ASCENT’S SFP-AG-CO-04 10/100/1000 BASE-T Copper Small Form Pluggable (SFP) transceivers are based on the SFP Multi Source Agreement (MSA) . They are compatible with the Gigabit Ethernet standards as specified in IEEE Std 802.3. The 10/100/1000 BASE-T physical layer IC (PHY) can be accessed via I2C, allowing access to all PHY settings and features.
• Up to 1.25 Gb/s bi-directional data links
• Hot-pluggable SFP footprint
• Low power dissipation(1.05W typical)
• Compact RJ-45 connector assembly
• Fully metal enclosure, for lower EMI
• RoHS compliant and lead-free
• Single +3.3V power supply
• 10/100/1000 BASE-T operation in host systems with SGMII interface
• 1.25 Gigabit Ethernet over Cat 5 cable
3.3V Volt Electrical Power Interface
The SFP‑AG‑CO‑04 has an input voltage range of 3.3 V ± 5%. The 4V maximum voltage is not allowed for continuous operation.
Parameter | Symbol | Min | Typ | Max | Unit | Notes/Conditions |
Supply Current | Is | 320 | 375 | mA | 1.2W max power over full range of voltage and temperature. See caution note below | |
Input Voltage | Vcc | 3.13 | 3.3 | 3.47 | V | Referenced to GND |
Maximum Voltage | Vmax | 4 | V | |||
Surge Current | Isurge | 30 | mA | Hot plug above steady state current. See caution note below |
Caution: Power consumption and surge current are higher than the specified values in the SFP MSA
Low‑Speed Signals, Electronic Characteristics
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
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 |
All high‑speed signals are AC‑coupled internally.
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 | Ω | Differential, for all frequencies between 1MHz and 125MHz | ||
Rx Input Impedance | Zin,RX | 100 | Ω | 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 | Ω | Single‑ended | ||
Rx Output Impedance | Zout | 50 | Ω | Single‑ended |
General Specifications
Parameter | Symbol | Min | Typ | Max | Unit | Notes/Conditions |
Data Rate | BR | 10 | 1000 | Mb/sec | IEEE 802.3 compatible. See Notes 2 through 4 below | |
Cable Length | L | 100 | m | Category 5 UTP. BER <10‑12 |
Notes:
1. Clock tolerance is ± 50 ppm
2. By default, the SFP‑AG‑CO‑04 is a full duplex device in preferred master mode
3. Automatic crossover detection is enabled. External crossover cable is not required
4. 10/100/1000 BASE‑T operation requires the host system to have an SGMII interface with no clocks.
Parameter | Symbol | Min | Typ | Max | Unit | Notes/Conditions |
Case Operating Temperature | Tcase | 0 | 70 | °C | SFP‑AG‑CO‑04 | |
‑10 | 80 | °C | SFP‑AG‑CO‑04E | |||
‑40 | 85 | °C | SFP‑AG‑CO‑04A | |||
Storage Temperature | Tsto | ‑40 | 85 | °C | Ambient temperature |
Serial Communication Protocol Serial Bus Timing Requirements
SFP‑AG‑CO‑04 support the 2‑wire serial communication protocol outlined in the SFP MSA. It uses an Atmel AT24C02B 256 byte EEPROM with an address of A0h.
Parameter | Symbol | Min | Typ | Max | Unit | Notes/Conditions |
I2C Clock Rate | 0 | 100,000 | Hz |
2.5G SFP CWDM 40 km
2.5G SFP BiDi 10 km
2.5G SFP 1310nm 20km
2.5G SFP 1310 nm 2 km
1.25G SFP EZX 1550 nm 120 km
1.25G SFP ZX 1550 nm 80 km
1.25G SFP EX 1550 nm 40 km
1.25G SFP 1550 nm 160 km
1.25G SFP EX 1310 nm 40 km
1.25G SFP 1310 nm 20 km
1.25G SFP 1310 nm 10 km
1.25G SFP SR 850 nm 300 m
1.25G SFP BX 4950 120 km
1.25G SFP BX 4950 80 km
1.25G SFP BX 3150 40 km
1.25G SFP BX 3149 20 km
1.25G SFP CWDM 4931 40 km
1.25G SFP CWDM 4931 20 km
1000M Copper SFP
10/100/1000M Copper SFP
10/100/1000M Copper SFP w/ Auto-Negotiation
155M SFP 1550 nm 80 km
100M SFP BX 4931 20 km
155M SFP OC3 1310nm 15 km