Specifications

5.1 Connectors
The evaluation board is pre-configured for use with any SFP+ transceiver. The shorting jumpers are
pre-installed. Many of the jumpers have 0 Ω resistors installed in parallel. The complimentary inputs
of each data channel are common SMA jacks. An I
2
C connector jack is installed for optional 2-wire
serial communications with the SFP+ module.
5.1.1 J1: 4-Pin Connector for 2-Wire Serial Interface (I
2
C)
The I
2
C or MOD_DEF 2-wire serial interface is optional and is only required if it is desired to view the
Serial ID information or to access the digital diagnostics. JDSU offers a GUI that requires a particular
serial to I
2
C converter to interface with the module under test. JDSU’s GUI requires a MCC (Micro
Computer Control, www.mcc-us.com) RS-232 to I
2
C adapter model MIIC-203. Connection to the
evaluation board as described below requires simple modification of the cable supplied with the serial-to-
I
2
C adapter. The pull-up on the MMIC module can be set to either the “ON” or “OFF” position.
• Pin 1 = GND (LED D5), is grounded by the module to indicate that the module is present. This
pin is called MOD-ABS in SFF 8431. (aka MOD-DEF0)
• Pin 2 = SDA (LED D3) is the data line of the serial interface. (aka MOD-DEF2)
• Pin 3 = +5V
• Pin 4 = SCL (LED D4) is the clock line of the serial interface. (aka MOD-DEF1)
5.1.2 J2: Power Connector
•VCCT; 4-Pin connector for TX Power Supply (3.3 V) labeled “VT+” (LED D11)
- Sense terminals are labeled VTS+ and VT-
•VCCR; 4-Pin connector for RX Power Supply (3.3 V) labeled “VR+” (LED D10)
- Sense terminals are labeled VR+ and VR-.
5.1.3 J3: SFP+ Cage
JDSU offers a line of SFP+ cages with enhanced EMI performance for use at high frequencies. These
cages are shown in Table 1 on next page. This board takes a single solder-down or press-fit cage. 1x2
and 1x4 cages are shown for completeness.
5
Application Note: SFP+ Evaluation Board