Tlhaloso: ADI ADIN2111 Ethernetswitjhae tla ba selelekela sa sehlooho sa dikahare tse latelang. Ka sengoloa sena, mohlophisi o tšepa hore motho e mong le e mong a ka ba le tsebo le kutloisiso ea boemo ba eona le tlhaiso-leseling. Lintlha ke tse latelang.
ADIN2111 ke matla a tlase, ho rarahana ho tlase, boema-kepe ba Ethernet ba babeliswitjhae kopanyang 10BASE-T1L PHY le Serial Peripheral Interface (SPI). Sesebelisoa se sebelisa node e thibelang matla a tlase bakeng sa lits'ebetso tsa Industrial Ethernet mme e lumellana le IEEE® 802.3cg-2019™ Ethernet standard bakeng sa sebaka se selelele sa 10 Mbps Single Pair Ethernet (SPE). Theswitjha(ho khaola kapa ho boloka-ho ea pele) e tšehetsa mekhoa e mengata ea li-cabling pakeng tsa li-ports tse peli tsa Ethernet le SPI host port, e fanang ka tharollo e feto-fetohang bakeng sa line, daisy-chain kapa ring network topology.
ADIN2111 e ts'ehetsa ho fihla ho limithara tse 1700 tsa cable ka tšebeliso ea matla e tlase haholo ea 77 mW. Li-cores tse peli tsa PHY li ts'ehetsa ts'ebetso ea 1.0 V pp le 2.4 V pp joalo ka ha ho hlalositsoe maemong a IEEE 802.3cg 'me e ka tsamaisoa ho tsoa seporong se le seng sa 1.8 V kapa 3.3 V. ADIN2111 e fumaneha ka mokhoa o sa laoleheng moo sesebelisoa se fetisetsang sephethephethe pakeng tsa likou tse peli tsa Ethernet.
Sesebelisoa se kopanya aswitjha, li-cores tse peli tsa Ethernet physical layer (PHY) tse nang le li-interface tsa taolo ea phihlello ea mecha ea litaba (MAC), le lisebelisoa tsohle tse amanang le li-analog, li-input and output buffering clock. Sesebelisoa se boetse se kenyelletsa mela ea ka hare ea li-buffer, SPI le li-subsystem registering, le logic ea taolo ea ho laola reset le taolo ea oache le tlhophiso ea phini ea hardware.
ADIN2111 e kopanya potoloho ea ho lekola phepelo ea motlakase le potoloho ea matla a ho seta bocha (POR) bakeng sa ho matlafatsa boemo ba sistimi. SPI ea terata e 4 e sebelisoang ho buisana le moamoheli e ka hlophisoa e le OPEN Alliance SPI kapa Generic SPI. Mefuta ena ka bobeli e ts'ehetsa ts'ireletso ea data ea boikhethelo kapa Cyclic Redundancy Check (CRC).
PHY e 'ngoe le e 'ngoe ea ADIN2111 e ka boela ea hlophisoa ho hlahisa tšitiso ea hardware ka mor'a ho tsosolosa hardware (RESET pin e huloa tlaase) ka ho beha CRSM_HRD_RST_IRQ_EN bit ho PHY's System Interrupt Mask Register (CRSM_IRQ_MASK). Leha li-PHY ka bobeli li ka sebelisoa ho hlahisa litšitiso tsa hardware, PHY 1 e khothaletsoa molemong ona. Ka mor'a hore mong'a SPI a fumane tšitiso ea hardware ho tloha pineng ea INT, PHYINT bit (ka ho latellana, P2_PHYINT bit) ho ngoliso ea maemo 0 (ka ho latellana, ngoliso ea maemo 1) e boetse e behiloe ho 1, ho tsebisa tšitiso e tsoang ho PHY 1 (ka ho latellana, PHY). 2) . Mohloli oa tšitiso o ka hlahlojoa ho sebelisoa bitana ea CRSM_HRD_RST_IRQ_LH ho Ngoliso ea Boemo ba Ts'itiso ea Tsamaiso ea PHY (CRSM_IRQ_STATUS).
