we are using in our board the device CYCLONE 5 - 5CSEBA5U23,
when we are trying to power up the device in temperature under zero( -5 cel),
we are getting the " altera_load" failed with error code -2" and the "conf_done" stays low.
If the board is power up in a positive temperature , and we are cooling the board, the device working fine.
We check all signals control , the are setting ok.
Have you follow our userguide when configuring and power up the FPGA?
We designed our board according to Intel's recommendation.
The device works great in all temperatures, but when we trying to turn it on at temperatures below zero
we are getting the " altera_load" failed with error code -2".
Is there anything we can try to resolve this ?
Apologize for the delay in response.
Can you check:
- Power up status such as
- power rails all power up correctly
- Measure the voltage during the power up
- Also, different component on the board can also effect the power up
- And, is there any changes when power up between those 10 devices? Are the 10 devices using the same board or different board?
-We check all power rails there is no change when power up below 0cel.
-We measure the voltage during the power up, the are setting ok.
-The signal "conf_done" stays low.
-There are no different components between the boards, the 10 devices using the same board.