Kugadzira PCB yeHDMI Switch yeKuchinja Mavhidhiyo Akawanda

PCB yeHDMI switch inobatanidza zvishandiso zvakasiyana-siyana zvekutanga kune imwe display output uku ichichengetedza nzira yevhidhiyo inomhanya zvakanyanya uye nzira dzekudzora sideband dzinoita kuti switching ive yakavimbika. Mumagadzirirwo emazuva ano, bhodhi rinogona kuda kubata TMDS uye/kana FRL signaling, EDID management, hot-plug detect, CEC, HDCP repeater behavior, audio extraction kana eARC-related functions zvichienderana neHDMI transceiver yakasarudzwa.

Highleap Electronics inogadzira uye inounganidza maPCBA eHDMI switch akagadzirwa nevatengi. Isu tinovaka kubva paHDMI switch/transceiver yakaburitswa, stack-up, connector map, firmware uye zvinodiwa zvekuyedza zvinotsanangurwa nevatengi; hatifungi kuti zvigadzirwa zvese zvinotengeswa neHDMI version imwe chete zvinoda bandwidth kana maficha akafanana.

1. Dhizaini yePCB yeKiyi yeHDMI Switch uye Zvikosheswa pakugadzira

Switch IC inogona kubatanidza mabasa ekuenzanisa, EDID memory uye repeater, asi PCB channel ichiri kusarudza kana electrical link ine margin yakakwana. Kugadzira kunofanirwa kuchengetedza nzira yekukurumidza kubva kune yega yega input connector kuenda kuswitch uye kubva kuswitch kuenda kune output.

• Tsananguro chaiyo yemodhi yekubatanidza: Taura chiyero chedata chinodiwa cheTMDS/FRL, huwandu hwemaports ari kushanda uye mamodhi evhidhiyo anotsigirwa pane kushandisa label yeshanduro chete. Bhodhi rinogona kuongororwa uchishandisa zvirambidzo zvinoshanda mu PCB yeHDMI interface kugadzira.
• Kudzorwa impedance: Mapaya ekumhanya kwepamusoro anofanirwa kuvakwa zvichienderana ne "stack-up" yakaburitswa uye "target differential impedance". Kuchinja kwekugadzira hakufanirwe kuita kuti fungidziro dzakashandiswa dzisashande. zvinodiwa zve impedance zvinodzorwa.
• Kutanga kweConnector uye kuburikidza nekuchinja: Kupatsanurana kwemapair, mareferensi, ma anti-pads uye nzvimbo yekudzoka inofanira kunge yakafanana pane zvese zvinopinda kuitira kuti pasave nemugero une kurasikirwa kwakanyanya kana kusagadzikana.
• Signal conditioning: Zvigadzirwa zvine data rakawanda zvinogona kushandisa ma equalizer akabatanidzwa kana ekunze, ma redriver kana ma retimers kuti adzore margin. Nzira yacho inofanira kuramba ichitevera high-speed PCB kushandisa nzira yekufambisa magetsi pane kuvimba nechinhu chinogadzirisa masaini kuti chigadzirise kusagadzikana kunodzivisika. Midziyo iyi inofanira kusarudzwa kuti ienderane nekwainotangira/kunotangira magetsi uye bhajeti remugero pane kuwedzerwa senzira yekugadzirisa.
• ESD kudzivirira: Zvinobatanidza zveHDMI zvinosvikika nyore nyore. Zvikamu zvekudzivirira zvinofanirwa kuenzana nekudzivirira kwemvura inoputika nekuremerwa kwezvirwere zvishoma munzira yekumhanya kukuru.
• Kuvimbika kwesimba/wachi: HDMI switch/transceiver, MCU nevanotonga vemunharaunda vanoda marails akachena uye mawachi ekutarisa anodzorwa kudzivirira kuvhunduka kana kushanduka kwechiteshi kusina kuvimbika. Kuronga EMI kunogonawo kuongororwa kuti kuonekwe kana Dhizaini yeEMI/EMC PCB miitiro.

Sei RFQ ichifanira kutsanangura FRL/TMDS pachinzvimbo che "HDMI 2.1" kana "HDMI 2.2" chete?

Nekuti zvigadzirwa zvinogona kushandisa zvikamu zvakasiyana zveHDMI uye mwero wekubatanidza wakasiyana. Kurongeka kwePCB, sarudzo ye retimer, bhajeti ye connector channel uye michina yekuyedza zvinoenderana nemodhi chaiyo yemagetsi uye bandwidth inodiwa, kwete label yekushambadza.

