This is a product specification document for altera's high speed mezzanine card.
The Altera High Speed Mezzanine Card (HSMC) specification defines the electrical and mechanical properties of a high speed mezzanine card adapter interface for FPGA-based motherboards. This specification allows for the design of interoperable motherboards and add-on cards by different manufacturers that can utilize high-performance I/O features found in today's FPGA devices.
| Connector Total Pins | 172 pins |
|---|---|
| Signal Pins Count | 121 signal pins |
| Power Pins Count | 39 power pins |
| Ground Pins Count | 12 ground pins |
| Connector Pitch | 0.5 mm pitch |
| Default Stacking Height | 5 mm |
To allow for multi-gigahertz differential signaling as well as slower single-ended signaling on most pins.
The host board provides +12 V DC and +3.3 V DC power to the mezzanine card.
Mezzanine cards use the ASP-122952-01 header.