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
- Aligni Reference (username:public / password:syzygy)
- SYZYGY Specification
SYZYGY Information
Compatibility Table
| Compatibility Parameter | Specification |
|---|---|
| Port type | SYZYGY Transceiver |
| Width | Single |
| 5V supply required | No |
| Nominal 5V supply current | N/A |
| Nominal 3.3V supply current | 360 mA (based on 2x Finisar FTLF8524P2BNV modules) |
| VIO supply voltage | 3.3V |
| Nominal VIO supply current | < 100mA |
| Total number of I/O | 14 |
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 Parameter | Data |
|---|---|
| Max 5V Load | 0 mA |
| Max 3.3V Load | 2000 mA |
| Max VIO Load | 10 mA |
| IS_LVDS | False |
| IS_DOUBLEWIDE | False |
| VIO Min | 3.3V |
| VIO Max | 3.3V |
Pinout
| SYZYGY (J1) | Connection | Note |
|---|---|---|
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) | REFCLKP | 125 MHz LVDS clock  |
15 (REFCLKn) | REFCLKN | 125 MHz LVDS clock  |
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
| Component | Manufacturer | Manufacturer P/N |
|---|---|---|
| Dual SFP Cage | Amphenol | U77-A2114-200T |
| SFP Receptacle | Amphenol | UE75-A20-6000T |
Tested SFP Modules
| Manufacturer | Manufacturer P/N | Comment |
|---|---|---|
| Finisar | FTLF8524P2BNV | 4.25 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)
Overview
Content Tools
ThemeBuilder