1. About the Nios® V Processor Lockstep
2. Overview
3. Controlling the Nios® V Processor Lockstep
4. Programming Model
5. Signals, Interfaces, and Build Parameters
6. Using Nios® V Processor Lock Step
A. Document Revision History for the Nios® V Processor: Lockstep Implementation User Guide
B. Appendix
4.4.1. CPUs’ Reset Control Register - DCLSM_CPURC
4.4.2. DCLSM Basic Control Register - DCLSM_CTRL
4.4.3. DCLSM Blind Window Control Register - DCLSM_BWCR
4.4.4. All Alarms’ Prior Alarms’ Fault Injection Register - ERRCTRL_ALL_ALARMS_PRIOR_AFI
4.4.5. INTREQ Configuration Register - ERRCTRL_INTREQ_CONF
4.4.6. Timeout Deadline and Status Register - ERRCTRL_TIMEOUT
4.4.7. Timeout Acknowledgment Register - ERRCTRL_TIMEOUT_ACK
4.4.8. Enable Key fRSmartComp Control Register - ERRCTRL_ENABLE_KEY
4.4.9. Root Fault Injection Control register - ERRCTRL_ROOT_INJ
4.4.10. Alarm Fault Injection Control register - ERRCTRL_ALARM_INJ
4.4.11. Event Mask Configuration register - ERRCTRL_MASKA and ERRCTRL_MASKB
4.4.12. Alarm Routing Configuration register - ERRCTRL_ROUTA and ERRCTRL_ROUTB
4.4.13. Error Controller PGO LOG Reset Control register - ERRCTRL_PGOLOGRST
4.4.14. PGO0 and PGO4 Configuration registers - ERRCTRL_PGO0 and ERRCTRL_PGO4
4.4.15. FN_MODEIN Control Register - ERRCTRL_FNMODEIN
4.4.16. FN_MODEOUT register - ERRCTRL_FNMODEOUT
4.4.17. All Alarms After Fault Injection - ERRCTRL_FNGIALARMS
4.4.18. Error Controller Context Register - ERRCTRL_FNGICTXT4
4.4.19. CMP Mismatch CONTEXT Registers - ERRCTRL_FNGICMPCTXT0 … ERRCTRL_FNGICMPCTXT3
4.4.20. STATISTICS registers: ERRCTRL_FNGISTAT0 and ERRCTRL_FNGISTAT4
4.4.21. State register - ERRCTRL_FNPERIPHGI4
2.2.3.2. Timeout Timer
You can use timeout timers to detect any faulty behavior of the external units that incorrectly interact with the fRSmartComp (for example, the System Supervisor has not accessed the fRSmartComp for a long period of time).
After asynchronous reset and during any fRSmartComp state change, a single timer counter starts with the configured deadline value in the IP Parameter Editor. You can configure these values during application runtime. If the timer expires without receiving a timeout acknowledgment, it generates a timeout alarm (ALARM16).
To set the timeout deadline value, you use the approach in the following table.
Approach | Actions |
---|---|
IP Parameter Editor (during project development) | Defines the default timeout deadline in the Default Timeout Period option. |
Configuration Interface (during runtime) |
|
To acknowledge the timeout, use the approach in the following table.
Approach | Actions |
---|---|
Configuration Interface (during runtime) |
|
Figure 10. Timeout Timer