wiki:HardwareUsersGuides/FMC-RF-2X245/MGTs

Version 1 (modified by murphpo, 11 years ago) (diff)

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WORK IN PROGRESS - DON'T TRUST THIS DOCUMENTATION JUST YET...

FMC-RF-2X245 User Guide: MGT Interfaces

The FMC standard dedicates pins for 10 multi-gigabit transceivers (MGTs), labeled DP[0:9] in the standard. The Mango FMC-RF-2X245 module connects 4 transceivers to SATA connectors.

Important: the FMC-RF-2X245 module MGT interfaces are not intended for connections to SATA devices (like hard drives). While it may be possible to implement a standard SATA host in the FPGA and connect it to an SATA target via the FMC-RF-2X245 module, this is not something we have tested. These interfaces are intended for connections between FPGA kits, each equipped with FMC-RF-2X245 modules.

Connectors

The FMC-RF-2X245 module has four SATA connectors. Each connector is tied to a single 4 data signals on the FMC header (Tx +/-, Rx +/-).

Two of the SATA connectors are wired as hosts; the other two are wired as targets. This allows two FMC-RF-2X245 modules to be connected via a standard (non-crossover) SATA cable.

All Tx and Rx data lines for all 4 connectors are AC-coupled on the FMC-RF-2X245 module with 0.1µF capacitors.

Connector Pinout FMC DP WARP v3 GTX
J3 Host DP4 115.2
J8 Target DP5 115.0
J7 Target DP6 115.1
J1 Host DP7 115.3

Clocking