ADI ADIN2111 Ethernetcanzazai zama babban abin gabatarwa na abun ciki mai zuwa. Ta wannan labarin, editan yana fatan kowa ya sami ɗan sani da fahimtar yanayin da ke da alaƙa da bayanansa. Cikakken bayani shine kamar haka.
ADIN2111 yana da ƙarancin ƙarfi, ƙarancin rikitarwa, tashar Ethernet guda biyucanzawanda ya haɗa tashar 10BASE-T1L PHY da Serial Peripheral Interface (SPI) tashar jiragen ruwa. Na'urar tana amfani da ƙaramar ƙarancin ƙarfin kundi don aikace-aikacen Ethernet na Masana'antu kuma yana dacewa da ma'aunin IEEE® 802.3cg-2019™ Ethernet don dogon nisa 10 Mbps Single Pair Ethernet (SPE). Thecanza(yanke-ta ko kantin-da-gaba) yana goyan bayan daidaitawar igiyoyi masu yawa tsakanin tashoshin Ethernet guda biyu da tashar tashar tashar jiragen ruwa ta SPI, tana ba da mafita mai sauƙi don layi, sarkar daisy ko topologies cibiyar sadarwa ta zobe.
ADIN2111 yana tallafawa har zuwa mita 1700 na isar da kebul tare da ƙarancin ƙarancin wutar lantarki na 77mW. Cores ɗin PHY guda biyu suna goyan bayan aikin 1.0 V pp da 2.4 V pp kamar yadda aka ayyana a cikin ma'auni na IEEE 802.3cg kuma ana iya ƙarfafa su daga layin dogo na 1.8 V ko 3.3 V guda ɗaya. Ana samun ADIN2111 a cikin tsarin da ba a sarrafa ba inda na'urar ke tura zirga-zirga ta atomatik tsakanin tashoshin Ethernet guda biyu.
Na'urar ta haɗa acanza, guda biyu Ethernet jiki Layer (PHY) cores tare da kafofin watsa labarai damar iko (MAC) musaya, da kuma duk hade analog circuitry, shigar da kuma fitarwa agogon na'urorin buffering. Na'urar kuma ta haɗa da layukan buffer na ciki, SPI da rajistar tsarin tsarin ƙasa, da dabarun sarrafawa don sarrafa sake saiti da sarrafa agogo da daidaita fil ɗin hardware.
ADIN2111 yana haɗa nau'ikan sa ido kan samar da wutar lantarki da kewaye-kan-sake saitin (POR) don ingantacciyar ƙarfin tsarin tsarin. SPI mai waya 4 da aka yi amfani da ita don sadarwa tare da mai watsa shiri ana iya saita shi azaman OPEN Alliance SPI ko Generic SPI. Duk hanyoyin biyu suna goyan bayan kariyar bayanai na zaɓi ko Duban Redundancy Cyclic (CRC).
Kowane PHY na ADIN2111 kuma ana iya daidaita shi don samar da katsewar hardware bayan sake saitin kayan masarufi (RESET fil ya ja ƙasa) ta hanyar saita CRSM_HRD_RST_IRQ_EN bit a cikin Rijistar Mask ɗin Tsagewar Tsarin PHY daidai (CRSM_IRQ_MASK). Kodayake ana iya amfani da PHY guda biyu don samar da katsewar kayan aiki, ana ba da shawarar PHY 1 don wannan dalili. Bayan maigidan SPI ya sami katsewar hardware daga fil ɗin INT, PHYIN (bi da bi, P2_PHYINT bit) akan rijistar matsayi 0 (bi da bi, rijista matsayi 1) kuma an saita shi zuwa 1, yana sanar da katsewar daga PHY 1 (bi da bi, PHY). 2) . Daga nan za a iya bincika tushen katsewar ta amfani da CRSM_HRD_RST_IRQ_LH bit a cikin Madaidaicin Matsayin Tsagewar Tsarin PHY (CRSM_IRQ_STATUS).
Don tabbatar da tsarin ta amfani da mai sarrafa maƙiyi na waje, kowane PHY na ADIN2111 ana iya buƙatarsa don samar da katsewar hardware akan fil ɗin INT ta amfani da CRSM_SW_IRQ_REQ bit a cikin Rijistar Mask ɗin Tsagewar Tsarin (CRSM_IRQ_MASK). Kodayake ana iya amfani da PHY guda biyu don samar da katsewar kayan aiki, ana ba da shawarar PHY 1 don wannan dalili. Bayan maigidan SPI ya karɓi katsewar hardware daga fil ɗin INT, PHYIN bit (bi da bi, P2_PHYINT bit) a cikin rajistar matsayi 0 (bi da bi, rijista matsayi 1) kuma an saita shi zuwa 1, yana sanar da katsewar daga PHY 1 (bi da bi, PHY). 2) . Ana iya bincika tushen katsewar ta amfani da CRSM_SW_IRQ_LH bit a cikin Madaidaicin Matsayin Tsagewar Tsarin PHY (CRSM_IRQ_STATUS).
Kowane ADIN2111 PHY kuma yana iya haifar da katsewar kuskuren tsarin. Tutocin katsewa suna cikin sashin da aka tanada na ragi na madaidaicin Rijista Katse Matsayin Tsarin PHY (CRSM_IRQ_STATUS). Dole ne a saita rajistar abin rufe fuska na tsarin (CRSM_IRQ_MASK) akan PHY mai dacewa don kunna kuskuren tsarin. Dubi Table 212 don cikakkun bayanai kan katse abin rufe fuska. ADIN2111 dole ne a yi sake saitin hardware don murmurewa daga katsewar kuskuren tsarin daga ɗayan PHYs guda biyu ( CRSM_IRQ_STATUS da aka tanada yana karanta 1 akan PHY daban-daban).
ADIN2111 ya haɗa da tsarin kula da wutar lantarki don tabbatar da cewa guntu yana da wutar lantarki mai dacewa kafin fara tsarin wutar lantarki. A lokacin ƙarfin wutar lantarki, ADIN2111 ya kasance a cikin yanayin sake saiti na kayan aiki har sai kowane kayan aiki ya wuce mafi ƙarancin tashin ƙofa kuma ana ɗaukar wadatar da kyau.
Ana ƙaddamar da sake saitin kayan masarufi ta da'irar sake saitin wutar lantarki ko ta hanyar tuƙi ƙasan RESET fil na aƙalla 10 µs. ADIN2111 ya haɗa da da'irar deglitch akan wannan fil don ƙin bugun jini da ya fi guntu 1 µs. Lokacin da aka ɓata fil ɗin RESET, duk fitilun shigarwa/fitarwa (I/O) suna kasancewa a cikin yanayin yanayi uku, ana lanƙwan fitilun na'ura na kayan aiki, kuma ana saita fil ɗin I/O zuwa yanayin aikinsu. Ana kunna da'irar oscillator crystal lokacin da duk kayan wutar lantarki na waje da na ciki suna da inganci kuma suna da ƙarfi. Bayan kristal ya fara kuma ya daidaita, ana kunna madauki mai kulle-kulle (PLL). Bayan jinkiri na 90 ms (max) bayan RESET fil ɗin ya zama kayan zaki, ana tabbatar da duk agogon ciki, ana fitar da dabaru na ciki daga sake saiti, kuma duk rajistar SPI na ciki, PHY 1 da PHY 2 suna samun dama daga SPI. Fitowar agogon CLK25_REF tana ƙasa da ƙasa lokacin da aka ɗauki fil ɗin RESET ƙasa da ƙasa kuma ya kasance ƙasa da ƙasa don 70 ms (max) bayan an ɗauki ƙarancin RESET.
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