration. Is D0 MSB or LSB during configuration? 
 
 
 
Solution 1: 
 
D0 is the MSB when the HEX file is used from the PROM File Formatter. The 
default for the HEX file is to Swap Bits.  When this option is deselected then 
D0 becomes the LSB. 
 
For more information, please also see Virtex configuration FAQ page at: 
http://support.xilinx.com/support/techsup/journals/config/vfaq.htm 
 
 
 
 End of Record #7112 - Last Modified: 08/09/99 14:33  |