Reusable, Low-cost, and Flexible Multidrop System JTAG Architecture

Author

Lihn, Hung-chi

Author_Institution

Brocade Commun. Syst., Inc., San Jose, CA

fYear

2006

fDate

Oct. 2006

Firstpage

1

Lastpage

10

Abstract

A reusable, low-cost, and flexible multidrop system JTAG architecture has been developed at Brocade as an alternative to more expensive commercial solutions. This architecture allows JTAG operations to be driven by a local on-board processor or an external host. An add-drop network design allows all on-board JTAG devices to be grouped into several smaller chains and enables the chains to be combined flexibly for various JTAG operations. By implementing this architecture in a low-cost complex programmable logic device (CPLD), it has been used in stand-alone single-board systems as well as complex multiboard chassis systems at Brocade

Keywords

integrated circuit testing; programmable logic devices; reconfigurable architectures; Brocade; CPLD; JTAG architecture; add-drop network design; complex multiboard chassis systems; complex programmable logic device; flexible multidrop system; local on-board processor; low-cost multidrop system; reusable multidrop system; Automatic testing; Central Processing Unit; Computer architecture; Control systems; Costs; Field programmable gate arrays; Ice; Product design; Protocols; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Test Conference, 2006. ITC '06. IEEE International

Conference_Location

Santa Clara, CA

ISSN

1089-3539

Print_ISBN

1-4244-0292-1

Electronic_ISBN

1089-3539

Type

conf

DOI

10.1109/TEST.2006.297621

Filename

4079299