STMicroelectronics TN1317 Self Test Configuration for SPC58xNx Device

Selelekela

Tokomane ena e fana ka litataiso mabapi le mokhoa oa ho hlophisa yuniti ea ho itlhahloba (STCU2) le ho qala ts'ebetso ea ho itlhahloba. STCU2 ho SPC58xNx sesebelisoa se laola ka bobeli Memory le Logic Built-In Self Test (MBIST le LBIST) ea sesebelisoa. Li-MBIST le li-LBIST li ka lemoha mefokolo e patehileng e amang mehopolo e sa tsitsang le li-module tsa logic. 'Mali o lokela ho ba le kutloisiso e hlakileng ea tšebeliso ea boitlhahlobo. Sheba Sehlomathiso sa Karolo ea A bakeng sa Acronyms, khutsufatso le litokomane tsa litšupiso bakeng sa lintlha tse ling.

Fetileview

• SPC58xNx e tšehetsa MBIST le LBIST ka bobeli.
• SPC58xNx e kenyelletsa:
  •  92 ho fokotsa mohopolo (ho tloha ho 0 ho isa ho 91)
  •  LBIST0 (ts'ireletso LBIST)
  •  6 LBIST bakeng sa tlhahlobo (1) (ho tloha ho 1 ho isa ho 6)

TLHOKOMELO

LBIST bakeng sa tlhahlobo ea mafu e lokela ho sebetsa ha koloi e le karacheng eseng ha ts'ebetso ea ts'ireletso e ntse e sebetsa. 'Mali a ka sheba lenane le felletseng la khaolo ea 7 (Tlhahiso ea sesebelisoa) ea bukana ea litšupiso ea RM0421 SPC58xNx.

Sebopeho sa boitlhahlobo

Ho itlhahloba ho ka etsoa ka marang-rang kapa ka ntle ho marang-rang.

Phetoho ea MBIST

• Ho fihlella khoebo e ntle ka ho fetisisa mabapi le tšebeliso le nako ea ts'ebetso, re khothaletsa ho arola li-MBIST ka likarolo tse 11. Likarolo tsa MBIST tsa karolo e ts'oanang li tsamaisana ka tjantjello.
• Likarolo tse 11 li sebetsa ka mokhoa o latellanang. Bakeng sa mohlalaampLe:
•  likarolo tsohle tsa MBIST tsa karohano_0 li qala ka ho tšoana;
•  ka mor'a ho bolaoa, likarolo tsohle tsa MBIST tsa karohano_1 li qala ka ho tšoana;
•  joalo-joalo.
• Lenane le felletseng la likarohano le li-MBIST le bonts'itsoe ka har'a buka e arohaneng le DCF Microsoft Excel® e kenyellelitsoeng files.

LBIST tlhophiso

• Boemong ba kantle ho marang-rang, hangata ke LBIST0 feela e sebetsang, ke eona tšireletso ea polokeho (ho netefatsa ASIL D). Ke BIST ea pele ho tlhophiso ea boitlhahlobo (pointer 0 bukeng ea LBIST_CTRL).
• Ka mokhoa oa inthaneteng mosebelisi a ka khetha ho tsamaisa li-LBIST tse ling (ho tloha ho 1 ho isa ho 6) bakeng sa ts'ebeliso ea tlhahlobo. Li kenyelletsa:
  •  LBIST1: gtm
  •  LBIST2: hsm, e rometsoe, 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: sethala
  •  LBIST6: can0, dma

Lethathamo la DCF bakeng sa tlhophiso ea offline

Li-MBIST le LBIST0 li ka sebetsa kantle ho marang-rang ho fihla ho 100 MHz joalo ka maqhubu a maholo. Buka ea mosebetsi ea DCF Microsoft Excel® e kenyellelitsoeng file e tlaleha lenane la DCF le tla hlophisoa molemong oa ho qala MBIST le LBIST nakong ea mohato oa ho qala (mokhoa o sa sebetseng). Ba nka hoo e ka bang 42 ms.

