Datasheet

Intel
®
E8870 Scalable Node Controller (SNC) Datasheet 3-35
Configuration Registers
Processor Bus Errors (Continued)
85 RCS 0 Unc
F8:BERR# Observed
Set when the signal is asserted but not driven by the SNC.
84 RCS 0 Unc
F9:Partial Merge Multi-Bit ECC error on IWB
A multi-bit error was detected when merging a partial memory write
with the rest of the line supplied by IWB. The write must be less than
8 bytes and the error must have been in that 8-byte boundary. The
error may have been in the initiator supplied data or the IWB. ECC
checking, correction and/or poisoning is done within the 8-byte
boundary of the partial write.
83 RCS 0 Corr
F10:Outbound Single-Bit ECC Error
Error in data from processor bus.
82 RV 0 Corr Reserved
81 RCS 0 Corr
F12:Illegal Outbound Address
MIR miss when SPBS=1, SPS not connected.
80 RCS 0 Corr
F13:Partial Merge Single-Bit ECC Error on IWB
A single-bit error was detected when merging a partial memory write
with the rest of the line supplied by IWB. The write must be less than
8 bytes and the error must have been in that 8-byte boundary. The
error may have been in the initiator supplied data or the IWB. ECC
checking, correction and/or poisoning is done within the 8B boundary
of the partial write.
LPC Errors
79 RCS 0 Fatal
L1: LPC SYNC
LPD slave device indicates error of sync/response handshake in error.
78 RCS 0 Corr
L2: LPC Time-out
Set if no LPC/FWH device drives a valid SYNC after four consecutive
clocks.
Memory Errors
77:40 RV 0 N/A Reserved
39 RCS 0 Unc
M1: Multi-Bit Memory ECC Error on Write
The SNC has poisoned the 32-byte memory ECC codeword that
contains the error and written the data to memory. See Section 5.2,
“Error Correction.”
38 RCS 0 Unc
M2: Uncorrectable Memory ECC Error on Read
For confirmed memory reads, the SNC has returned data with
poisoned SEC/DED ECC to the processor bus or SP. All four of the
8-byte SEC/DED codewords that came from the Memory ECC
codeword in error will be poisoned. For this reason, both FERRST
and SERRST register bits will be set in any component that detects
the poisoned SEC/DED codewords.
If the memory read was speculative, and never confirmed, the data
will have been discarded and no other errors indicated.
If the memory read is part of the read-modify write for a partial write,
the 32-byte memory ECC codeword that contains the error is
poisoned when the data is written to memory. Section 5.2, “Error
Correction.”
Device: NodeID
Function: 2
Offset: 80h(31:0), 84h(63:32), 88h(96:64) (Continued)
Bit Attr Default
ERR
Type
Description