Design For Testability

Design For Testability (DFT) refers to those design practices that assist designers to reduce cost of test pattern generation, enhance fault coverage, and hence reduce defect levels at mass production.

GUC DFT methodology provides a complete solution including RAM BIST, ROM BIST, at-speed RAM BIST, regular scan, AC scan, scan compression, boundary scan (JTAG), and ATPG, to achieve ultra-high test coverage.

Advanced DFT Solution

 

Success Story

Process Gate Count Application DFT Feature
7nm 3.4B HPC

DC/AC Scan, HBM interposer test, MBIST,  IEEE 1149.1/1149.6, Fail core identification

7nm 2.75B Networking DC/AC Scan,  Fail core testing for logic redundancy, MBIST, TCAMBIST
12nm 1.25B AI DC/AC Scan,  Ultra-scan, @speed MBIST, SRAM repair
12nm 220M Camera DC/AC Scan for 800+ clock domains, @speed MBIST
16nm 1B HPC

DC/AC Scan, HBM interposer test, @speed MBIST, SRAM repair

16nm 20.1M AI DC/AC Scan, @speed MBIST, System BIST, IEEE 1149.1/1149.6
28nm 71M Networking

DC/AC Scan, @speed MBIST, System BIST,SRAM hard/soft repair

28nm 407M AI DC/AC Scan solution for 350+ tiles, Scan Compress, One chain for diagnosis, @speed MBIST
28nm 240M Networking

DC/AC Scan, @speed MBIST, SerDes AC Scan, IEEE 1149.1, eFuse Test

28nm 15M SSD

DC/AC Scan, MBIST,  DDR/ PCIe/ ONFi/ eFuse

28nm 100M SSD DC/AC Scan, MBIST, IEEE 1149.1, PCIe/ DDR loopback, Thermal sensor test
28nm 20M WiGig DC/AC Scan, Scan Compress, @speed MBIST, IEEE 1149.1, PCIe loopback, AFE loopback, Thermal sensor test
28nm 50M DSC DC/AC Scan, Scan Compress, @speed MBIST, IEEE 1149.1, PCIe/ DDR loopback
40nm 20M Cellular BB DC/AC Scan, MBIST, IEEE 1149.1, Power switch test, USB/ eFuse/ Codec/ ADC
40nm 60M LTE Baseband DC/DC/AC Scan, MBIST, IEEE 1149.1, SRAM repair
40nm 10M Display DC/AC Scan, MBIST, IEEE 1149.1, eDRAM repair