STMicroelectronics TN1317 Self Test Configuration for SPC58xNx Device
Intshayelelo
Olu xwebhu lubonelela ngezikhokelo malunga nendlela yokuqwalasela iyunithi yokulawula ukuzivavanya (STCU2) kwaye uqalise ukuphunyezwa kokuzivavanya. I-STCU2 kwisixhobo se-SPC58xNx silawula zombini iMemori kunye ne-Logic eyakhelwe-ngaphakathi yoVavanyo lwe-Self (MBIST kunye ne-LBIST) yesixhobo. I-MBISTs kunye ne-LBISTs ziyakwazi ukubona ukusilela okufihlakeleyo okuchaphazela iinkumbulo eziguqukayo kunye neemodyuli zengqiqo. Umfundi kufuneka abe nokuqonda okucacileyo kokusetyenziswa kokuzivavanya. Jonga iCandelo lesiHlomelo A kwii-Akhronimi, izifinyezo kunye namaxwebhu ereferensi ukuze ufumane iinkcukacha ezongezelelweyo.
Ngaphezuluview
- I-SPC58xNx ixhasa zombini i-MBIST kunye ne-LBIST.
- I-SPC58xNx ibandakanya:
- Iinkumbulo ezingama-92 (ukusuka ku-0 ukuya ku-91)
- LBIST0 (ukhuseleko LBIST)
- 6 LBIST yoxilongo(1) (ukusuka ku-1 ukuya ku-6)
LBIST
I-LBIST yokuxilongwa kufuneka iqhutywe xa isithuthi sisegaraji kwaye kungekhona ngelixa isicelo sokhuseleko sisebenza. Umfundi unokujonga uluhlu olupheleleyo kwisahluko 7 (Ubumbeko lwesixhobo) se-RM0421 SPC58xNx yereferensi yencwadana.
Ukuzivavanya uqwalaselo
Ukuzivavanya kunokuqhutywa kwimowudi ye-intanethi okanye ngaphandle kweintanethi.
Uqwalaselo lweMBIST
- Ukufikelela olona rhwebo lulungileyo ngokwemigaqo yokusetyenziswa kunye nexesha lokubulawa, sincoma ukwahlula ii-MBISTs zibe zii-11 zokwahlulahlula. Izahlulo ze-MBIST zokwahlulahlulwa okufanayo baleka ngokuhambelana.
- Izahlulo ezili-11 zisebenza ngendlela elandelelanayo. Umzekeloample:
- zonke izahlulo ze-MBIST zezokwahlulwa_0 ziqala ngaxeshanye;
- emva kokwenziwa kwazo, zonke izahlulo ze-MBIST zezocahlulo_1 ziqala ngokuhambelana;
- kwaye nakanjalo.
- Uluhlu olupheleleyo lwezahlulo kunye nee-MBISTs luboniswe kwi-split kunye ne-DCF ye-Microsoft Excel® incwadi yokusebenza eqhotyoshelweyo files.
LBIST uqwalaselo
- Kwimo engaxhunyiwe kwi-intanethi, ngokubanzi kuphela i-LBIST0 esebenzayo, leyo yi-bist yokhuseleko (ukuqinisekisa i-ASIL D). Yi-BIST yokuqala kuqwalaselo lokuzivavanya (isalathiso 0 kwirejista ye-LBIST_CTRL).
- Kwimo ye-intanethi umsebenzisi unokukhetha ukuqhuba ezinye ii-LBISTs (ukusuka kwi-1 ukuya kwi-6) ukuze kusetyenziswe ukuxilongwa. Ziquka:
- LBIST1: gtm
- LBIST2: hsm, ithunyelwe, 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, umgodi, ima, cmu_x, adgsar_ana_wrap_x
- LBIST5: iqonga
- LBIST6: can0, dma
Uluhlu lwe-DCF loqwalaselo ngaphandle kweintanethi
I-MBISTs kunye ne-LBIST0 zinokusebenza ngaphandle kweintanethi ukuya kuthi ga kwi-100 MHz njengobuninzi befrikhwensi. Incwadi yomsebenzi ye-DCF Microsoft Excel® iqhotyoshelwe file inika ingxelo yoluhlu lwe DCF oluza kuqwalaselwa ukuze kuqaliswe i MBIST kunye ne LBIST ngexesha lesigaba sokuqala (imo engasebenziyo). Bathatha malunga ne-42 ms.
Iimonitha ngexesha lokuzivavanya
- Izigaba ezibini ezahlukeneyo zinefuthe kuvavanyo lokuzivavanya (Jonga i-RM0421 SPC58xNx reference reference).
