STMicroelectronics TN1317 Self Test Configuration ya SPC58xNx Chipangizo

Mawu Oyamba

Chikalatachi chimapereka malangizo okhudza momwe mungakhazikitsire gawo lodziyesera nokha (STCU2) ndikuyamba kudziyesa nokha. STCU2 pa chipangizo cha SPC58xNx imayang'anira zonse Memory ndi Logic Built-In Self Test (MBIST ndi LBIST) ya chipangizocho. Ma MBIST ndi ma LBIST amatha kuzindikira zolephera zobisika zomwe zimakhudza kukumbukira kosasinthika ndi ma logic modules. Owerenga ayenera kumvetsetsa bwino momwe angagwiritsire ntchito kudziyesa. Onani Zakumapeto A Gawo la Ma Acronyms, mawu achidule ndi zikalata zolozera kuti mumve zambiri.

Zathaview

• SPC58xNx imathandizira MBIST ndi LBIST.
• SPC58xNx ikuphatikiza:
  •  92 kukumbukira kukumbukira (kuchokera 0 mpaka 91)
  •  LBIST0 (chitetezo LBIST)
  •  6 LBIST ya matenda (1) (kuyambira 1 mpaka 6)

LBIST

LBIST yoyezetsa matenda iyenera kuthamanga pamene galimoto ili mu garaja osati pamene chitetezo chikugwira ntchito. Wowerenga atha kuwona mndandanda wathunthu mumutu 7 (Masinthidwe a Chipangizo) cha RM0421 SPC58xNx buku lofotokozera.

Kudziyesera nokha kasinthidwe

Kudziyesa nokha kumatha kuchitika pa intaneti kapena pa intaneti.

Kusintha kwa MBIST

• Kuti tikwaniritse malonda abwino kwambiri pazakudya ndi nthawi yopha, timalimbikitsa kugawa ma MBIST m'magawo 11. Magawo a MBIST a magawo omwewo amayendera limodzi.
• Magawo 11 amayenda motsatana. Za exampLe:
•  magawo onse a MBIST omwe agawanika_0 amayambira limodzi;
•  zitatha kuphedwa, magawo onse a MBIST agawidwe_1 amayamba kufananiza;
•  ndi zina zotero.
• Mndandanda wathunthu wa magawo ndi ma MBIST akuwonetsedwa mugawidwe ndi DCF Microsoft Excel® workbook yophatikizidwa files.

Kusintha kwa LBIST

• Popanda intaneti, nthawi zambiri LBIST0 ndiyomwe imathamanga, ndiye chitetezo (kutsimikizira ASIL D). Ndilo BIST yoyamba pakudziyesera nokha (polozera 0 mu kaundula wa LBIST_CTRL).
• Pa intaneti wogwiritsa ntchito amatha kusankha kuyendetsa ma LBIST ena (kuyambira 1 mpaka 6) kuti agwiritse ntchito matenda. Zikuphatikizapo:
  •  LBIST1: gtm
  •  LBIST2: hsm, kutumiza, emios0, psi5, dspi
  •  LBIST3: can1, flexray_0, memu, emios1, psi5_0, fccu, ethernet1, adcsd_ana_x, crc_0, crc_1, fosu, cmu_x, bam, adcsd_ana_x
  •  LBIST4: psi5_1, ethernet0,adcsar_dig_x, adcsar_dig_x, iic, dspi_x, adcsar_seq_x, adcsar_seq_x, linlfex_x, pit, ima, cmu_x, adgsar_ana_wrap_x
  •  LBIST5: nsanja
  •  LBIST6: can0, dma

Mndandanda wa DCF kuti musamangidwe pa intaneti

Ma MBIST ndi LBIST0 amatha kuthamanga pa intaneti mpaka 100 MHz ngati ma frequency max. Buku lantchito la DCF Microsoft Excel® lophatikizidwa file lipoti mndandanda wa DCF womwe uyenera kukonzedwa kuti uyambitse MBIST ndi LBIST panthawi yoyambira (mode yapaintaneti). Iwo amatenga pafupifupi 42 ms.

