4.4.1 Fault Summary
The Fault Summary block contains the fault ID, fault flags describing the nature
of the fault, the cross-link mode at the time the fault occurred, and the cross-link
mode after the error handling was completed. All fields in this block are valid for
all error entries. Figure 4–4 identifies each entry in the block and the offset from
the start of the block. Table 4–15 describes the content of each field.
Note
The 1-byte FAULT_ID field is composed of two 4-bit subfields. Bits [07:04]
indicate the class of the fault. Bits [03:00] identify the error type within
the fault class. There are six fault classes. Each class has a different fault
data block at the end of the error log. See Section 4.4.5 for a description
of each fault class and the fault data provided in the error log.
Figure 4–4 Fault Summary Block
XLINK_MODE_ERROR
(Crosslink Mode Error)
FAULT_FLAGS
FAULT_ID
(Fault Flags)
(Fault Identification)
XLINK_MODE_AFTER
(Crosslink Mode After)
MR−0009−93RAGS
Table 4–15 Fault Summary Block Entry Descriptions
Entry
Contents
FAULT_ID
Fault Identification type. The hexidecimal ID values are defined
as:
10 - CPU-detected double-bit error
11 - JXD-detected double-bit error
12 - Cable gone between zones
13 - Power gone in other zone
14 - Clock error
15 - Other zone halted
16 - Resynch abort error
17 - CPU-detected single-bit error
18 - JXD-detected single-bit error
19 - CPU/MEM fault
1A - Nonexistent I/O
1B - I/O miscompare error
1C - Zones divergence
20 - CPU-detected DBE end action
21 - JXD-detected double-bit error end action
22 - Cable gone end action (reserved for future use)
(continued on next page)
4–20 Error Handling and Analysis