PCB yekuchinja inoda redriver kana retimer riini?

Zvinoenderana nekurasikirwa kwese kwekuisa, kufungidzira kweconnector/cable, kugona kweswitch-device uye huwandu hwedata rakananga. Nzira chaiyo ndeyekutarisa bhajeti rechiteshi uye kusimbisa nzira yemagetsi; conditioner yesignal haifanirwe kuwedzerwa chete nekuti bhodhi rakakura.

2. EDID, HPD, CEC, HDCP uye Fast-Port-Switching Control

Kuchinjana kweHDMI hakusi kungoshandisa ma "routing" e "high-speed" chete. Nzvimbo yekudzora inofanirwa kuita kuti sosi yega yega itende kuti yakabatana nesinki inoshanda uye kugadzirisa shanduko kana "input" yakasarudzwa ikachinja.

• Kutarisira EDID: Chinotumira cheMCU kana HDMI chinofanira kuratidza kugona kwekuratidzira kwacho kune imwe neimwe sosi. Mutemo weEDID unogona kugadziriswa, kukopwa kubva pasinki kana kugadzirwa kubva kumutemo wezvigadzirwa.
• Kuona Plug Inopisa: HPD nguva uye maitiro ekurova kwemoyo zvinofanirwa kutevedzera mhinduro yeHDMI yakasarudzwa uye firmware. Switch yebhodhi-level inochinja nzira dzekumhanya kwepamusoro isina kubata HPD nemazvo inogona kuita seisingavimbike kunyangwe kana zviratidzo zvacho zvakanaka.
• Nzira yeDDC: Mitsetse yeSCL/SDA inoda kudhonzwa zvakanaka, kubatwa zvakanaka uye kutakura mabhazi. Marongerwo avo nenzira yekuchinjana zvinofanira kunyorwa pamwe chete neEDID storage.
• CEC: Maitiro eCEC routing uye pull-up/standby-power anofanirwa kutsigirwa chete kana chigadzirwa chichida izvozvo.
• Maitiro ekudzokorora HDCP: Makiyi, firmware ine rezenisi uye kusimbiswa kwezvigadzirwa zvinodzorwa nevatengi. Mugadziri wechibvumirano anofanira kuronga nekuyedza chete kufamba kwezvigadzirwa kwakachengeteka kwakatenderwa.

Nzira idzi dzekudzora dzinoita kuti HDMI switch yemazuva ano ive pedyo nesystem diki yakamboiswa pane passive selector. Saka Firmware revision inofanira kuramba yakabatana ne switch IC nePCB revision.

3. Kuungana kwePCB, Kudzora neKuongorora Chinongedzo Chekumhanya Kwepamusoro

MaPCBA eHDMI switch anogona kunge aine maQFN/BGA transceivers, maconnector akawanda, maESD arrays, makristaro uye MCU. Kurongeka kwemechanical uye mhando yesolder-joint zvakakosha nekuti connector yega yega iinterface yekunze inomhanya zvakanyanya.

• Kuungana kwePCB kunomhanya kwazvo: Highleap inogona kupa Pcb gungano yeHDMI transceivers, ma arrays ekudzivirira ane capacitance yakaderera, ma MCU uye mitsetse yekubatanidza ine maport akawanda.
• Kuwanikwa kwezvinhu kunodzorwa: MaIC eSwitch/transceiver, retimers, oscillators uye zvikamu zveESD zvinofanirwa kutevedzera zvinotenderwa nevatengi chikamu chekutsvaga mitemo.
• AOI: AOI muPCBA inogona kuona majoini ekubatanidza, mapassive, kurongeka kwemudziyo uye huwandu hwevanhu vasati vaungana.
• Kuongorora majoini akavanzika: Mapakeji eBGA/LGA anogona kuongororwa ne X-ray kuongorora kana zvichidikanwa nehurongwa hwemhando yepamusoro.
• Geometry yekubatanidza: Mareceipts eHDMI anofanira kuongororwa kuti aonekwe kana ari coplanarity, shell soldering uye nzvimbo kana tichienzanisa nepaneru yakachekwa.

Chii chinofanira kuratidzwa nechinhu chekutanga chekuchinja chinja chisati chaburitswa?