- Ukuqaliswa (uqwalaselo lokulayisha). I-SSCM (imo engasebenziyo) okanye isoftwe (imo ye-intanethi) iqwalasela ii-BIST ngokucwangcisa i-STCU2.
- Ukuzivavanya ngokwakho. I-STCU2 yenza uvavanyo lobuqu.
- Abalindi ababini abahlukeneyo babeka esweni ezi zigaba.
- I-hard-coded watchdog ibeka esweni isigaba "sokuqalisa". Yi-hardware watchdog elungiselelwe kwi-0x3FF.
- Umsebenzisi akakwazi ukuyiguqula. Iwotshi ye-watchdog enekhowudi enzima ixhomekeke kwindlela yokusebenza:
- I-oscillator ye-IRC kwimowudi engaxhunyiwe kwi-intanethi
- STCU2 iwotshi kwimowudi ye-intanethi
- I-Watchdog timer (WDG) ibeka esweni "ukuzivavanya execution". Yi-hardware watchdog elungiselelwa ngumsebenzisi (irejista ye-STCU_WDG). Umsebenzisi unokujonga imeko ye-"STCU WDG" emva kokuphunyezwa kwe-BIST kwirejista ye-STCU_ERR_STAT (iflegi ye-WDTO).
Iwotshi ye "STCU WDG" ixhomekeke kwindlela yokusebenza:
- Iqwalaselwe yi-STCU_PLL (IRC okanye i-PLL0) kwimo engaxhunyiwe kwi-intanethi;
- Iqwalaselwe ngesoftware kwimowudi ye-intanethi.
I-hard-coded watchdog ihlaziya ngexesha lokuqalisa
I-hard-coded watchdog timeout yi-0x3FF clock cycles. I-SSCM okanye isoftware kufuneka ngamaxesha athile ihlaziye i-hard-coded watchdog ngokucwangcisa i STCU2 key2. Ukwenza lo msebenzi, umsebenzisi kufuneka angenele uluhlu lweerekhodi ze-DCF (imodi engaxhunyiwe kwi-intanethi) okanye ukufikelela kokubhala kwiirejista ze-STCU2 (imodi ye-intanethi) ngokubhala kwirejista ye-STCU2 key2. Kwimeko ye-BIST engaxhunyiwe kwi-intanethi, ukubhala okukodwa kwerekhodi ye-DCF kuthatha malunga ne-17 imijikelo yewotshi. Ekubeni i-watchdog ene-hard-coded iphelelwa emva kwemijikelo yewotshi ye-1024, umsebenzisi kufuneka ayihlaziye zonke iirekhodi ze-DCF ze-60. Qaphela: Umlindi uphelelwa emva kwemijikelo yewotshi eyi-1024. Ukubhala kwe-DCF enye kuthatha imijikelo yewotshi eli-17. I-STCU2 yamkela ukuya kuthi ga kwiirekhodi ze-DCF ezingama-60 ngaphambi kokuba i-hard-watchdog iphelelwe lixesha (1024/17 = 60). Kwimeko ye-BIST ye-intanethi, ixesha lokuhlaziya (STCU2 key2 ukubhala) kuxhomekeke kwisicelo.
Uqwalaselo lwemowudi ye-Intanethi
Kwimo ye-intanethi uluhlu lwe-MBIST olwahlulahlulo luhlala lufana kunye nemida ethile ngenxa yomjikelo wobomi. Zonke i-MBISTs zinokusebenza kwimodi ye-intanethi kuphela kwimveliso ye-ST kunye nohlalutyo lokungaphumeleli (FA). Kweminye imijikelo yobomi, i-HSM/MBIST kunye neFlash MBIST azifumaneki. Kule meko, ubuninzi befrikhwensi ye-MBIST yi-200 MHz kwaye inikezelwa yi-sys_clock. I-LBIST yoxilongo inokuhamba iye kuthi ga kwi-50 MHz, ngelixa i-LBIST i-0 inokusebenza ukuya kuthi ga kwi-100 MHz. Kuloo meko, iirejista ze-STCU2 zinokumiselwa ngekholamu “yexabiso lokubhalisa” kuluhlu lweDCF. file.
Isishwankathelo
Kwi-SPC58xNx zombini i-MBIST kunye ne-LBIST zinokubaleka. Ngexesha le-offline, i-LBIST0 kunye nazo zonke ii-MBISTs zinokusebenza ngokoqwalaselo lokwahlula. Ngexesha lemowudi ye-intanethi, i-LBIST yoxilongo inokusebenza nayo.
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STMicroelectronics TN1317 Self Test Configuration for SPC58xNx Device [pdf] Incwadi yokusebenzisa TN1317, Self Test Configuration for SPC58xNx Device, Uqwalaselo lweSixhobo SPC58xNx, Self Test Configuration, TN1317, Self Test |
