Search found 109 matches

by iSTART
23 Apr 2021, 16:19
Forum: EZ-BIST
Topic: Halt at ICG while auto clock tracing
Replies: 0
Views: 3761

Halt at ICG while auto clock tracing

[Question] While executing auto clock tracing in EZ-BIST, it will be halted if trace to ICG. [Answer] While executing auto clock tracing, designer has to define ICG information in BFL file like following figure. https://forum.istart-tek.com/ext/dmzx/fileupload/file-files/51/f57f018/d288bd5/dce67b8b...
by iSTART
23 Apr 2021, 16:16
Forum: EZ-BIST
Topic: Formality checking
Replies: 0
Views: 3695

Formality checking

[Question] If designer wants to do formality checking to compare the functionality of design with/without MBIST, how to do it?

[Answer] To do formality checking with or without MBIST, designer just needs to tie TDI signal to 0. In this condition, MBIST function will not execute.
by iSTART
23 Apr 2021, 16:10
Forum: EZ-BIST
Topic: How to get diagnosis data & analysis?
Replies: 0
Views: 3745

How to get diagnosis data & analysis?

[Question] How to get diagnosis data and analysis? [Answer] If designer enable diagnosis function. EZ-BIST diagnosis data will generate and output from TDO port to ATE equipment. Testing engineer can collect TDO data after capture_DIAG_DR and then analysis the output data. https://forum.istart-tek....
by iSTART
23 Apr 2021, 15:49
Forum: EZ-BIST
Topic: Do MBIST and normal function use the same data path?
Replies: 0
Views: 3764

Do MBIST and normal function use the same data path?

[Question] After inserting iSTART MBIST into IC, whether MBIST and normal function use the same data path? [Answer] If memory without test port, after inserting MBIST into memory, it will add one more MUX in front of memory. This MUX can switch the data path between MBIST or normal function. So, wh...
by iSTART
23 Apr 2021, 15:45
Forum: EZ-BIST
Topic: How to execute BIST testing?
Replies: 0
Views: 3758

How to execute BIST testing?

[Question] How does EZ-BIST execute memory testing? Are one by one controller or all controllers execute memory testing together? [Answer] Through SDI testing command, testing engineer can specify individual controller to do memory testing. Or can specify all controllers to do memory testing. Actua...
by iSTART
23 Apr 2021, 14:13
Forum: NVM
Topic: NVM trimming implementation
Replies: 0
Views: 6602

NVM trimming implementation

[Question] In your NVM solution, how does iSTART fulfill testing analog trimming voltage function? [Answer] About adjust NVM analog trimming voltage, through tool’s interface, testing engineer can use specified testing command to adjust the register of trimming data till meet expected analog voltag...
by iSTART
23 Apr 2021, 14:08
Forum: START
Topic: How to reorganize memory grouping?
Replies: 0
Views: 3794

How to reorganize memory grouping?

According to design requirements, for example, testing power supply, memory location …etc., customers need particular memory grouping to meet their design requirements. In START tool, designers can arrange memory grouping through reorganizing meminfo file. The following shows the meminfo data forma...
by iSTART
23 Apr 2021, 14:03
Forum: START
Topic: Area comparison in several BIST conditions
Replies: 0
Views: 3687

Area comparison in several BIST conditions

Following comparisons show the MBIST’s area in different conditions. Following table only show area of MBIST and MBISR and enable full function diagnosis only. Therefore, the area’s increasing rate is higher than expectation. https://forum.istart-tek.com/ext/dmzx/fileupload/file-files/51/6f50344/40...
by iSTART
23 Apr 2021, 13:52
Forum: NVM
Topic: NVM Testing Platform features
Replies: 0
Views: 1938

NVM Testing Platform features

iSTART supports MTP test platform. Following show the platform features:  Clock Assumption  - System: 16.6MHz  - JTAG: 10MHz  Support configurable to 8kx16 MTP size  IEEE1149.7 interface  - ICG (Integrated Clock Gating) cell are used to generate tck in IEEE1149.7 wrapper. Before synthesis, li...
by iSTART
21 Apr 2021, 08:34
Forum: EZ-BIST
Topic: SDC file cannot be recognized
Replies: 0
Views: 1969

SDC file cannot be recognized

[Question] In BFL flow, if BFL does not define clock domain, SDC file could not be recognized by EZ-BIST tool and no error report.

[Answer] To use SDC file in BFL stage, auto clock trace should turn on in BFL file. Please confirm if clock trace turns on.