Inofanira kusimbisa kukodzera kweconnector, kurongeka kweswitch/transceiver, mashandiro eEDID/HPD, kukiya masignal pane yega yega input, maitiro ekupisa uye programmed firmware configuration. Kuongorora kwekutanga kunogona kunyora izvi zvisati zvaburitswa. Mufananidzo unobudirira kubva pachiteshi chimwe chete hauna kukwana kuburitsa dhizaini ye multi-input.

4. Kuedza Kunoshanda uye Kugamuchirwa kweHDMI Switch yePort-by-Port

Kuedzwa kwefekitori kunofanira kushandisa zvese zvinopinda uye zvinobuda pasi pemodhi yekubatanidza yakatsanangurwa. Jenareta yevhidhiyo chaiyo, mudziyo wekubva, kureba kwetambo uye sinki zvinofanira kutaurwa kuitira kuti mhedzisiro idzokororwe.

• Kukiya vhidhiyo yepoteri yese: Iva nechokwadi chekuti chinhu chega chega chinogona kusarudzwa uye gadzira mamiriro anotarisirwa evhidhiyo/odhiyo pakubuda.
• Maitiro eEDID/HPD: Tarisa maitiro ekuona uye kuchinja mashandisirwo emagetsi anotsanangurwa nemutengi mushure mekutenderera kwesimba uye shanduko yechiteshi.
• Modhi yebandwidth yepamusoro: Shandisai nzira yedata yakasarudzika yekugadzirwa kwete kungoshandisa mufananidzo usina resolution yakakwana chete.
• Sarudzo dzeOdhiyo/CEC/eARC: Edzai chete zvinhu zvakazadzwa uye zviri muchikamu chechigadzirwa.
• FCT yekugadzira: Highleap inogona kushandisa zvinodiwa nevatengi kushanda kushanda uchishandisa mapatani ebvunzo akatenderwa, firmware, zvigadziriso uye miganhu yekupasa/kukundikana.

5. Kuburitswa Kwekugadzirwa uye RFQ Data yeHDMI Switch PCB Manufacturing

RFQ yakazara inofanira kuratidza chinobatanidza chemagetsi chaicho uye maitiro ekudzora anodiwa pachiteshi chega chega. Izvi zvinodzivirira mutengo wakavakirwa pabandwidth yakaderera kana seti yezvinhu zviri nyore kupfuura zvinotarisirwa nechikwata chemainjiniya ezvigadzirwa.

• Ruzivo rwekugadzira: Yakaburitswa stack-up, impedance targets, layer count, finished cruise uye connector-edge geometry.
• Magadzirirwo eHDMI: Switch/transceiver MPN, huwandu hwezvinopinzwa, huwandu hwezvinobuda, chinangwa cheTMDS/FRL, zvishandiso zve retimer/redriver uye clocking.
• Pakeji yekudzora: MCU, mutemo weEDID, maitiro eHPD, sarudzo dzeCEC/eARC uye zvinodiwa zvekuchengetedza mapurogiramu.
• Pasuru yekuunganidza: BOM, data rekuisa, mifananidzo yekubatanidza, maMPN eESD device uye manotsi akakosha ekudzokorora.
• Kushanda bvunzo: Zvinodiwa panobva/sink, fungidziro dzetambo, mamodhi evhidhiyo uye zvinodiwa pakugamuchira port-by-port.

Rondedzero yeRFQ yekugadzirwa

• Mafaira ekugadzira PCB akaburitswa uye manotsi ekudzivirira
• MaMPN eSwitch/transceiver uye masignal-conditioner
• Mepu yechiteshi cheHDMI uye nzira dzevhidhiyo/link dzakatarwa
• Zvinodiwa zve firmware yeEDID/HPD/CEC/HDCP
• Dhirowa yemusangano uye data rekubatanidza
• Maitiro ekuyedza mashandiro ePort-by-port
• Muenzaniso, chiyero chekutanga kana huwandu hunodzokororwa
• Zvinodiwa pakutevedza uye kurongedza

Highleap Electronics inotsigira kugadzirwa kwePCB uye kubatanidzwa kwezvigadzirwa zveHDMI zvakagadzirwa nevatengi. Kugadzirwa kunoitwa kubva papakeji yeinjiniya yakaburitswa; Highleap hairevi kuti switch yakapedzwa inotevedzera HDMI/HDCP kunze kwekunge zvinodiwa zvacho zviri chikamu chepurojekiti yacho.