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AR# 21840

Virtex-4 IDELAY - What is correct value of each tap delay in the IDELAY?

描述


Keyword: Virtex-4, IDELAY, tap







General Description:

Table 34 of the Virtex-4 Data Sheet, v1.10, specifies that the IDELAY Chain Delay Resolution (TIDELAYRESOLUTION) is 75 ps. The IDELAY section of Virtex-4 Library Guide for HDL Designs states that each tap delay is calibrated to 78 ps. Which document is correct?

解决方案


The correct delay value of IDELAY tap can be found in the Virtex-4 Data Sheet. The data sheet is available at

http://www.xilinx.com/xlnx/xweb/xil_publications_display.jsp?sGlobalNavPick=&sSecondaryNavPick=&category=-1210771&iLanguageID=1

AR# 21840
日期 04/27/2012
状态 Archive
Type 综合文章
的页面