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Search Tips

1) Selecting Where to Search

The default is to search through all available source documents. You may constrain your search, however, to only those sources next to which you place a checkmark. ()

2) Selecting What to Search for

You can search using only the checkboxes, or constrain your search further by entering your own keywords and advanced search language in the text box.

3) Seeing Your Results

Press the "Search!" button to see your results. The more matched words in the document, the higher the result ranking. Variations of the word (plural form, suffixes added or removed, etc.) are also included in the search.

Common Problems

If you are getting too many matches:

If you are getting too few matches:

Using the Checkboxes

You can focus your search using the checkboxes on the search forms. Selecting checkboxes from "Selecting Where to Search" limits your search to a specific web site or category of pages within a single web site. Selecting checkboxes from "Seeing Your Results" allows you to select topics of interest, and the search will find all matches using related keywords to your selected topic.

If you do not select any checkboxes the search assumes that all checkboxes are selected which means that your search is not focused to any source or topic. Once you select one or more checkboxes, the search will focus your search using only the selected checkboxes.

Advanced Search Language

You can create your own advanced query using the language described below.

Boolean logic, wildcards, and zone searching allow you to compose refined queries :

Boolean Logic

AND - Finds only pages which contain all search terms.

  • Example: pci AND xc5000
  • Effect: Narrows search results

    • OR - Finds pages which contain any one of the search terms.

  • Example: pinout OR footprint
  • Effect: Expands search results

    • ACCRUE (,) (smart OR) - Finds pages which contain either search term. Documents with both at the top of the results list.

  • Example: CLB ACCRUE TBUF
  • Example: CLB, TBUF
  • Example: CLB TBUF
  • Effect: Expands search results. Like OR, but the more instances of words found, the higher the ranking of the document.

    • NOT (modifier)- Use with the AND operator to exclude terms from your search.

  • Example: linkswitch AND <NOT> press release
  • Effect: Narrows search results

    • Wildcards

    * - Matches any number of characters.

  • Example: XC31* (find all XC3100 device family references)
  • Effect: Expands search results by matching more words.

    • ? - Matches one character

  • Example: XC3?42* (find only XC3042 and XC3142 references)
  • Effect: Matches more strings, but limits wildcarding by character length.

    • Zone Searching

    Zone searching permits you to limit your search by only searching in the titles or URLs of documents.

  • Example: pci <in> title
  • Effect: Narrows search by only searching title. You can also focus your search to only check for matches in the title of a document by selecting the Search In Titles Only radio button on your search form.

  • Example: url <contains> www.xilinx.com/partinfo/9572.pdf
  • Effect: Narrows search by only searching the URLs of the document.