Intel C2550 FH8065401488912 Data Sheet

Intel

®

 Atom™ Processor C2000 Product Family for Microserver

Datasheet, Vol. 2 of 3

September 2014

96

Order Number: 330061-002US

1. Upon a detection of a local error, the corresponding local error status is set if the 

error is unmasked; otherwise, the error bit is not set and the error is not 

propagated.

2. The local uncorrectable error is mapped to its associated error severity defined by 

3. The local FERR and NERR logging events are forwarded to the global FERR and 

4. A correctable error is logged in the global correctable FERR/NERR registers, a 

5. The Global Error register reports the error with its associated error severity to the 

System Event Status register. The system event status is set if the system event 

reporting is unmasked for the error severity; otherwise, the bit is not set and the 

error is not reported.

6. Setting the system event bit triggers a system event generation according the 

mapping defined in the System Event Map register. The associated system event is 

generated for the error severity and dispatched to the CPU/BMC of the error 

(interrupt for the CPU or error pin for the BMC).

7. The Global Log and Local Log registers provide the information to identify the 

source of the error. The software reads the log registers and clears the global and 

local error status bits.

8. Since the error status bits are edge triggered, a 0-to-1 transition is required to set 

the bit again. While the error status bit (local, global, or system event) is set to 1, 

all incoming error reporting to the respective error status register is ignored (no 

0-to-1 transition).
a. When a write to clear the local error status bit is done, the local error register 

re-evaluates the logical OR output of its error bits and reports it to the Global 

Error register; however, if the global error bit is already set, then the report is 

ignored.

b. When a write to clear the error status bit is done, the Global Error register 

re-evaluates the logical OR output of its error bits and reports it to the System 

Event Status register; however, if the system event status bit is already set, then 

the report is not generated.

c. The software optionally masks or unmasks the system event generation 

(interrupt or error pin) for an error severity in the System Event Control register 

while clearing the Local and Global Error registers.