Ingqwalaselo kufuneka inikwe PCB uyilo

Inkolelo engeyiyo 1: iimfuno zoyilo lwePCB kule bhodi aziphezulu, ke sebenzisa ucingo olucekeceke kunye nelaphu elizenzekelayo.

Gqabaza nge: Iintambo ezizenzekelayo kufuneka zihlale kwindawo enkulu ye-PCB, ngaxeshanye, amaxesha amaninzi ngaphezulu komngxunya wokubamba iintambo, omkhulu kwiimveliso zebatch, ixabiso lomenzi wePCB ngokujonga izinto ukongeza kwimicimbi yeshishini, bububanzi bomgca kunye nenani lemingxunya, echaphazela isivuno se-PCB kunye nokusetyenziswa kwenani elincinci, gcina iindleko zomthengisi, zikwanika ixabiso lokufumana isizathu.

Intsomi yesi-2: Le miqondiso yebhasi iyatsalwa ngabaxhathisi ukuze bazive bekhuselekile.

Izimvo: Iimpawu kufuneka zitsalwe phezulu nasezantsi ngenxa yezizathu ezininzi, kodwa ayizizo zonke. Tsala ukuxhathisa ukutsala unyuse unyuse umqondiso omnye wokufaka, okwangoku kungaphantsi kweempawu ezincinci, kodwa umqondiso wokuqhuba, okwangoku kuya kufikelela kwi-milliamperes, ngoku le nkqubo ihlala idatha yedilesi engama-32, kunokubakho i-244/245 emva ukubekwa bodwa kwebhasi kunye nolunye uphawu, ziyatsalwa, ii-watts ezimbalwa zokusebenzisa amandla kuxhathiso.

Amagqabantshintshi: Ukuba izibuko le-I / O elingasetyenziswanga linqunyanyisiwe, uphazamiseko oluncinci oluvela ngaphandle lunokuba ngumqondiso wokufakelwa kokuphindaphindwa, kunye nokusetyenziswa kwamandla kwezixhobo ze-MOS ngokusisiseko kuxhomekeke kwinani lesango elitshintshayo. Ukuba uyayinyusa, ipini nganye iya kuba nayo i-microamperes yangoku, ke eyona ndlela ilungileyo kukuseta ukuba kuphume (ewe, akukho nasinye isandi esiqhutywa ngaphandle).

Intsomi 4: Zininzi kakhulu iingcango kule FPGA, ke masiyenze

Izimvo: Ukusetyenziswa kwamandla kwe-FGPA kuhambelana nenani leeflops ezisetyenzisiweyo kunye nenani leeflips, ke ukusetyenziswa kwamandla kwemodeli efanayo ye-FPGA kungahluka ngamaxesha ali-100 kwiisekethi ezahlukeneyo ngamaxesha ahlukeneyo. Ukucutha inani leflip-flops ngesantya esiphezulu yeyona ndlela isisiseko yokunciphisa ukusetyenziswa kwamandla kwe-FPGA.

Intsomi 5: Ukusetyenziswa kwamandla kwezi chips zincinci kakhulu ukuba ungazikhathazi ngazo

Gqabaza nge: I-ABT16244 idla ngaphantsi kwe-1 ma ngaphandle komthwalo, kodwa isalathiso sayo kukuba isikhonkwane ngasinye sinokuqhuba umthwalo we-60mA (njengokumelana nokulinganisa amashumi e-ohm), oko kukuthi, ukusetyenziswa kwamandla okuphezulu kwe-60 * 16 = 960mA ngokupheleleyo umthwalo. Ewe kunjalo, kukuba umbane wamandla womelele kangangokuba ubushushu buwela emthwalweni.

Intsomi 6: Kukho imiqondiso emininzi yokulawula kwimemori, kufuneka ndisebenzise imiqondiso ye-OE kunye ne-WE kule bhodi, ukuze idatha iphume ngokukhawuleza xa kufundwa.

Amagqabantshintshi: Ukusetyenziswa kwamandla kwimemori eninzi kuya kuba ngaphezulu kwamaxesha e-100 xa ukhetho lwe-chip lusebenza (ngaphandle kwe-OE kunye ne-WE) kunokhetho lwe-chip alunjalo, ke ngoko i-CS kufuneka isetyenziselwe ukulawula i-chip xa kunokwenzeka kunye nobubanzi be-chip ukubetha kokukhetha kufuneka kuncitshiswe kangangoko kunokwenzeka ukuba ezinye iimfuno ziyafezekiswa.

Intsomi 7: Le miqondiso ikhawuleziswe njani? Logama nje ingumdlalo olungileyo, inokupheliswa

Amagqabantshintshi: Ukongeza kwiimpawu ezithile (ezinje nge-100BASE-T, i-CML), zigqityiwe, ukuba ayisiyonto inkulu kakhulu, ayifuni ukuba ingqinelane, nokuba umdlalo awungomdlalo ubalaseleyo. Njengoko ukuphuma kwe-TTL impedance ingaphantsi kwama-ohms angama-50, okanye nangama-20 ohm, ukuba kumdlalo omkhulu kangako ukuxhathisa kwabo, okwangoku kukhulu kakhulu, ukusetyenziswa kwamandla akwamkelekanga, kwaye isibonakaliso somthamo siya kuba sincinci kakhulu ukuba singasetyenziswa, yithi umndilili wokuphuma ukuveliswa kwenqanaba eliphezulu kunye nokusilela okuphantsi kombane kumaxesha aqhelekileyo akufani, nako akuhambelani ngokuchanekileyo. Ke ngoko, ukuthelekisa i-TTL, i-LVDS, i-422 kunye neminye imiqondiso kunokwamkelwa okoko kufezekisiwe.

Intsomi 8: Ukunciphisa ukusetyenziswa kwamandla ngumcimbi wabasebenzi behardware, kwaye isoftware ayinanto yakwenza nayo.

Gqabaza nge: I-Hardware liqonga nje, kodwa umboniso yisoftware, phantse yonke i-chip ekufikeleleni kwebhasi, yonke iflip yomqondiso iphantse ilawulwe yisoftware. Ukuba isoftware inganciphisa amaxesha okufikelela kwimemori yangaphandle (ukusetyenziswa okungaphezulu kweerejista eziguquguqukayo, ukusetyenziswa okungakumbi kwe-CACHE yangaphakathi, njl.) iibhodi ezithile ziya kwenza igalelo elikhulu ekunciphiseni ukusetyenziswa kwamandla