Visible to Intel only — GUID: svp1674707046690
Ixiasoft
Visible to Intel only — GUID: svp1674707046690
Ixiasoft
12.1.1. HPS_COLD_nRESET Pin Function
You can assign HPS_COLD_nRESET to an available SDM I/O pin. This pin serves both as an input to reset the HPS and as an output to the external system, but it does not indicate that the HPS is in reset. Do not connect HPS_COLD_nRESET to the external flash. The SDM controls the reset of the external flash separately. You can configure this pin using the Quartus® Prime Pro Edition, under Device and Pin options > Configuration > Configuration pin option.
The following table describes how the HPS_COLD_nRESET pin behaves during various stages of boot and configuration.
HPS_COLD_nRESET pin behavior | |||||||
---|---|---|---|---|---|---|---|
During USER MODE | HPS Cold Reset Trigger has occurred | Back in USER MODE | |||||
During HPS Reset | After HPS Reset | After HPS BOOT | |||||
HPS Cold Reset Trigger | Pin | (input) HIGH, user triggers LOW 24 | (input) user controlled | (output) HIGH | (output) HIGH | (input) HIGH | |
HPS (Mailbox Command or Watchdog Timeout) 25 |
(input) HIGH, Watchdog Timeout or user sends mailbox command | (output) HIGH | (output) HIGH | (output) HIGH | (input) HIGH | ||
nCONFIG | (input) HIGH, user triggers nCONFIG | (output) HIGH | (output) HIGH | (output) HIGH | (input) HIGH |