Merrillchip Chatsopano & Choyambirira m'gulu Zamagetsi zamagetsi zophatikizika IC DS90UB928QSQX/NOPB

1.

FPDLINK ndi basi yothamanga yosiyana kwambiri yopangidwa ndi TI, yomwe imagwiritsidwa ntchito makamaka kutumiza zithunzi, monga kamera ndi data yowonetsera.Muyezowu ukusintha mosalekeza, kuchokera pamizere yoyambirira yomwe imatumiza zithunzi za 720P@60fps kupita ku kuthekera komwe kulipo potumiza 1080P@60fps, ndi tchipisi totsatira tothandizira zithunzi zapamwamba kwambiri.Mtunda wotumizira nawonso ndi wautali kwambiri, umafika pafupifupi 20m, ndikupangitsa kuti ikhale yabwino pamagalimoto.

FPDLINK ili ndi njira yopita patsogolo yothamanga kwambiri yotumizira deta yothamanga kwambiri komanso gawo laling'ono lazowongolera.Palinso njira yobwerera kumbuyo yotsika pang'ono yotumizira uthenga wowongolera m'mbuyo.Kuyankhulana kutsogolo ndi kumbuyo kumapanga njira yoyendetsera maulendo awiri, yomwe imatsogolera ku mapangidwe anzeru a I2C mu FPDLINK zomwe zidzakambidwe mu pepala ili.

FPDLINK imagwiritsidwa ntchito ndi serializer ndi deserializer yophatikizidwa palimodzi, CPU imatha kulumikizidwa ndi serializer kapena deserializer, kutengera kugwiritsa ntchito.Mwachitsanzo, mu pulogalamu ya kamera, sensa ya kamera imagwirizanitsa ndi serializer ndikutumiza deta kwa deserializer, pamene CPU imalandira deta yotumizidwa kuchokera ku deserializer.Mu pulogalamu yowonetsera, CPU imatumiza deta ku serializer ndipo deserializer imalandira deta kuchokera ku serializer ndikuitumiza ku LCD skrini kuti iwonetsedwe.

2.

I2c ya CPU imatha kulumikizidwa ndi serializer kapena deserializer's i2c.Chip cha FPDLINK chimalandira chidziwitso cha I2C chotumizidwa ndi CPU ndikutumiza uthenga wa I2C kumapeto kwina kudzera pa FPDLINK.Monga tikudziwira, mu protocol ya i2c, SDA imalumikizidwa kudzera pa SCL.Nthawi zambiri, deta imayikidwa pamphepete mwa SCL, zomwe zimafuna kuti mbuye kapena kapolo akhale wokonzekera deta pamphepete mwa SCL.Komabe, mu FPDLINK, popeza kutumiza kwa FPDLINK kwanthawi yake, palibe vuto pamene mbuye atumiza deta, nthawi zambiri kapoloyo amalandira deta mawotchi angapo pambuyo pake kuposa momwe mbuyeyo amatumizira, koma pali vuto pamene kapolo akuyankha mbuyeyo. , mwachitsanzo, kapolo akamayankha mbuye wake ndi ACK pamene ACK imaperekedwa kwa mbuye wake, ili kale mochedwa kuposa nthawi yotumizidwa ndi kapoloyo, mwachitsanzo, wadutsa kale kuchedwa kwa FPDLINK ndipo mwina waphonya kukwera. Mtengo wapatali wa magawo SCL.

Mwamwayi, protocol ya i2c imaganizira izi.i2c imatchula katundu wotchedwa i2c kutambasula, zomwe zikutanthauza kuti kapolo wa i2c akhoza kukokera SCL pansi asanatumize ACK ngati siili yokonzeka kuti mbuyeyo alephere poyesa kukoka SCL kuti mbuye apitirize kuyesera. Kokani SCL mmwamba ndikudikirira, Chifukwa chake posanthula mawonekedwe a i2c pa FPDLINK Slave side, tipeza kuti nthawi iliyonse gawo la adilesi ya kapolo limatumizidwa, pali ma bits 8 okha, ndipo ACK idzayankhidwa pambuyo pake.

Chip cha TI's FPDLINK chimagwiritsa ntchito bwino mbaliyi, m'malo mongotumiza mawonekedwe a i2c omwe adalandira (ie kusunga kuchuluka kwa baud monga wotumiza), imatumizanso deta yomwe idalandilidwa pamlingo wa baud wokhazikitsidwa pa chip FPDLINK.Izi ndizofunikira kuzindikira posanthula mawonekedwe a i2c pa FPDLINK Slave side.Kuchuluka kwa CPU i2c baud kungakhale 400K, koma mlingo wa i2c wa baud kumbali ya akapolo ya FPDLINK ndi 100K kapena 1M, kutengera SCL yapamwamba ndi yotsika mu chip FPDLINK.