Mga Tampok ◊ Suportahan ang 4x25GBASE-SR application ◊ Sumusunod sa QSFP28 MSA SFF-8636 at SFP28 MSA SFF-8431 at SFF- 8472 ◊ Multi rate na hanggang 25.78125Gbps bawat lane ◊ Distansya ng paghahatid hanggang 50m ◊ ◊ single power supply +3.3.3. pagkonsumo ng kuryente ◊ UL certification cables (opsyonal) ◊ Operating temp Commercial: 0°C hanggang +70 °C ◊ RoHS compliant Applications ◊ 4x25Gbe-SR ◊ Iba pang optical links Detalye: Absolute Maximum Ratings Table1- Absolute Maximum Ratings Parameter Symbol Min. Karaniwang Max. Mga Unit Notes Supply Voltage Vcc3 -0.5 - +3.6 V Temperatura ng Storage Ts -10 - +70 °C Operating Humidity RH +5 - +85 % 1 Tandaan: 1 Walang condensation Inirerekomendang Operating Condition Table 2- Inirerekomendang Operating Conditions Parameter Symbol Min. Karaniwang Max. Unit Notes Operating Temperature TC 0 - +70 °C Power Supply Voltage Vcc 3.14 3.3 3.47 V Power Dissipation bawat QSFP28 Pd - - 2.5 W Power Dissipation bawat SFP28 Pd - - 1.0 W 1 Bit Rate bawat Lane BR 10.3125 25.3125 25.3185 Bawat terminal Electrical Mga Katangian Talahanayan 3- Mga Katangiang Elektrikal para sa Simbolo ng Parameter ng QSFP28 Min. Typ. Max. Mga Unit Notes ModSelL Module Piliin ang VOL 0 - 0.8 V Module Alisin sa pagkakapili ang VOH 2.5 - VCC V LPMode Low Power Mode VIL 0 - 0.8 V Normal Operation VIH 2.5 - VCC+0.3 V ResetL Reset VIL 0 - 0.8 V Normal Operation VIH 2.5 - VCC+0.3 V ModPrsL Normal na Operasyon VOL 0 - 0.4 V IntL Interrupt VOL 0 - 0.4 V Normal na Operasyon VoH 2.4 - VCC V Mga Katangian ng Electrical Transmitter Differential Date Input Swing Vin,PP 200 - 1600 mV Output Differential Impedance ZIN 90 100 110 Ω Mga Katangian ng Electrical Receiver 200 Erpute VPP Output 2 Bit Output VPP Differential Data Rate BER E-12 1 Input Differential Impedance ZD 90 100 110 Ω Tandaan: 1 PRBS2^31-1@25.78125Gbps Talahanayan 4- Mga De-koryenteng Katangian para sa SFP28 Parameter Symbol Min. Typ. Max. Mga Yunit Mga Tala Mga Katangian ng Electrical Transmitter Differential Data Input Swing Vin,PP 200 - 1600 mVPP Input Differential Impedance ZIN 90 100 110 Ω Tx_Fault Normal na Operasyon VOL 0 - 0.8 V Transmitter Fault VOH 2.0 - VCC V0 Normal na Operasyon V Tx_DisH0 2.0 - VCC+0.3 V Mga Katangian ng Electrical Receiver Differential Date Output Vout 400 - 800 mV Bit Error Rate BER - - E-12 - Output Differential Impedance ZD 90 100 110 Ω Rx_LOS Normal Operation VOL 0 - 0.8 VCC V Lose Signal Pin arrangement Figure 1, Pin View para sa QSFP28 Table 5- Pin Function Definition para sa QSFP28 Pin Symbol Name/Description Notes 1 GND Ground 1 2 Tx2n Transmitter Inverted Data Input 3 Tx2p Transmitter Non-Inverted Data Input 4 GND Ground 1 5 Tx4n Transmitter Inverted Non-Input ng Data 6 Tx4n Transmitter Inverted Non-Input ng Data 6 Inverted Data Input 7 GND Ground 1 8 ModSelL Module Select 9 ResetL Module Reset 10 Vcc Rx +3.3V Power Supply Receiver 11 SCL 2-wire serial interface clock 12 SDA 2-wire serial interface data 13 GND Ground 1 14 Rx3p Receiver Non-Inverted Data Output 15 Rx3n Inverted Data Output 15 Rx3n Receiver Output ng Data 16 GND