Merrillchip Sabo & Na asali a cikin kayan kayan lantarki hadedde da'ira IC DS90UB928QSQX/NOPB

1.

FPDLINK babbar bas ce ta bambance-bambancen watsawa mai sauri wanda TI ta ƙera, galibi ana amfani dashi don watsa bayanan hoto, kamar kyamara da bayanan nuni.Ma'auni yana ci gaba koyaushe, daga ainihin layin guda biyu suna watsa hotuna 720P@60fps zuwa ikon watsa 1080P@60fps na yanzu, tare da kwakwalwan kwamfuta masu zuwa suna goyan bayan ƙudurin hoto mafi girma.Nisan watsawa kuma yana da tsayi sosai, ya kai kusan 20m, yana mai da shi manufa don aikace-aikacen mota.

FPDLINK yana da tashar gaba mai sauri don watsa bayanan hoto mai sauri da ƙaramin yanki na bayanan sarrafawa.Hakanan akwai tashar baya mai ƙarancin sauri don watsa bayanan sarrafa baya.Hanyoyin sadarwa na gaba da baya suna samar da tashar sarrafawa guda biyu, wanda ke haifar da zane mai wayo na I2C a cikin FPDLINK wanda za'a tattauna a wannan takarda.

Ana amfani da FPDLINK tare da serializer da deserializer hade tare, za a iya haɗa CPU zuwa ko dai serializer ko deserializer, dangane da aikace-aikacen.Misali, a aikace-aikacen kyamara, firikwensin kamara yana haɗawa da serializer kuma yana aika bayanai zuwa deserializer, yayin da CPU ke karɓar bayanan da aka aiko daga na'urar.A cikin aikace-aikacen nuni, CPU yana aika bayanai zuwa serializer kuma mai cirewa yana karɓar bayanan daga serializer kuma ya aika zuwa allon LCD don nunawa.

2.

Ana iya haɗa i2c na CPU zuwa serializer ko i2c na deserializer.Guntuwar FPDLINK tana karɓar bayanin I2C da CPU ta aiko kuma yana watsa bayanan I2C zuwa ɗayan ƙarshen ta FPDLINK.Kamar yadda muka sani, a cikin ka'idar i2c, ana daidaita SDA ta hanyar SCL.A cikin aikace-aikacen gabaɗaya, ana kulle bayanai a gefen haɓakar SCL, wanda ke buƙatar maigida ko bawa ya kasance a shirye don bayanai akan faɗuwar SCL.Sai dai kuma a FPDLINK, tunda FPDLINK ya yi lokacin watsawa, to babu matsala idan maigida ya aiko da bayanai, mafi yawa bawan yana karbar bayanan bayan sa’o’i kadan da maigidan ya aiko, amma akwai matsala idan bawa ya amsa wa maigidan. , misali, idan bawa ya amsa wa maigida da ACK lokacin da aka aika da ACK zuwa ga maigidan, ya riga ya wuce lokacin da bawa ya aiko, watau ya riga ya wuce ta FPDLINK kuma yana iya rasa tashi. Farashin SCL.

Abin farin ciki, ka'idar i2c tana la'akari da wannan yanayin.i2c spec ya ayyana wata kadara mai suna i2c stretch, wanda ke nufin cewa bawa na i2c zai iya ja da SCL kasa kafin ya aiko da ACK idan bai shirya ba don maigidan ya kasa yayin kokarin cire SCL sama don maigida ya ci gaba da kokarinsa. Cire SCL sama da jira, Don haka lokacin da aka bincika i2c waveform a gefen FPDLINK Slave, za mu ga cewa duk lokacin da aka aika sashin adireshin bawa, akwai bits 8 kawai, kuma za a amsa ACK daga baya.

Guntuwar FPDLINK ta TI tana ɗaukar cikakkiyar fa'idar wannan fasalin, maimakon kawai tura i2c waveform ɗin da aka karɓa (watau kiyaye ƙimar baud iri ɗaya da mai aikawa), yana sake watsa bayanan da aka karɓa a ƙimar baud da aka saita akan guntun FPDLINK.Don haka wannan yana da mahimmanci a lura lokacin da ake nazarin tsarin ƙawancen i2c a gefen FPDLINK Slave.Adadin baud na CPU i2c na iya zama 400K, amma ƙimar i2c baud a gefen bawa FPDLINK shine 100K ko 1M, dangane da manyan saitunan SCL a cikin guntu FPDLINK.