User`s guide

A.1.2 Error and Diagnostic Status Register
The error and diagnostic register is shown in Figure A–2 and is defined in
Table A–2. The register contains read-only status information for diagnostics
and error analysis. The occurrence of an error sets one or more error bits
(BC_TAPERR, BC_TCPERR, NXMERR) and locks the address of the error.
After the address is locked, any additional error will set LOSTERR and
will not affect the address or other error bits (BC_TAPERR, BC_TCPERR,
NXMERR). Clearing all of the error bits (not the LOSTERR bit) unlocks the
address.
Figure A–2 Error and Diagnostic Status Register
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
LJ-04179.AI
WRPEND
LDXLLOCK
PASS 2
MBZ
CREQCAUSE
VICCAUSE
DMACAUSE
NXMERR
BC_TCPERR
BC_TAPERR
LOSTERR
Table A–2 Error and Diagnostic Status Register
Field Name Type Description
<15> WRPEND RO, O Write pending. When set, indicates that valid write
data is stored in the write buffer.
<14> LDXLLOCK — LDx_L locked. When set, indicates that the lock
bit for LDx_L is set and that the next STx_C may
succeed. Writing to any CSR or I/O space location
clears this lock bit.
(continued on next page)
A–4 System Register Descriptions