Comparator Fault Inject Register (CFIR) - 1.0 English - PG268

MicroBlaze Triple Modular Redundancy (TMR) Subsystem LogiCORE IP Product Guide (PG268)
Document ID
PG268
Release Date
2025-12-09
Version
1.0 English

This register is used to control comparator fault injection. The register definition is shown in the following table and described in Table 2 . The register is write-only. Issuing a read request generates the read acknowledgment with zero data. The register is only implemented if C_TEST_COMPARATOR is set to 2.

Table 1. Comparator Fault Inject Register (CFIR)
  IVE IE23 IE13 IE12
31 4 3 2 1 0
Table 2. Comparator Fault Inject Register Bit Definitions
Bits Name Access Reset Value Description
31-4 Reserved N/A 0 Reserved
3 Inject Voter Error W 0

Inject a comparison error in the voter checker:

0 = No error.

1 = An error is injected.
2 Inject Error 2-3 W 0

Inject a comparison error between processor 2 and 3:

0 = No error.

1 = An error is injected.
1 Inject Error 1-3 W 0

Inject a comparison error between processor 1 and 3:

0 = No error.

1 = An error is injected.
0 Inject Error 1-2 W 0

Inject a comparison error between processor 1 and 2:

0 = No error.

1 = An error is injected.