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SFP+-10GBASE-T Copper Small Form Pluggable (SFP) transceivers are based on the SFP Multi Source Agreement (MSA) . They are compatible with the 10Gbase-T / 5Gbase-T / 2.5Gbase-T / 1000base-T standards as specified in IEEE Std 802.3 . SFP+-10GBASE-T uses the SFP’s RX_LOS pin for link indication. If pull up SFP’s TX_DISABLE pin, PHY IC be reset.
Low-Speed Signals
MOD_DEF(1) (SCL) and MOD_DEF(2) (SDA), are open drain CMOS signals (see section VII, “Serial Communication Protocol”). Both MOD_DEF(1) and MOD_DEF(2) must be pulled up to host_Vcc
| Low-Speed Signals, Electronic Characteristics | |||||
| Parameter | Symbol | Min | Max | unit | Notes/Conditions |
| SFP Output LOW | VOL | 0 | 0.5 | V
| 4.7k to 10k pull-up to host_Vcc, measured at host side of connector |
| SFP Output HIGH | VOH | host_Vcc -0.5 | host_Vcc + 0.3 | V
| 4.7k to 10k pull-up to host_Vcc, measured at host side of connector |
| SFP Input LOW | VIL | 0 | 0.8 | V | 4.7k to 10k pull-up to Vcc, measured at SFP side of connector
|
| SFP Input HIGH | VIH | 2 | Vcc + 0.3 | V | 4.7k to 10k pull-up to Vcc, measured at SFP side of connector |
High-Speed Electrical Interface
All high-speed signals are AC-coupled internally.
| High-Speed Electrical Interface, Transmission Line-SFP | ||||||
| Parameter | Symbol | Min | Typ | Max | unit | Notes/Conditions |
| Line Frequency | fL | 125 | MHz | 5-level encoding, per IEEE 802.3 | ||
| Tx Output Impedance | Zout,TX | 100 | Ohm | Differential, for all frequencies between 1MHz and 125MHz | ||
| Rx Input Impedance | Zin,RX | 100 | Ohm | Differential, for all frequencies between 1MHz and 125MHz | ||
| High-Speed Electrical Interface, Host-SFP | ||||||
| Parameter | Symbol | Min | Typ | Max | unit | Notes/Conditions |
| Single ended data input swing | Vinsing | 250 | 1200 | mV
| Single ended | |
| Single ended data output swing | Voutsing | 350 | 800 | mV | Single ended | |
| Rise/Fall Time | Tr,Tf | 175 | psec | 20%-80% | ||
| Tx Input Impedance | Zin | 50 | Ohm | Single ended | ||
| Rx Output Impedance | Zout | 50 | Ohm | Single ended | ||
For detail, please check the datasheet .
