POST_CRC_INIT_FLAG - 2023.2 English

Vivado Design Suite Properties Reference Guide (UG912)

Document ID
Release Date
2023.2 English

The Post CRC INIT Flag property (POST_CRC_INIT_FLAG) determines whether the INIT_B pin is enabled as an output for the SEU (Single Event Upset) error signal. This feature is only supported in 7 series FPGAs. For more information refer to the 7 Series FPGAs Configuration User Guide (UG470).

Tip: Alternatively, AMD recommends use of the AMD Soft Error Mitigation (SEM) IP for all architectures. This IP automates the implementation of single event upset (SEU) detection and correction. For additional information, refer to the Soft Error Mitigation Controller LogiCORE IP Product Guide (PG036).

The error condition is always available from the FRAME_ECC site. However, when the POST_CRC_INIT_FLAG is ENABLED, which is the default, the INIT_B pin also flags the CRC error condition when it occurs.

This property is only applicable when POST_CRC is set to ENABLE.

Architecture Support
7 series FPGAs.
Applicable Objects
Design (current_design): The current implemented design.
  • DISABLE: Disables the use of the INIT_B pin, with the FRAME_ECC site as the sole source of the CRC error signal.
  • ENABLE: Leaves the INIT_B pin enabled as a source of the CRC error signal (default).


Verilog Syntax

Not applicable

VHDL Syntax

Not applicable

XDC Syntax
set_property POST_CRC_INIT_FLAG ENABLE | DISABLE [curent_design]

XDC Syntax Example:

set_property POST_CRC_INIT_FLAG Enable [current_design]

Affected Steps

  • Write Bitstream
  • launch_runs