Fault Injection Data Register (FI_D) - Fault Injection Data Register (FI_D) - 4.0 English - PG112

LMB Block RAM Interface Controller LogiCORE IP Product Guide (PG112)
Document ID
PG112
Release Date
2025-11-20
Version
4.0 English

This register is used to inject errors in data written to the on-chip RAM and can be used to test the error correction and error signaling. The bits set in the register toggle the corresponding data bits of the subsequent data written to the on-chip RAM without affecting the ECC bits written. After the fault has been injected, the Fault Injection Data Register is cleared automatically.

The register is implemented if C_FAULT_INJECT is set to 1.

Note: Injecting faults should be performed in a critical region in software; that is, writing to this register and the subsequent write to the LMB block RAM must not be interrupted.
Table 1. Fault Injection Data Register (FI_D)
FI_D
C_LMB_DWIDTH-1 0
Table 2. Fault Injection Data Register Bit Definitions
Bit(s) Name Core Access Reset Value Description
C_LMB_DWIDTH-1:0 FI_D W 0 Bit positions set to 1 toggle the corresponding bits of the next data word written to the LMB block RAM. The register is automatically cleared after the fault has been injected. The register is 64 bits with 64-bit data width and 32 bits with 32-bit data width.