Ibishya kandi byumwimerere muri TCAN1042VDRQ1 Ibikoresho bya elegitoronike Byinjijwemo Uruziga Ibishushanyo Inkomoko 1- 7 Gukora Umwe Guhagarika Urutonde rwa BOM

Kubantu ba CAN bitandukanya, ibyinjijwe bivuga cyane cyane ibyinjira byinjira kuruhande rwa CAN mugenzuzi wihuza, bigizwe nimbaraga zinjiza nibimenyetso byinjira.

Ukurikije imiyoboro ya CAN ya voltage ya mugenzuzi 3.3V cyangwa 5V ikoreshwa na CAN module irashobora gutoranywa.Urutonde rusanzwe rwinjiza rwa moderi ya CAN yihariye ni VCC ± 5%, cyane cyane urebye ko urwego rwa bisi rushobora kubikwa murwego rusanzwe rwagaciro kandi bigatuma chip ya kabiri ya CAN ikora hafi yumuriro wa voltage.

Kubice bitandukanye bya CAN transceiver chip, VIO pin ya chip igomba guhuzwa na voltage imwe nki urwego rwa signal ya TXD kugirango ihuze urwego rwibimenyetso, cyangwa niba nta pin ya VIO ihari, urwego rwibimenyetso rugomba kubikwa neza na VCC .Mugihe ukoresheje CTM ikurikirana ya transcevers yihariye birakenewe guhuza urwego rwibimenyetso bya TXD hamwe na voltage yo gutanga, ni ukuvuga 3.3V isanzwe ya CAN igenzura cyangwa 5V isanzwe ya CAN igenzura.

Ibiranga ihererekanyabubasha

Ikwirakwizwa ryiranga CAN transceiver rishingiye kubintu bitatu: kohereza gutinda, kwakira gutinda, no gutinda kwinzira.

Mugihe uhisemo transceiver ya CAN twibwira ko ntoya ibipimo byo gutinda ari byiza, ariko ni izihe nyungu gutinda kwihererekanya kuzana bizana kandi ni ibihe bintu bigabanya gutinda kwihererekanyabubasha?

Muri protocole ya CAN, kohereza node yohereza amakuru binyuze muri TXD mugihe RDX ikurikirana leta ya bisi.Niba monitor ya RDX bitajyanye no kohereza biti, node ibona amakosa make.Niba ibyakurikiranwe murwego rwubukemurampaka bidahuye nogukwirakwiza kwukuri, node ihagarika kohereza, ni ukuvuga ko hari imitwe myinshi kuri bisi yohereza amakuru icyarimwe kandi node ntabwo ihabwa umwanya wambere wo kohereza amakuru.

Muri ubwo buryo ,, muburyo bwombi bwo kugenzura amakuru no gusubiza ACK, RDX irasabwa kubona amakuru ya bisi mugihe nyacyo.Kurugero, mubitumanaho bisanzwe byurusobe, ukuyemo node idasanzwe, kugirango wakire neza igisubizo cya ACK, birakenewe ko ACK biti yimurirwa mubitabo bya RDX byumuyobozi mugihe runaka, bitabaye ibyo, kohereza node bizabikora menya ikosa ryo gusubiza.Shiraho icyitegererezo kuri 70% kuri 1Mbps.Noneho umugenzuzi azagereranya ACK biti kuri 70% yigihe cyigihe uhereye igihe ACK yatangiriye, ni ukuvuga gutinda kwinzira kumurongo wa CAN yose igomba kuba munsi ya 700ns, uhereye igihe TXD yohereje, kugeza ACK bit yakiriwe kuri RDX.

Mu rusobe rwa CAN rwitaruye, iyi parameter igenwa cyane cyane nubukererwe bwa wenyine, umushoferi wa CAN yatinze, nuburebure bwa kabili.Igihe gito cyo gutinda rero, gifasha kwigana bits ya ACK kwizerwa no kongera uburebure bwa bisi.Igishushanyo cya 2 cyerekana igisubizo cya ACK cyimyanya ibiri ivugana ukoresheje transmiteri ya CTM1051KAT.Igihe gisanzwe cyo gutinda kiranga transceiver ni 120ns.