1. Maximum total power value is specified across the full temperature and voltage range.
2. After internal AC coupling.
3. Or open circuit.
4. Into 100 ohms differential termination.
5. These are unfiltered 20-80% values
6. Loss of Signal is open collector to be pulled up with a 4.7k – 10kohm resistor to 3.15 – 3.6V. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
7. Per Section 2.7.1. in the XFP MSA Specification¹.

Optical Characteristics (T_OP = -5 to 70 °C, V_CC3 = 3.13 to 3.45 Volts)

Notes:

Measured with worst ER; BER<10^-12@ 10.3Gbps, 2³¹ – 1 PRBS.

General Specifications

Digital Diagnostic Functions

As defined by the XFP MSA¹, The XFP transceivers provide digital diagnostic functions via a 2-wire serial interface, which allows real-time access to the following operating parameters:

1. Transceiver temperature
2. Laser bias current
3. Transmitted optical power
4. Received optical power
5. Transceiver supply voltage

It also provides a sophisticated system of alarm and warning flags, which may be used to alert end-users when particular operating parameters are outside of a factory-set normal range.

The operating and diagnostics information is monitored and reported by a Digital Diagnostics Transceiver Controller (DDTC) inside the transceiver, which is accessed through the 2-wire serial interface. When the serial protocol is activated, the serial clock signal (SCL pin) is generated by the host. The positive edge clocks data into the XFP transceiver into those segments of its memory map that are not write-protected. The negative edge clocks data from the XFP transceiver. The serial data signal (SDA pin) is bi-directional for serial data transfer. The host uses SDA in conjunction with SCL to mark the start and end of serial protocol activation. The memories are organized as a series of 8-bit data words that can be addressed individually or sequentially. The 2-wire serial interface provides sequential or random access to the 8 bit parameters, addressed from 000h to the maximum address of the memory.

Mechanical Specifications

TAKFLY XFP transceivers are compliant with the dimensions defined by the XFP Multi-Sourcing Agreement (MSA).

XFP Transceiver (dimensions are in mm)

PCB Layout and Bezel Recommendations

XFP Host Board Mechanical Layout (dimensions are in mm)

XFP Detail Host Board Mechanical Layout (dimensions are in mm)

Regulatory Compliance