Bakeng sa netefatso ea sistimi ho sebelisoa selaolo sa moamoheli sa kantle, PHY ka 'ngoe ea ADIN2111 e ka kopuoa ho hlahisa tšitiso ea lisebelisoa ho INT pin ho sebelisa CRSM_SW_IRQ_REQ bit ho System Interrupt Mask Register (CRSM_IRQ_MASK). Leha li-PHY ka bobeli li ka sebelisoa ho hlahisa litšitiso tsa hardware, PHY 1 e khothaletsoa molemong ona. Ka mor'a hore mong'a SPI a fumane tšitiso ea hardware ho tloha pineng ea INT, PHYINT bit (ka ho latellana, P2_PHYINT bit) ho ngoliso ea maemo 0 (ka ho latellana, ngoliso ea maemo 1) e boetse e behiloe ho 1, ho tsebisa tšitiso e tsoang ho PHY 1 (ka ho latellana, PHY). 2) . Mohloli oa tšitiso o ka hlahlojoa ho sebelisoa bitana ea CRSM_SW_IRQ_LH ho Ngoliso ea Boemo ba Ts'itiso ea Tsamaiso ea PHY (CRSM_IRQ_STATUS).
E 'ngoe le e' ngoe ea ADIN2111 PHY e ka boela ea hlahisa bothata ba tsamaiso. Lifolakha tse sitisang li fumaneha karolong e behelletsoeng ea PHY's System Interrupt Status Register (CRSM_IRQ_STATUS) e tsamaellanang. Sistimi e thibelang maske registering (CRSM_IRQ_MASK) e tlameha ho hlophisoa ho PHY e tsamaellanang ho lumella ho sitisoa ha liphoso tsa sistimi. Sheba Lethathamo la 212 bakeng sa lintlha tse mabapi le ho sitisa masking. ADIN2111 e tlameha ho etsoa ho seta botjha ha hardware hore e hlaphoheloe phosong ya sisteme ho tswa ho e nngwe ya diPHY tse pedi (CRSM_IRQ_STATUS reserved bit e bala 1 ho PHY e fapaneng).
ADIN2111 e kenyelletsa potoloho ea phepelo ea motlakase ho netefatsa hore chip e na le phepelo e nepahetseng ea motlakase pele e qala tatellano ea ho phahamisa matla. Nakong ea motlakase, ADIN2111 e lula e le boemong ba ho tsosolosa hardware ho fihlela phepelo e 'ngoe le e' ngoe e feta tekanyo ea eona e ntseng e phahama 'me phepelo e nkoa e le ntle.
Reset ea hardware e qalisoa ke motlakase oa ho seta botjha kapa ka ho theola phini ea RESET tlase bakeng sa bonyane 10 µs. ADIN2111 e kenyelletsa potoloho ea deglitch pineng ena ho hana maqhubu a makhutšoane ho feta 1 µs. Ha pinana ea RESET e hlakotsoe, lithakhisa tsohle tsa input / output (I / O) li lula li le maemong a mararo, lisebelisoa tsa tlhophiso ea hardware li kenngoa, 'me li-pin tsa I / O li lokiselitsoe mokhoa oa tsona oa ho sebetsa. Potoloho ea kristale oscillator e lumelloa ha matla ohle a kantle le a kahare a matla a sebetsa ebile a tsitsitse. Ka mor'a hore kristale e qale 'me e tsitse, loop e notletsoeng ke phase (PLL) e ea sebetsa. Ka mor'a ho lieha ha 90 ms (max) ka mor'a hore pinana ea RESET e hlajoe, lioache tsohle tsa ka hare li tiisitsoe, logic ea ka hare e lokolloa ho tloha ho reset, 'me li-register tsohle tsa ka hare tsa SPI, PHY 1 le PHY 2 li fumaneha ho tsoa ho SPI. Phallo ea oache ea CLK25_REF e ts'oaroa ka tlase ha pinana ea RESET e nkoa e le tlase 'me e lula e le tlaase bakeng sa 70 ms (max) ka mor'a hore pinana ea RESET e nkeloe tlaase.
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