TWI270768B - Method and apparatus for secure scan testing - Google Patents

Method and apparatus for secure scan testing Download PDF

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Publication number
TWI270768B
TWI270768B TW092110016A TW92110016A TWI270768B TW I270768 B TWI270768 B TW I270768B TW 092110016 A TW092110016 A TW 092110016A TW 92110016 A TW92110016 A TW 92110016A TW I270768 B TWI270768 B TW I270768B
Authority
TW
Taiwan
Prior art keywords
scan
processor
test
signal
data
Prior art date
Application number
TW092110016A
Other languages
English (en)
Chinese (zh)
Other versions
TW200400431A (en
Inventor
Thomas Tkacik
John E Spittal Jr
Jonathan Lutz
Lawrence Case
Douglas Hardy
Original Assignee
Freescale Semiconductor Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Freescale Semiconductor Inc filed Critical Freescale Semiconductor Inc
Publication of TW200400431A publication Critical patent/TW200400431A/zh
Application granted granted Critical
Publication of TWI270768B publication Critical patent/TWI270768B/zh

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
    • G06F21/75—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by inhibiting the analysis of circuitry or operation
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/317—Testing of digital circuits
    • G01R31/31719—Security aspects, e.g. preventing unauthorised access during test
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/317—Testing of digital circuits
    • G01R31/3181—Functional testing
    • G01R31/3185—Reconfiguring for testing, e.g. LSSD, partitioning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/317—Testing of digital circuits
    • G01R31/3181—Functional testing
    • G01R31/3185—Reconfiguring for testing, e.g. LSSD, partitioning
    • G01R31/318516—Test of programmable logic devices [PLDs]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/317—Testing of digital circuits
    • G01R31/3181—Functional testing
    • G01R31/3185—Reconfiguring for testing, e.g. LSSD, partitioning
    • G01R31/318533—Reconfiguring for testing, e.g. LSSD, partitioning using scanning techniques, e.g. LSSD, Boundary Scan, JTAG
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/317—Testing of digital circuits
    • G01R31/3181—Functional testing
    • G01R31/3185—Reconfiguring for testing, e.g. LSSD, partitioning
    • G01R31/318533—Reconfiguring for testing, e.g. LSSD, partitioning using scanning techniques, e.g. LSSD, Boundary Scan, JTAG
    • G01R31/318544—Scanning methods, algorithms and patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Software Systems (AREA)
  • Tests Of Electronic Circuits (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • Storage Device Security (AREA)
TW092110016A 2002-04-30 2003-04-29 Method and apparatus for secure scan testing TWI270768B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/135,877 US7185249B2 (en) 2002-04-30 2002-04-30 Method and apparatus for secure scan testing

Publications (2)

Publication Number Publication Date
TW200400431A TW200400431A (en) 2004-01-01
TWI270768B true TWI270768B (en) 2007-01-11

Family

ID=29249555

Family Applications (1)

Application Number Title Priority Date Filing Date
TW092110016A TWI270768B (en) 2002-04-30 2003-04-29 Method and apparatus for secure scan testing

Country Status (9)

Country Link
US (2) US7185249B2 (enExample)
EP (1) EP1499906B1 (enExample)
JP (1) JP2006505798A (enExample)
KR (1) KR100966661B1 (enExample)
CN (1) CN100381834C (enExample)
AU (1) AU2003224959A1 (enExample)
DE (1) DE60303126T2 (enExample)
TW (1) TWI270768B (enExample)
WO (1) WO2004051294A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI550399B (zh) * 2014-01-28 2016-09-21 豪威科技股份有限公司 用以在作業系統中掃描測試閒置功能單元之系統及方法

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TWI550399B (zh) * 2014-01-28 2016-09-21 豪威科技股份有限公司 用以在作業系統中掃描測試閒置功能單元之系統及方法

Also Published As

Publication number Publication date
WO2004051294A1 (en) 2004-06-17
US7185249B2 (en) 2007-02-27
EP1499906A1 (en) 2005-01-26
DE60303126T2 (de) 2006-07-20
TW200400431A (en) 2004-01-01
JP2006505798A (ja) 2006-02-16
US20070226562A1 (en) 2007-09-27
US7725788B2 (en) 2010-05-25
EP1499906B1 (en) 2006-01-04
DE60303126D1 (de) 2006-03-30
KR20040104678A (ko) 2004-12-10
KR100966661B1 (ko) 2010-06-29
CN1650183A (zh) 2005-08-03
US20030204801A1 (en) 2003-10-30
CN100381834C (zh) 2008-04-16
AU2003224959A1 (en) 2004-06-23

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