Page tree

Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

The DUALSFP peripheral provides a pair of SFP+ sockets to a SYZYGY Transceiver port for use with high-performance serial standards over optical or copper wire connections.

 

Resources

SYZYGY Information

Compatibility Table

Compatibility ParameterSpecification
Port typeSYZYGY Transceiver
WidthSingle
5V supply requiredNo
Nominal 5V supply currentN/A
Nominal 3.3V supply current360 mA (based on 2x Finisar FTLF8524P2BNV modules)
VIO supply voltage3.3V
Nominal VIO supply current< 100mA
Total number of I/O14

DNA Data

This data is stored in the SYZYGY DNA microcontroller on the SZG-DUALSFP peripheral.

Note that the maximum 3.3V load below is an overestimate due to the variability in power consumption between SFP modules.

DNA ParameterData
Max 5V Load0 mA
Max 3.3V Load2000 mA
Max VIO Load10 mA
IS_LVDSFalse
IS_DOUBLEWIDEFalse
VIO Min3.3V
VIO Max3.3V

Pinout

SYZYGY (J1)ConnectionNote
5 (RX0p)SFP1_RDP 
7 (RX0n)SFP1_RDN 
6 (TX0p)SFP1_TDP 
8 (TX0n)SFP1_TDN 
9 (RX1p)SFP2_RDP 
11 (RX1n)SFP2_RDN 
10 (TX1p)SFP2_TDP 
12 (TX1n)SFP2_TDN 
13 (REFCLKp)REFCLKP125 MHz LVDS clock (plus)
15 (REFCLKn)REFCLKN125 MHz LVDS clock (minus)
14 (S0)SFP1_MOD_DEF2 
16 (S1)SFP1_RATE_SELECT 
17 (S2)SFP1_TFAULT 
18 (S3)SFP2_TDIS 
19 (S4)SFP1_TDIS 
20 (S5)SFP2_MOD_DEF2 
21 (S6)SFP1_MOD_DEF1 
22 (S7)SFP2_MOD_DEF1 
23 (S8)SFP1_MOD_DEF0 
24 (S9)SFP2_MOD_DEF0 
25 (S10)SFP1_LOS 
26 (S11)SFP2_RATE_SELECT 
27 (S12)SFP2_TFAULT 
28 (S13)SFP2_LOS 

Design

The DUALSFP peripheral provides a pair of SFP+ sockets to a SYZYGY Transceiver port for use with high-performance serial standards over optical or copper wire connections.

Primary Components

ComponentManufacturerManufacturer P/N
Dual SFP CageAmphenolU77-A2114-200T
SFP ReceptacleAmphenolUE75-A20-6000T

Tested SFP Modules

ManufacturerManufacturer P/NComment
FinisarFTLF8524P2BNV4.25 Gb/s Short-Wavelength SFP Transceiver

Eye Diagrams

Several eye diagrams were taken using Xilinx's iBERT tool to empirically test the quality of the link.

Test conditions and setup:

  • Vivado 2017.2
  • iBERT version 3.0 (Rev. 15)
  • Brain-1 used as the carrier
  • Peripheral contained two Finisar FTL8524P2BNV SFP transceivers
  • Scans performed at 3.75Gbps

Scan 0 (SFP1 Position - Direct SYZYGY)

Scan 1 (SFP2 Position - Direct SYZYGY)