Built-in shutdown logic protects the card from damage by removing power to the FPGA when either electrical or thermal limits (given in the following table) reach or exceed their respective card shutdown thresholds. VCCINT current and temperature are monitored by the card regulator while FPGA temperature is monitored by the satellite controller (SC). Power to the card SC remains on during card shutdown. Card shutdown protection logic is always enabled and cannot be disabled.
Note: When card shutdown occurs, the card is pulled
off the PCIe bus and consequently is not seen by
the host. No AXI firewall trip is issued. A cold reboot of the server is required to
recover.
The following table lists the card shutdown power and thermal thresholds.
| Sensor Description | Card Shutdown Threshold | |
|---|---|---|
| PCIe AUX Power Not Connected | PCIe AUX Power Connected | |
| VCCINT Current | 60A (One phase at 60A per phase) | 180A (Three phases at 60A per phase) |
| VCCINT Temperature | 125°C | |
| FPGA Temperature | 107°C | |