Entsha kunye neNqanaba kwi-TCAN1042VDRQ1 Izixhobo zombane eziDityanisiweyo zeSekethe ye-Ics Imvelaphi 1- 7 Ukusebenza kwenkonzo yoLuhlu lwe-BOM enye
Iimpawu zeMveliso
| UHLOBO | INKCAZO |
| Udidi | IiSekethe eziDityanisiweyo (ICs) |
| Mfr | Texas Instruments |
| Uthotho | Iimoto, AEC-Q100 |
| Iphakheji | Iteyiphu & neReel (TR) Sika iTape (CT) Digi-Reel® |
| SPQ | 2500 T&R |
| Ubume beMveliso | Iyasebenza |
| Uhlobo | I-Transceiver |
| Umgaqo-nkqubo | Ibhasi ye-CAN |
| Inani labaqhubi/abamkeli | 1/1 |
| I-Duplex | - |
| Data Rate | 5Mbps |
| Voltage - Unikezelo | 4.5V ~ 5.5V |
| Ubushushu bokusebenza | -55°C ~ 125°C |
| Uhlobo lokuNqamisa | INtaba engaphezulu |
| Ipakethe / Ityala | 8-SOIC (0.154", 3.90mm Ububanzi) |
| Supplier Device Package | 8-SOIC |
| Inombolo yeMveliso esisiseko | I-TCAN1042 |
Le ntsapho ye-CAN ye-transceiver ihambelana ne-ISO 1189-2 (2016) ye-CAN yesantya esiphezulu (i-Controller Area Network) umgangatho womzimba womzimba.Zonke izixhobo zenzelwe ukusetyenziswa kwiinethiwekhi ze-CAN FD kunye namazinga edatha ukuya kwi-2Mbps (megabits ngesekhondi).Izixhobo ezine-"G" suffix ziyilelwe uthungelwano lwe-CAN FD kunye namazinga edatha ukuya kuthi ga kwi-5Mbps, kunye nezixhobo ezine-"V" isimamva esine-suffix encedisayo yokuguqulwa kwenqanaba le-I / O (ukuseta i-pin pin threshold kunye nenqanaba lemveliso ye-RDX. ).Olu luhlu lubonisa imowudi yokulinda yamandla aphantsi kunye nezicelo zokuvuka ezikude.Ukongeza, zonke izixhobo ziquka inani leempawu zokukhusela ukuphucula isixhobo kunye nokuzinza kwe-CAN.
Le ntsapho ye-CAN ye-transceiver ihambelana ne-ISO 1189-2 (2016) ye-CAN yesantya esiphezulu (i-Controller Local Area Network) umgangatho womzimba womzimba.Zonke izixhobo zenzelwe ukusetyenziswa kwiinethiwekhi ze-CAN FD kunye namazinga edatha ukuya kwi-2Mbps (megabits ngesekhondi).Izixhobo ezine-"G" suffix ziyilelwe uthungelwano lwe-CAN FD kunye namazinga edatha ukuya kuthi ga kwi-5Mbps, kunye nezixhobo ezine-"V" isimamva esine-suffix encedisayo yokuguqulwa kwenqanaba le-I / O (ukuseta i-pin pin threshold kunye nenqanaba lemveliso ye-RDX. ).Olu luhlu lubonisa imowudi yokulinda yamandla aphantsi kunye nezicelo zokuvuka ezikude.Ukongezelela, zonke izixhobo ziquka inani leempawu zokukhusela ukuphucula ukuzinza kwesixhobo kunye ne-CAN.
Yintoni i-CAN transceiver?
I-transceiver ye-CAN yi-232- okanye i-485-like converter chip umsebenzi wayo oyintloko kukuguqula isibonakaliso se-TTL somlawuli we-CAN kwisibonakaliso esahlukileyo sebhasi ye-CAN.
Yintoni CAN isilawuli TTL iimpawu?
Abalawuli be-CAN banamhlanje badityaniswa ngokubanzi kunye ne-MCU kwaye ukuhambisa kwabo kunye nokufumana imiqondiso ye-TTL yi-MCU pin (phezulu okanye ephantsi) imiqondiso.
Ngaphambili bekukho abalawuli be-CAN abahlukeneyo kunye ne-CAN network node yayiza kuba neechips ezintathu: i-MCU chip, isilawuli se-CAN, kunye ne-CAN transceiver.Ngoku zimbini zokuqala ezidityanisiweyo kunye (jonga umfanekiso ekuqaleni kwenqaku).
