Merrillchip Ibishya & Umwimerere mububiko Ibikoresho bya elegitoronike byahujwe n'umuzunguruko IC DS90UB928QSQX / NOPB

1.

FPDLINK ni bisi yihuta itandukanya bisi yoherejwe na TI, ikoreshwa cyane cyane mu kohereza amakuru yishusho, nka kamera no kwerekana amakuru.Igipimo gihora gihindagurika, uhereye kumurongo wambere wumurongo wohereza amashusho 720P @ 60fps kugeza kubushobozi bwubu bwo kohereza 1080P @ 60fps, hamwe na chip ikurikiraho ishyigikira ndetse no gufata amashusho hejuru.Intera yoherejwe nayo ni ndende cyane, igera kuri 20m, bigatuma iba nziza kumodoka.

FPDLINK ifite umuyoboro wihuse wihuta wo kohereza amakuru yihuta yamakuru yamakuru nigice gito cyo kugenzura amakuru.Hariho kandi umuyoboro muto ugaruka inyuma wo kohereza amakuru yo kugenzura amakuru.Itumanaho ryimbere ninyuma rigizwe numuyoboro ugenzura ibyerekezo, biganisha ku gishushanyo mbonera cya I2C muri FPDLINK kizaganirwaho muriyi nyandiko.

FPDLINK ikoreshwa hamwe na serializer hamwe na deserializer ihujwe hamwe, CPU irashobora guhuzwa na serializer cyangwa deserializer, bitewe na progaramu.Kurugero, muri porogaramu ya kamera, sensor ya kamera ihuza serializer kandi ikohereza amakuru kuri deserializer, mugihe CPU yakira amakuru yoherejwe na deserializer.Mugaragaza porogaramu, CPU yohereza amakuru kuri serializer hanyuma deserializer yakira amakuru avuye muri serializer ikohereza kuri ecran ya LCD kugirango yerekanwe.

2.

I2c ya CPU irashobora noneho guhuzwa na serializer cyangwa i2c ya deserializer.Chip ya FPDLINK yakira amakuru ya I2C yoherejwe na CPU kandi yohereza amakuru ya I2C kurundi ruhande binyuze kuri FPDLINK.Nkuko tubizi, muri protocole ya i2c, SDA ihuzwa binyuze muri SCL.Mubisanzwe muri rusange, amakuru yometse kumurongo uzamuka wa SCL, bisaba shobuja cyangwa imbata kuba yiteguye amakuru kumpanuka ya SCL.Ariko, muri FPDLINK, kubera ko kwanduza FPDLINK kugihe, ntakibazo mugihe shebuja yohereje amakuru, hafi ya yose umugaragu yakira amakuru kumasaha make nyuma ya shebuja yohereje, ariko harikibazo mugihe umugaragu asubije shebuja. , kurugero, mugihe umugaragu asubije shebuja hamwe na ACK mugihe ACK yandikiwe shobuja, birarenze nyuma yigihe cyoherejwe numucakara, ni ukuvuga ko byanyuze mubukererwe bwa FPDLINK kandi bishobora kuba byarabuze kuzamuka. inkombe ya SCL.

Kubwamahirwe, protocole ya i2c ifata iki kibazo.i2c yerekana umutungo witwa i2c kurambura, bivuze ko umugaragu wa i2c ashobora gukuramo SCL hasi mbere yo kohereza ACK niba ititeguye kugirango shebuja azananirwa mugihe agerageza gukurura SCL hejuru kugirango shebuja azakomeza kugerageza gukurura SCL hejuru hanyuma utegereze i, Kubwibyo rero mugihe dusesenguye imiterere ya i2c kuruhande rwumucakara wa FPDLINK, tuzasanga burigihe burigihe igice cyabacakara cyoherejwe, hari bits 8 gusa, kandi ACK izasubizwa nyuma.

Chip ya FPDLINK ya TI ikoresha neza iyi miterere, aho kohereza gusa i2c yakiriwe neza (ni ukuvuga kugumana igipimo cya baud kimwe nuwohereje), isubiza amakuru yakiriwe ku gipimo cya baud cyashyizwe kuri chip ya FPDLINK.Ibi rero ni ngombwa kumenya mugihe usesenguye imiterere ya i2c kuruhande rwumucakara wa FPDLINK.Igipimo cya CPU i2c baud gishobora kuba 400K, ariko igipimo cya i2c baud kuruhande rwumucakara wa FPDLINK ni 100K cyangwa 1M, bitewe na SCL yo hejuru kandi ntoya muri chip ya FPDLINK.