Ground 1 17 Rx1p Receiver Non-Inverted Data Output 18 Rx1n Receiver Inverted Data Output 19 GND Ground 1 20 GND Ground 1 21 Rx2n Receiver Inverted Data Output 22 Rx2p Receiver Non-Inverted Data Output 43 GND4 Receiver Receiver Non-Inverted Data Output 43 GND4 Pin Symbol Name/Description Notes 25 Rx4p Receiver Non-Inverted Data Output 26 GND Ground 1 27 ModPrsL Module Present 28 IntL Interrupt 29 Vcc Tx +3.3V Power supply transmitter 30 Vcc1 +3.3V Power supply 31 LPMode GND Low Power Mode 32 33 Tx3p Transmitter Non-Inverted Input ng Data 34 Tx3n Transmitter Inverted Data Input 35 GND Ground 1 36 Tx1p Transmitter Non-Inverted Data Input 37 Tx1n Transmitter Inverted Data Input 38 GND Ground 1 Tandaan: 1. Ang circuit ground ay panloob na nakahiwalay sa chassis ground. Figure 2, Pin View para sa SFP28 Table 6-Pin Function Definition Pin Symbol Name/Description Notes 1 VEET Module Transmitter Ground 1 2 TX_FAULT Module Transmitter Fault 2 3 TX_DISABLE Transmitter Disable; Ino-off ang 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 Absent, konektado sa VEET o VEER sa module 2 7 RS0 Rate Piliin ang 0, opsyonal na kinokontrol ang SFP+ module receiver 4 8 RX_LOS Receiver Pagkawala ng Signal Indication (Sa FC na itinalaga bilang Rx_LOS at sa Ethernet na itinalaga bilang HINDI Signal Detect) 2 9 RS1 Rate Select 1, opsyonal na kinokontrol ang SFP+ module transmitter 4 Pin Symbol Name/Description Notes 10 VEER Module Receiver Ground 1 11 VEER Module Receiver Ground 1 12 RD - Receiver Inverted Data Output 13 RD+ Receiver Non-Inverted Data Output 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 TD+ Transmitter Non-Inverted TD Data Input VEET19 Inverted Data Input 19 Transmitter Ground 1 Tandaan: Ang module ground pin ay nakahiwalay sa module case. Ang mga pin ay dapat hilahin pataas gamit ang 4.7K-10Kohms sa isang boltahe sa pagitan ng 3.14V at 3.46V sa host board. Ang pin ay hinila pataas sa VCCT na may 4.7K-10KΩ risistor sa module. Tingnan ang SFF-8472 Rev12.2 Talahanayan 10-2. Inirerekomendang Circuit Figure 3, Recommended Interface Circuit para sa QSFP28 Figure 4, Recommended Host Board Power Supply Circuit para sa SFP28 Figure 5, Recommended Interface Circuit para sa SFP28 Monitoring Specification Figure 6, Memory Map para sa QSFP28 Figure SFP8 Figure 7 mm, Memory Map para sa QSFP28 Figure 7 mm. , Mechanical Diagram Talahanayan 7- Haba ng Cable Haba ng Cable L1（Unit: m） Mapagparaya（Yunit: cm） ≤1.0 +5/-0 1.0＜L≤4.5 +15/-0 4.5＜L≤14.5＜L≤14.5＞10.5 ＞ +2%/-0 Talahanayan 8- Breakout Cable Nominal Length Kabuuang Haba L1 (Unit: m) Breakout Point Sinusukat mula sa SFPL2(Unit: m) 1 0.7 2 1.4 3 2 ≥5 3 Mga Babala Mga Pag-iingat sa Paghawak: Ang device na ito ay madaling masira bilang resulta ng electrostatic discharge (ESD). Ang isang static na libreng kapaligiran ay lubos na inirerekomenda. Sundin ang mga alituntunin ayon sa wastong pamamaraan ng ESD. Kaligtasan ng Laser: Ang radiation na ibinubuga ng mga laser device ay maaaring mapanganib sa mata ng tao. Iwasan ang pagkakalantad ng mata sa direkta o hindi direktang radiation.