Overview
Open Harmonized FPGA Modules (oHFM) is a combined approach for low to high-ranged FPGA Modules with solderable and connector-based embedded SoMs. The oHFM.c connector-based SoMs are design for high-speed (up to 112 Gbps PAM4 data rates), scalability, and easy upgrades.
oHFM.c Modules are versatile board-to-board form factors designed to support both FPGA-only implementations and CPU + FPGA integration. The SoMs feature four base form factors plus four additional extended variants. The extended variants provide an additional 20 mm in module length (10 mm at each end), offering increased PCB area for higher component density without requiring migration to a larger base size.
- Size-S - “Small”: 75 mm x 50 mm or extended size 95 mm x 50 mm
- Size-M - “Medium”: 75 mm x 70 mm or extended size 95 mm x 70 mm
- Size-L - “Large”: 75 mm x 90 mm or extended size 95 mm x 90 mm
- Size-XL - “Extra Large”: 75 mm x 120 mm or extended size 95 mm x 120 mm
oHFM™ Connectors
The oHFM.c Connectors are high performance 320-pin connectors. The connectors are mounted on the Module PCB Bottom side. The corresponding Carrier Card connectors are mounted on the Carrier PCB Top side.
The Module connector is a “receptacle”, or “female” connector.
- Size-S Modules will use two 320-pin, 0.96 / 1.5 / 0.96mm row and 0.635 mm column pitch receptacles labeled J1 and J2 (optional).
- Size-L Modules will add an additional 320-pin, 2.2 / 2.4 / 2.2 mm row and 0.635 mm column pitch receptacle labeled J3.
- Size-XL Modules will use an additional 320-pin, 2.2 / 2.4 / 2.2 mm row and 0.635 mm column pitch receptacle labeled J4.
The Carrier connector is a “plug” or “male” connector. The Carrier connectors are designated as P1, P2, P3, and P4.
- Size-S Module connector J1 mates with Carrier connector P1.
- Size-S Module connector J2 mates with Carrier connector P2.
- Size-L Module connector J3 mates with Carrier connector P3.
- Size-XL Module connector J4 mates with Carrier connector P4.
In all applications, the female Module Receptacles are employed at a standard height. The male Carrier Plugs vary to allow for either a 5 mm or 10 mm stack height.
Size-S Connectors (J1/P1, J2/P2) support data rates up to 64 Gbps PAM4. They are derived from the Samtec AcceleRate® HD Ultra-Dense, Slim Body Arrays.
Size-L Connectors (J3/P3) and Size-XL Connectors (J4/P4) support data rates up to 112 Gbps PAM4. They are derived from the Samtec AcceleRate® HP High Performance Arrays.
Connectors |
Options |
|||||
|---|---|---|---|---|---|---|
| Samtec PN | Module Receptacle | Carrier Plug | Stack Height | Termination | Weld Tabs | Plating |
| ASP-240412-01 | J1/J2 | Column | X | -L | ||
| ASP-240412-02 | J1/J2 | Column | X | -S | ||
| ASP-240413-01 | P1/P2 | 5 mm | Column | X | -L | |
| ASP-240413-02 | P1/P2 | 5 mm | Column | X | -S | |
| ASP-242870-01 | P1/P2 | 10 mm | Column | X | -L | |
| ASP-242870-02 | P1/P2 | 10 mm | Column | X | -S | |
| ASP-240410-01 | J3/J4 | Column | X | -L | ||
| ASP-240410-02 | J3/J4 | Column | X | -S | ||
| ASP-240411-01 | P3/P4 | 5 mm | Column | X | -L | |
| ASP-240411-02 | P3/P4 | 5 mm | Column | X | -S | |
| ASP-242868-01 | P3/P4 | 10 mm | Column | X | -L | |
| ASP-242868-02 | P3/P4 | 10 mm | Column | X | -S | |
