Iimpawu ◊ Inkxaso yesicelo se-4x25GBASE-SR ◊ Ithobelana ne-QSFP28 MSA SFF-8636 kunye ne-SFP28 MSA SFF-8431 kunye ne-SFF- 8472 ◊ Izinga le-Multi ukuya kwi-25.78125Gbps ngelayini nganye ◊ Ukuhanjiswa kwe-3 umgama ophantsi ◊ umgama wokuhanjiswa kwe-3 ◊ umgama ophantsi we-V ◊0 amandla ukusetyenziswa ◊ iintambo zesatifikethi ze-UL (ukhetho) ◊ Ithempele yokuSebenza: 0°C ukuya +70 °C ◊ RoHS ezithobelayo Izicelo ◊ 4x25Gbe-SR ◊ Amanye amakhonkco optical Inkcazo: Itheyibhile ePhetheyo ePhezulu yokuKhathalela iTheyibhuli1- I-Absolute Maximum ratings Ratings Minimbos. Ubukhulu obuqhelekileyo. Iyunithi yeeNqaku zoBonelelo lweVoltage Vcc3 -0.5 - +3.6 V Ubushushu boGcino Ts -10 - +70 °C Ukufuma okuSebenzayo RH +5 - +85 % 1 Qaphela: 1 Akukho condensation eCetyisiweyo yeeMeko zokuSebenza Itheyibhile 2- Iimeko zokusebenza ezicetyiswayo Iparamitha Isimboli seMiz. Ubukhulu obuqhelekileyo. Amanqaku eyunithi yokuSebenza koBubushushu TC 0 - +70 °C Unikezelo lwaMandla oMbane Vcc 3.14 3.3 3.47 V Ukukhutshwa kwamandla nge-QSFP28 Pd - - 2.5 W Ukukhutshwa kwamandla nge-SFP28 Pd - - 1.0 W 1 Inqanaba leBit ngeNdlela BR 72512 10. I-1 ye-terminal yeempawu zoMbane Itheyibhile 3- Iimpawu zoMbane ze-QSFP28 iParameter Symbol Min. Isichwethezo. Max. Iiyunithi zamanqaku eModyuli yeModyuli Khetha i-VOL 0 - 0.8 V Imodyuli engakhethiyo i-VOH 2.5 - VCC V LPMode Imowudi yaMandla aPhantsi VIL 0 - 0.8 V Ukusebenza okuqhelekileyo VIH 2.5 - VCC +0.3 V Ukuseta kwakhona i-VIL 0 - 0.8 V Ukusebenza okuqhelekileyo - VCC + 0.5. V ModPrsL Ukusebenza okuQhelekileyo VOL I-0 - 0.4 V I-IntL yokuphazamisa i-VOL 0 - 0.4 V yoMsebenzi oQhelekileyo i-VoH 2.4 - i-VCC V ye-Electrical Transmitter Characteristics Differential Date Input Input Vin, PP 200 - 1600 mV Isiphumo soDifferential Impedance ZIN 90 100 100 110 Umbane oMbane oKhethekileyo Swing Vout 200 - 800 mVPP Impazamo yeBit Rate BER E-12 1 Input Differential Impedance ZD 90 100 110 Ω Qaphela: 1 PRBS2^31-1@25.78125Gbps Itheyibhile 4- Iimpawu zoMbane zeSiymbo ye-SFP28 ye-SFP2 Isichwethezo. Max. Iiyunithi Amanqaku IiMpawu zoMbane zoThutho loMbane IiNgcaciso eziFanelekileyo zeDatha zoNgeniso lwe-Swing Vin, PP 200 - 1600 mVPP Input Differential Impedance ZIN 90 100 110 Ω Tx_Fault Operation Normal Operation VOL 0 - 0.8 V Transmitter Fault VOH VOH 2. I-0.8 V Laser Khubaza i-VIH 2.0 - VCC+0.3 V Iimpawu zoMmkeli woMbane Iimpawu Umahluko Umhla wokuPhumayo i-Vout 400 - 800 mV i-Bit Error Rate BER - - E-12 - I-Output Differential Impedance ZD 90 100 110 Ω Ω 8 Ω Ω 8 Ω Ω 8 Ω Ω Ω 8 Ω Ω 0 Ω 8 Ω Ω 0 Ω 8 Ω Ω 0 Ω 0 Ω 0 Ω 0 Ω 8 Ω 0 Ω 0 Ω 8 Ω 0 Ω 0 Ω 8 Ω 0 Ω 8 Ω 0 Ω 0 Ω 8 Ω 0 Ω 0 Ω 8 Ω 0 Ω 8 Ω 0 Ω 0 Ω 8 Ω Umqondiso we-VoH 2.0 - i-VCC V ilungiselelo le-Pin Umfanekiso 1, i-Pin View ye-QSFP28 Itheyibhile 5- I-Pin Function Definitions ye-QSFP28 I-Pin yeSimboli yegama/Amanqaku eNkcazo 1 GND Ground 1 2 Tx2n Transmitter Inverted Data Input 3 Tx2p Transmitter ye-GG Non-Input 1 5 Tx4n UNgeniso lweDatha eGuquliweyo 6 Tx4p Ungeniso lweDatha olungaGuqulwanga 7 GND uMgangatho 1 8 ModSelL Imodyuli Khetha 9 Ukuseta kwakhona iModyuli yeModyuli 10 Vcc Rx +3.3V IsiXhobo soMbane soMbane 11 SCL I-2-wire serial interface ikloko yojongano lwewotshi ye-serial ye-2 yedatha GND Umhlaba we-114 I-Rx3p i-Receiver ye-Non-Inverted Data Output 15 i-Rx3n i-Receiver kwi-Inverted Data Output 16 GND Ground 1 17 Rx1p i-Receiver