Iimpawu zegalelo
Kwii-transceivers ze-CAN ezizimeleyo, igalelo libhekisela ngokukodwa kwiimpawu zegalelo kwicala lomlawuli we-CAN woxhulumaniso, olubandakanya igalelo lamandla kunye negalelo lomqondiso.
Ngokuxhomekeke kwi-CAN yombane we-interface yomlawuli imodyuli ye-CAN ye-3.3V okanye i-5V enamandla ingakhethwa.Uluhlu lwegalelo oluqhelekileyo lwemodyuli ekwanti ye-CAN yi-VCC ± 5%, ikakhulu ithathela ingqalelo ukuba inqanaba lebhasi ye-CAN linokugcinwa ngaphakathi koluhlu lwexabiso eliqhelekileyo kunye nokwenza ukuba i-chip ye-CAN yesibini isebenze malunga nombane wobonelelo lwegama.
Kwi-CAN transceiver chips eyahlukileyo, i-VIO pin ye-chip kufuneka idityaniswe kwi-voltage yereferensi efanayo kunye nenqanaba lesignali ye-TXD ukuze ihambelane nenqanaba lesignali, okanye ukuba akukho pin ye-VIO, inqanaba lomqondiso kufuneka ligcinwe ngokuhambelana neVCC. .Xa usebenzisa uchungechunge lwe-CTM i-transceivers ezizimeleyo ezizimeleyo kuyimfuneko ukufanisa inqanaba lesignali ye-TXD kunye ne-voltage yokubonelela, oko kukuthi i-3.3V i-standard CAN interface yokulawula okanye i-5V i-interface yomlawuli we-CAN.
Iimpawu zokudluliselwa
Iimpawu zothumelo lwe-CAN transceiver zisekelwe kwiiparamitha ezintathu: ukuhambisa ukulibaziseka, ukufumana ukulibaziseka, kunye nokulibaziseka komjikelo.
Xa sikhetha i-CAN transceiver sicinga ukuba encinci iparamitha yokulibaziseka ingcono, kodwa zeziphi izibonelelo eziziswa kukulibaziseka okuncinci kwaye zeziphi izinto ezinciphisa ukulibaziseka kothumelo kwinethiwekhi ye-CAN?
Kwi-CAN protocol, i-node yokuthumela ithumela idatha nge-TXD ngelixa i-RDX ibeka iliso kwimo yebhasi.Ukuba i-RDX monitor bit ayihambelani ne-transmit bit, i-node ibona impazamo encinci.Ukuba oko kubekwe iliso kwintsimi yolamlo ayihambelani nokuhanjiswa kwangempela, i-node iyayeka ukuhambisa, oko kukuthi, kukho iindawo ezininzi kwibhasi yokuthumela idatha ngexesha elifanayo kwaye i-node ayinikwanga phambili ukuhanjiswa kwedatha.
Ngokufanayo, kuzo zombini ukukhangela idatha kunye neebhithi zokuphendula ze-ACK, i-RDX iyadingeka ukuba ifumane isimo sedatha yebhasi ngexesha langempela.Ngokomzekelo, kunxibelelwano oluqhelekileyo lwenethiwekhi, ngaphandle kokungahambi kakuhle kwe-node, ukuze ufumane ngokuthembekileyo impendulo ye-ACK, kuyimfuneko ukuqinisekisa ukuba i-ACK bit idluliselwa kwirejista ye-RDX yomlawuli ngexesha elithile, ngaphandle koko, i-node yokuthumela Khangela imposiso yempendulo.Misela indawo yesampula kwi-70% kwi-1Mbps.Emva koko umlawuli uya kusampula i-ACK bit kwi-70% yexesha lexesha ukusuka ekuqaleni kwexesha le-ACK, oko kukuthi, ukulibaziseka komjikelezo wenethiwekhi yonke ye-CAN kufuneka ibe ngaphantsi kwe-700ns, ukususela kwixesha i-TXD ithumela, kude kube yi-ACK. bit yamkelwa kwi RDX.
Kuthungelwano olulodwa lwe-CAN, le parameter imiselwa ikakhulu kukulibaziseka kwe-isolator, ukulibaziseka komqhubi we-CAN, kunye nobude bentambo.Ixesha lokulibaziseka elincinane, ngoko ke, linceda ukusampula i-ACK bits ngokuthembekileyo kunye nokwandisa ubude bebhasi.Umzobo we-2 ubonisa impendulo ye-ACK yeenodi ezimbini ezinxibelelana zisebenzisa i-transceiver ye-CTM1051KAT.Ixesha eliqhelekileyo lokulibaziseka kwi-transceiver limalunga ne-120ns.
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