Iyini i-SPI Interface? Isebenza kanjani i-SPI?

Iyini i-SPI Interface? Isebenza kanjani i-SPI?

I-SPI imele isixhumi esibonakalayo se-Serial Peripheral futhi, njengoba igama liphakamisa, i-serial peripheral interface. I-Motorola yaqala ukuchazwa kumaphrosesa ayo we-MC68HCXX-series.I-SPI iyibhasi lokuxhumana elinesivinini esikhulu, eline-duplex egcwele, ehambisanayo, futhi ithatha imigqa emine kuphela kuphinikhodi, ilondoloza iphinikhodi ye-chip, kuyilapho ilondoloza isikhala sesakhiwo se-PCB, inikeza lula, esetshenziswa ikakhulukazi ku-EEPROM, FLASH, iwashi lesikhathi sangempela, isiguquli se-AD, naphakathi kwephrosesa yesiginali yedijithali nedekhoda yesignali yedijithali.

I-SPI inezinhlobo ezimbili eziyinhloko nezigqila. Uhlelo lokuxhumana lwe-SPI ludinga ukufaka idivayisi eyodwa (futhi eyodwa kuphela) eyinhloko kanye nesigqila esisodwa noma ngaphezulu. Idivayisi eyinhloko (i-Master) inikeza iwashi, idivayisi yesigqila (Isigqila), kanye ne-SPI interface, konke okuqalwa idivayisi eyinhloko. Uma amadivaysi egqila amaningi ekhona, aphathwa amasignali e-chip afanele.I-SPI iyi-duplex egcwele, futhi i-SPI ayichazi umkhawulo wesivinini, futhi ukusetshenziswa okujwayelekile ngokuvamile kungafinyelela noma kudlule i-10 Mbps.

Isixhumi esibonakalayo se-SPI ngokuvamile sisebenzisa imigqa yesignali emine ukuze kuxhunywe:

I-SDI (Ukufakwa Kwedatha), SDO (Okukhipha idatha), SCK (Iwashi), CS (Khetha)

I-MISO:Iphinikhodi yokufaka yedivayisi eyinhloko kusukela kudivayisi. Iphinikhodi ithumela idatha kumodi futhi ithola idatha kwimodi eyinhloko.

MOSI:Okukhiphayo Kwedivayisi Eyinhloko/iphinikhodi yokufaka kusuka kudivayisi. Iphinikhodi ithumela idatha kumodi eyinhloko futhi ithola idatha kumodi.

I-SCLK:Isiginali yewashi le-serial, ekhiqizwe umshini oyinhloko.

I-CS / SS:Khetha isignali kumishini, elawulwa yimishini eyinhloko. Isebenza njengokuthi "iphinikhodi yokukhetha i-chip", ekhetha idivayisi yesigqila eshiwo, evumela idivayisi eyinhloko ukuthi ixhumane nedivayisi ethile yesigqila iyodwa futhi igweme izingxabano kulayini wedatha.

Eminyakeni yamuva nje, inhlanganisela yobuchwepheshe be-SPI (Serial Peripheral Interface) kanye nezibonisi ze-OLED (Organic Light-Emitting Diode) isiphenduke indawo okugxilwe kuyo embonini yezobuchwepheshe. I-SPI, eyaziwa ngokusebenza kahle kwayo okuphezulu, ukusetshenziswa kwamandla okuphansi, kanye nomklamo olula wehadiwe, inikeza ukudluliswa kwesignali okuzinzile kwezibonisi ze-OLED. Ngaleso sikhathi, izikrini ze-OLED, ezinezici zazo ezizikhiphayo, izilinganiso eziphakeme zokuqhathanisa, ama-engeli abanzi wokubuka, nemiklamo emincane kakhulu, ziya ngokuya zithatha indawo yezikrini ze-LCD zendabuko, zibe yisixazululo esithandwayo sokubonisa ama-smartphone, izinto ezigqokwayo, namadivayisi e-IoT.