ye-Non-Inverted ye-Data Isiphumo se-18 Rx1n i-Receiver ye-Inverted Data 19 GND Ground Ground 1 20 GND I-Ground ye-Ground 1 20 ye-Ground ye-Ground 1 20 i-Ground ye-Ground Imveliso ye-22 i-Rx2p i-Receiver ye-Non-Inverted Data Output 23 GND Ground 1 24 Rx4n i-Receiver ye-Inverted ye-Receiver ye-Inverted yePin yeSimboli yegama/Amanqaku eNkcazo 25 i-Rx4p i-Receiver ye-Non-Inverted Data Output 26 GND Ground 1 27 Module 29 I-Present VPSCCRS Tx + 3.3V Umbane wokuhambisa umbane 30 Vcc1 + 3.3V Unikezelo lwamandla 31 LPMode Imowudi yaMandla aphantsi 32 GND Ground 1 33 Tx3p Transmitter Ungeniso lweDatha engaguqukiyo 34 Tx3n Transmitter Inverted Data Input 35 GND Ground 1 36 Transmitter Input Input 7 Tx1n I-Transmitter Inverted Data Input 38 GND Ground 1 Qaphela: 1. Umhlaba wesekethe ubekwe wodwa ngaphakathi kumhlaba we-chassis. Umzobo we-2, i-Pin View ye-SFP28 Itheyibhile ye-6-Pin Function Definitions Pin Symbol Name / Inkcazo yeNkcazo 1 VEET Module Transmitter Ground 1 2 TX_FAULT Module Transmitter Fault 2 3 TX_DISABLE Transmitter Disable; Icima imveliso ye-laser transmitter 3 4 SDA 2-Wire Interface Data Line Line (MOD-DEF2) 5 SCL 2-Wire Serial Interface Clock (MOD-DEF1) 6 MOD_ABS Imodyuli engekho, eqhagamshelwe kwiVEET okanye VEER kwimodyuli 2 7 RS0 Rate Khetha i-0, ngokukhetha ulawula i-SFP+ umamkeli wemodyuli 4 8 ​​RX_LOS Ilahleko yoMamkeli yeSibonakaliso soMqondiso (Kwi-FC echongiweyo njenge-Rx_LOS kunye ne-Ethernet echongiweyo njenge-NOT Signal Detect) 2 9 RS1 Rate Khetha i-1, ilawula ngokuzithandela i-SFP + imodyuli yokuhambisa i-4 I-Pin yeSimboli Igama / Amanqaku eNkcazo 10 VEER iModyuli yoMfumani uMgangatho 1 11 VEER iModyuli yoMfumani 12 iGround I-RD-I-Receiver ye-Inverted Data Output 13 I-RD + i-Receiver yeNkcazelo engaguqukiyo ye-14 VEER iModyuli yoMfumani weModyuli 1 15 i-VCCR yeModyuli yokufumana iModyuli 3.3 V Ukubonelela nge-16 VCCT iModyuli yokuThumela i-3.3 V Ukubonelela nge-17 VEET Module Transmitter Ground 1. Igalelo 20 I-VEET Module Transmitter Ground 1 Qaphela: Izikhonkwane zomhlaba wemodyuli zodwa kwimeko yemodyuli. Izikhonkwane ziya kutsalwa phezulu nge-4.7K-10Kohms ukuya kumbane ophakathi kwe-3.14V kunye ne-3.46V kwibhodi yokusingatha. I-pin itsalwa ukuya kwi-VCCT kunye ne-4.7K-10KΩ resistor kwimodyuli. Jonga i-SFF-8472 Rev12.2 Itheyibhile 10-2. ISekethe yeSekethe eCetyisiweyo 3, iSekethe yoNxibelelwano eCetyisiweyo yeQSFP28 Isazobe 4, iSindululo seBhodi yoMququzeleli weSibonelelo soMbane weSekethe ye-SFP28 uMzobo 5, iSekethe ye-Interface eCetyisiweyo ye-SFP28 iNkcazelo yokuBeka eMoni 6, iMemori ye-Memory28 yeMaphu ye-SFP ye-QFP28 Mechanical Unit mm Umfanekiso 8, Mechanical Diagram Itheyibhile 7- Cable Ubude Cable Ubude L1 (Iyunithi: m) Ukunyamezela (Iyunithi: cm) ≤1.0 +5/-0 1.0＜L≤4.5 +15/-0 5≤5 +15/-0 4.5≤5. 30/-0 ＞14.5 +2%/-0 Itheyibhile 8- Ikhebhula yokuqhawuka Ubude boBubude bubonke L1 (Iyunithi: m) Indawo yokuQhutywa iMetyaniswa ukusuka kwiSFPL2(Iyunithi: m) 1 0.7 2 1.4 3 2 ≥5 3 Izilumkiso zoHambo olufanelekileyo: Esi sixhobo sifanelekile ukonakalisa ngenxa ye-electrostatic discharge (ESD). Indawo engatshintshiyo ekhululekileyo iyacetyiswa kakhulu. Landela izikhokelo ngokweenkqubo ezifanelekileyo ze-ESD. Ukhuseleko lweLaser: Imitha ekhutshwa zizixhobo zelaser inokuba yingozi emehlweni abantu. Kuphephe ukuvezwa kwamehlo kwimitha ethe ngqo okanye engathanga ngqo.