Likarolo ◊ Ts'ehetso ea 4x25GBASE-SR kopo ◊ E lumellana le QSFP28 MSA SFF-8636 le SFP28 MSA SFF-8431 le SFF- 8472 ◊ Sekhahla se sengata sa ho fihla ho 25.78125Gbps ka tsela ◊ Phepelo ea motlakase e le 'ngoe ◊ 3 phepelo ea matla ho fihla ho 5 Low + 0 V. matla tshebediso ◊ UL certification cables (boikhethelo) ◊ Mocheso o sebetsang Khoebo: 0°C ho +70 °C ◊ RoHS e lumellanang Likopo ◊ 4x25Gbe-SR ◊ Lihokelo tse ling tsa optical Tlhaloso: Absolute Maximum Ratings Table1- Absolute Maximum Ratings Minimbos. Tloaelehileng Max. Unit Notes Supply Voltage Vcc3 -0.5 - +3.6 V Storage Mocheso Ts -10 - +70 °C Operating Humidity RH +5 - +85 % 1 Tlhokomeliso: 1 Ha ho condensation Recommended Operating Conditions Lethathamo la 2- Maemo a khothalletsoang a ho sebetsa Parameter Letšoao la Min. Tloaelehileng Max. Unit Notes Operating Temperature TC 0 - +70 °C Power Supply Voltage Vcc 3.14 3.3 3.47 V Power Dissipation per QSFP28 Pd - - 2.5 W Power Dissipation per SFP28 Pd - - 1.0 W 1 Bit Rate per Lane BR 28 12 Notes per Lane BR 28 10. 1 Per terminal Litšobotsi tsa Motlakase Lethathamo la 3- Litšobotsi tsa Motlakase bakeng sa QSFP28 Parameter Symbol Min. Tlanya. Max. Units Notes ModSelL Module Khetha VOL 0 - 0.8 V Module O sa Khetha VOH 2.5 - VCC V LPMode Mode e Motla oa Matla VIL 0 - 0.8 V E Tloaelehileng Operation VIH 2.5 - VCC +0.3 V ResetL Reset VIL 0 - 0.8 V Tloaelehileng Operation VIH + 0.5 VCC + 0. V ModPrsL Ts'ebetso e Tloaelehileng VOL 0 - 0.4 V IntL Interrupt VOL 0 - 0.4 V Normal Operation VoH 2.4 - VCC V Motlakase Transmitter Characteristics Differential Date Input Swing Vin,PP 200 - 1600 mV Output Differential Impedance ZIN 90 100 100 110 Motlakase oa Phapang Swing Vout 200 - 800 mVPP Bit Error Rate BER E-12 1 Input Differential Impedance ZD 90 100 110 Ω Tlhokomeliso: 1 PRBS2^31-1@25.78125Gbps Lethathamo la 4- Litšobotsi tsa Motlakase tsa Paramethara ea SFP28 Tlanya. Max. Likarolo tsa Lintlha tsa Motlakase Litšobotsi tsa Phapang ea Boitsebiso Swing Vin,PP 200 - 1600 mVPP Input Differential Impedance ZIN 90 100 110 Ω Tx_Fault Normal Operation VOL 0 - 0.8 V Transmitter Fault VOH 20 - Normal VOH 20. 0.8 v Laser Disable VIH 2.0 - vcc + 000 mv - Signal VoH 2.0 - VCC V Pin arrangement Figure 1, Pin View for QSFP28 Table 5- Pin Function Definitions for QSFP28 Pin Symbol Name/Tlhaloso Notes 1 GND Ground 1 2 Tx2n Transmitter Inverted Data Input 3 Tx2p Transmitter Non-Inputter data 1 5 Tx4n Kenyeletso ya Ditaba e Fetileng 6 Tx4p Transmitter Non-Inverted Data Input 7 GND Ground 1 8 ModSelL Module Kgetha 9 ResetL Module Reset 10 Vcc Rx +3.3V Moamohedi wa Phepelo ya Matla 11 SCL 2-wire serial interface clock 11 serial data 2 GND Sebaka sa 114 Sephetho sa Rx3p Receiver se sa Keneng 15 Rx3n Receiver Sehlahisoa sa data se khelohileng 16 GND Ground 1 17 Rx1p Moamoheli ea sa Keneng Sephetho sa data 18 Rx1n Receiver Sehlahisoa sa data se khelohileng 19 GND Ground 1 20 Ground Reciver 1 20 Ground Recipe Sehlahisoa 22 Rx2p Moamoheli Sephetho sa data se sa Keneng 23 