Bahlokomeli nakong ea ho itlhahloba

• Mekhahlelo e 'meli e fapaneng e ama ts'ebetso ea boitlhahlobo (Sheba bukana ea litšupiso ea RM0421 SPC58xNx).
•  Ho qala (ho kenya tlhophiso). SSCM (mokhoa o sa sebetseng) kapa software (mokhoa oa inthanete) e hlophisa li-BIST ka ho hlophisa STCU2.
•  Boiketsi ba ho etsa teko. STCU2 e etsa boitlhahlobo.
• Lintja tse peli tse fapaneng li shebile mekhahlelo ena.
•  Molebeli ea nang le likhoutu tse thata o beha leihlo mohato oa "ho qala". Ke "hardware watchdog" e hlophisitsoeng ho 0x3FF.
• Mosebedisi ha a kgone ho e fetola. Nako ea "watchdog" e thata e itšetlehile ka mokhoa oa ho sebetsa:
  •  IRC oscillator ka mokhoa oa offline
  •  Oache ea STCU2 ka mokhoa oa inthaneteng
• Watchdog timer (WDG) e beha leihlo "boits'ebetso ba ho itlhahloba". Ke "hardware watchdog" e ka lokisoang ke mosebelisi (rejisetara ea STCU_WDG). Mosebelisi a ka sheba boemo ba "STCU WDG" kamora ts'ebetso ea BIST ho ngoliso ea STCU_ERR_STAT (folakha ea WDTO).

Oache ea "STCU WDG" e ipapisitse le mokhoa oa ts'ebetso:

•  E ka lokisoa ke STCU_PLL (IRC kapa PLL0) ka mokhoa oa offline;
•  E ka hlophisoa ka software ka mokhoa oa inthaneteng.

E khatholla li-watchdog tse thata nakong ea ho qala

Nako ea ho qeta nako ea li-watchdog tse thata ke 0x3FF clock cycles. SSCM kapa software e tlameha hore nako le nako e khatholle balebeli ba likhoutu tse thata ka ho hlophisa konopo ea STCU2. Ho etsa ts'ebetso ena, mosebelisi o tlameha ho kenella lethathamong la lirekoto tsa DCF (mokhoa o sa sebetseng) kapa phihlello ea ho ngola ho lirekoto tsa STCU2 (mokhoa oa inthaneteng) ka ho ngolla ngoliso ea STCU2 key2. Tabeng ea BIST e kantle ho marang-rang, mongolo o le mong oa rekoto ea DCF o nka nako e ka bang 2. Kaha seboholi se nang le likhoutu tse thata se felloa ke nako ka mor'a linako tse 17, mosebelisi o tlameha ho se khatholla lirekoto tse ling le tse ling tse 1024 tsa DCF. Tlhokomeliso: The watchdog e felloa ke nako kamora 60 clock cycles. Mongolo o le mong oa DCF o nka nako ea lioache tse 1024. STCU17 e amohela lirekoto tse fihlang ho 2 tsa DCF pele li-hard-watchdog li felloa ke nako (60/1024 = 17). Tabeng ea BIST ea inthaneteng, nako ea ho khatholla (STCU60 key2 writing) e itšetlehile ka kopo.

Tlhophiso ea mokhoa oa inthaneteng

Boemong ba marang-rang, lenane la karohano ea MBIST le lula le tšoana le mefokolo e itseng ka lebaka la potoloho ea bophelo. Li-MBIST tsohle li ka sebetsa ka mokhoa oa inthaneteng feela ho tlhahiso ea ST le tlhahlobo ea ho hloleha (FA). Linakong tse ling tsa bophelo, HSM/MBIST le Flash MBIST ha li fumanehe. Tabeng ena, boholo ba maqhubu a MBIST ke 200 MHz 'me bo fanoa ke sys_clock. LBIST bakeng sa tlhahlobo e ka sebetsa ho fihla ho 50 MHz, ha LBIST 0 e ka fihla ho 100 MHz. Boemong boo, lirejisete tsa STCU2 li ka hlophisoa ka kholomo ea "register value" ea lenane la DCF. file.

Kakaretso
Ho SPC58xNx MBIST le LBIST li ka sebetsa. Nakong ea offline, LBIST0 le li-MBIST kaofela li ka sebetsa ho latela tlhophiso e arohaneng. Nakong ea marang-rang, LBIST ea tlhahlobo ea mafu e ka sebetsa le eona.

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Litokomane / Lisebelisoa

STMicroelectronics TN1317 Self Test Configuration for SPC58xNx Device [pdf] Bukana ea Mosebelisi TN1317, Self Test Configuration ea SPC58xNx Device, Configuration for SPC58xNx Device, Self Test Configuration, TN1317, Self Test

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