Oyang'anira panthawi yodziyesa

• Magawo awiri osiyana amakhudza kudziyesa nokha (Onani RM0421 SPC58xNx buku lofotokozera).
•  Kuyambitsa (kutsitsa kosintha). SSCM (mode yapaintaneti) kapena pulogalamu (paintaneti) imakonza ma BIST pokonza STCU2.
•  Kudziyesera nokha. STCU2 imadziyesa yokha.
• Agalu awiri osiyana amawunika magawo awa.
•  Woyang'anira wokhazikika amayang'anira gawo la "kuyambitsa". Ndi gulu loyang'anira zida zokhazikitsidwa pa 0x3FF.
• Wogwiritsa sangathe kusintha. Wotchi ya wolondera wokhazikika imatengera momwe amagwirira ntchito:
  •  IRC oscillator mumayendedwe osalumikizidwa
  •  STCU2 wotchi pa intaneti
• Watchdog timer (WDG) imayang'anira "kudziyesa nokha". Ndi gulu loyang'anira zida zosinthika ndi wogwiritsa ntchito (STCU_WDG registry). Wogwiritsa atha kuyang'ana momwe "STCU WDG" itatha kuchita BIST mu STCU_ERR_STAT kaundula (mbendera ya WDTO).

Wotchi ya "STCU WDG" imatengera mawonekedwe ogwiritsira ntchito:

•  Imasinthidwa ndi STCU_PLL (IRC kapena PLL0) munjira yopanda intaneti;
•  Ndi configurable ndi mapulogalamu mu mode Intaneti.

Woyang'anira wokhazikika amatsitsimutsanso panthawi yoyambitsa

Nthawi yomaliza yoyang'anira ndi 0x3FF wotchi. SSCM kapena pulogalamuyo iyenera kutsitsimutsa nthawi ndi nthawi woyang'anira wokhazikika pokonza STCU2 key2. Kuti achite izi, wogwiritsa ntchitoyo ayenera kusokoneza mndandanda wa zolemba za DCF (mawonekedwe opanda intaneti) kapena zolembera zolembera STCU2 (mawonekedwe a intaneti) ndikulembera ku STCU2 key2 registry. Pankhani ya BIST yapaintaneti, kulemba kamodzi kokha ka rekodi ya DCF kumatenga pafupifupi mawotchi 17. Popeza wolondera wokhazikika kwambiri amatha kugwira ntchito pambuyo pa mawotchi 1024, wogwiritsa ntchitoyo ayenera kutsitsimutsa ma rekodi 60 aliwonse a DCF. Zindikirani: Woyang'anirayo amatha ntchito pambuyo pa mawotchi 1024. Kulemba kwa DCF kamodzi kumatenga mawotchi 17. STCU2 imavomereza mpaka 60 zolemba za DCF isanathe (1024/17 = 60). Pankhani ya BIST yapaintaneti, nthawi yotsitsimula (STCU2 key2 kulemba) imadalira kugwiritsa ntchito.

Online mode kasinthidwe

Pa intaneti mndandanda wa MBIST wogawanika umakhalabe womwewo ndi zolepheretsa zina chifukwa cha moyo. Ma MBIST onse amatha kuthamanga pa intaneti pokhapokha mu ST production and failure analysis (FA). Muzochitika zina zamoyo, HSM/MBIST ndi Flash MBIST sizipezeka. Pankhaniyi, ma frequency apamwamba a MBIST ndi 200 MHz ndipo amaperekedwa ndi sys_clock. LBIST yowunikira imatha kuthamanga mpaka 50 MHz, pomwe LBIST 0 imatha kuthamanga mpaka 100 MHz. Zikatero, zolembera za STCU2 zitha kukhazikitsidwa ndi "register value" pamndandanda wa DCF. file.

Chidule
Mu SPC58xNx onse MBIST ndi LBIST amatha kuthamanga. Munthawi yopanda intaneti, LBIST0 ndi ma MBIST onse amatha kuthamanga molingana ndi kugawanika. Munthawi yapaintaneti, LBIST yoyezetsa matenda imathanso kuthamanga.

Appendix A Acronyms, achidule ndi zolembedwa

Acronyms

Zikalata zolozera

Mbiri yokonzanso zolemba

Chidziwitso Chofunika - Chonde werengani mosamala

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Zolemba / Zothandizira

STMicroelectronics TN1317 Self Test Configuration ya SPC58xNx Chipangizo [pdf] Buku Logwiritsa Ntchito TN1317, Self Test Configuration ya SPC58xNx Chipangizo, Kusintha kwa SPC58xNx Chipangizo, Kudziyesa Kokha, TN1317, Kudziyesa

Maumboni

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