GND Ground 1 24 Rx4n Moamoheli oa Phatlalatso ea Inverted Pin Letšoao la Letšoao la Lebitso / Lintlha tsa Tlhaloso 25 Rx4p Receiver Sephetho sa Lintlha tse sa Keneng 26 GND Ground 1 2 Module 29 VPSCCRS Tx +3.3V Motlakase oa phepelo ea matla 30 Vcc1 + 3.3V Phepelo ea Matla 31 LPMode Mokhoa o Motla oa Matla 32 GND Ground 1 33 Tx3p Transmitter Non-Inverted Data Input 34 Tx3n Transmitter Inverted Data Input 35 GND Ground 1 36 Transmitter Input No1p Tx1n Phatlalatso e Inverted Data 38 GND Ground 1 Tlhokomeliso: 1. Sebaka sa potoloho se arotsoe ka hare ho sebaka sa chassis. Setšoantšo sa 2, Pin View for SFP28 Table 6-Pin Function Definitions Pin Symbol Name / Tlhaloso Notes 1 VEET Module Transmitter Ground 1 2 TX_FAULT Module Transmitter Fault 2 3 TX_DISABLE Transmitter Disable; E tima transmitter laser output 3 4 SDA 2-Wire Serial Interface Data Line (MOD-DEF2) 5 SCL 2-Wire Serial Interface Clock (MOD-DEF1) 6 MOD_ABS Module Ha e eo, e amanang le VEET kapa VEER mojulung oa 2 7 RS0 Rate Khetha 0, ka boikhethelo e laola SFP + moamoheli oa module 4 8 RX_LOS Tahlehelo ea Moamoheli ea Pontšo ea Pontšo (Ho FC e khethiloeng e le Rx_LOS le ho Ethernet e khethiloeng e le NOT Signal Detect) 2 9 RS1 Rate Khetha 1, ka boikhethelo e laola SFP + module transmitter 4 Pin Symbol Name/Tlhaloso Notes 10 VEER Module Receiver Ground 1 11 VEER Module Receiver 12 Ground Sehlahisoa sa data se Inverted ea RD-Receiver 13 Sehlahisoa sa RD + se sa Hlakoeng 14 VEER Module Receiver Ground 1 15 VCCR Module Receiver 3.3 V Supply 16 VCCT Module Transmitter 3.3 V Supply 17 VEET Module Transmitter Ground 1 18 TD+ Transmitter 18 TD + Transmitter Data Inverted 19 TD + Transmitter Inputter 9 Input 20 VEET Module Transmitter Ground 1 Tlhokomeliso: Lithakhisa tsa mobu oa module li arohane le mokotla oa module. Lithakhisa li tla huleloa ka 4.7K-10Kohms ho motlakase o pakeng tsa 3.14V le 3.46V ho board board. Pini e huleloa ho VCCT ka 4.7K-10KΩ resistor moduleng. Sheba SFF-8472 Rev12.2 Lethathamo la 10-2. Recommended Circuit Figure 3, Recommended Interface Circuit for QSFP28 Figure 4, Recommended Host Board Power Supply Circuit for SFP28 Figure 5, Recommended Interface Circuit for SFP28 Monitoring Specification Figure 6, Memory , SFP28 Map for QFP Fimory8 Mechanical Unit mm Figure 8, Mechanical Diagram Table 7- Cable Length Cable Length L1 (Unit: m） Tolerant (Unit: cm) ≤1.0 +5/-0 1.0＜L≤4.5 +15/-0 5≤5 +15/-0 4.5 ≤1. 30/-0 ＞14.5 +2%/-0 Lethathamo la 8- K'habole ea Phahamiso Nominal Length Kakaretso ea Length L1 (Unit: m) Breakout Point Measured ho tloha SFPL2(Unit: m) 1 0.7 2 1.4 3 2 ≥5 3 Litemoso Ho sebetsana le Litlhokomeliso: Sesebelisoa sena sea khoneha: ho senya ka lebaka la electrostatic discharge (ESD). Tikoloho e se nang botsitso e khothaletsoa haholo. Latela litataiso ho latela mekhoa e nepahetseng ea ESD. Tšireletseho ea Laser: Mahlaseli a hlahisoang ke lisebelisoa tsa laser a ka ba kotsi mahlong a batho. Qoba ho pepesehela mahlaseli a kotsi ka kotloloho kapa a sa tobang.