Visible to Intel only — GUID: sxz1679290074695
Ixiasoft
Visible to Intel only — GUID: sxz1679290074695
Ixiasoft
15.5.2.9.1. Error Probes
Error probes detect packets in error and forward them to the associated observer via the observation network. The error loggers, located in the observer, record the error packets. You can program an error logger to assert an output signal when an error packet is received. You can use the signal as a system interrupt.
NoC units can generate errors in particular circumstances:
- Generic initiator NIUs, when decoding addresses or applying security criteria.
- Security firewalls, when detecting illegal packets.
- Generic or specific target NIUs that are incapable of processing a particular initiator transaction.
- Target system itself, which can return error responses to transactions
In the default's unified error type mode, a single Boolean status bit ERR marks packets in error.
In the differentiated error codes, the packets also carry an error code qualifier that identifies the error type.
Code | Value | Source | Type |
---|---|---|---|
SLV | 0 | Target | Target error detected by receiver |
DEC | 1 | Initiator NIU | Address decode error |
UNS | 2 | Target NIU | Unsupported request |
DISC | 3 | Power disconnect | Disconnected target or domain |
SEC | 4 | Initiator NIU or firewall | Security violation |
HIDE | 5 | Firewall | Hidden security violation, reported as OK to initiator |
TMO | 6 | Target NIU | Time-out |
RSV | 7 | None | Reserved |