Ascent Communication Technology

10/100/1000M Copper SFP w/ Auto-Negotiation

ASCENT’S SFP-AG-CO-03 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 and 1000BASE-T 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 SERDES interface

• 1.25 Gigabit Ethernet over Cat 5 cable

+3.3V Volt Electrical Power Interface

The SFP‑AG‑CO‑03 has an input voltage range of 3.3 V ± 5%. The 4 V 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

High‑Speed Electrical Interface, Transmission Line‑SFP

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	T_r,T_f		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

1000

Mb/sec

IEEE 802.3 compatible.

See Notes 2 through 4 below

Cable Length

100

Category 5 UTP.

Notes:

1. Clock tolerance is ± 50 ppm

2. By default, the SFP‑AG‑CO‑03 is a full duplex device in preferred master mode

3. Automatic crossover detection is enabled. External crossover cable is not required

4. SFP‑AG‑CO‑03 does not support SGMII .With a SERDES the module will operate at 10/100/1000 BASE‑T

Environmental Specifications

Parameter	Symbol	Min	Typ	Max	Unit	Notes/Conditions
Case Operating Temperature	Tcase	0		70	°C	SFP‑AG‑CO‑03
		‑10		80	°C	SFP‑AG‑CO‑03E
		‑40		85	°C	SFP‑AG‑CO‑03A
Storage Temperature	Tsto	‑40		85	°C	Ambient temperature

Serial Communication Protocol Bus Timing Requirements

SFP‑AG‑CO‑03 support the 2‑wire serial communication protocol outlined in the SFP MSA. It uses use an Atmel AT24C02B 256 byte EEPROM with an address of A0h.