IBM PowerPC 405GP - Page 311

Status information includes error type and master read/write status. DCPO_ESRO field and
DCPO_PLBBEAR or DCPO_MEMBEAR lock status is also reported.
DETO
. FLO
DET1 FL1 DET2 FL2 DET3
FL3
RWO ALO RW1 AL1 RW2 AL2 RW3 AL3
Figure 14-8. Decompression Controller Error Status Register 0 (DCPO_ESR)
0:2 DETO Decompression Error Type for Master 0 Master 0 is the processor core instruction
000 Time-out during ITE fetch cache unit (ICU).
001 Time-out during block fetch
010 Memory controller error during ITE
fetch
011 Memory controller error during block
fetch
100-111 Reserved
3 RWO
ReadlWrite Status for Master °
This implementation only reports errors for
° Error operation was a write
compressed reads.
1 Error operation was a read
4
FLO DCPO_ESR Field Lock for Master 0
DCPO_ESR
register fields are locked when
° DCPO_ESR fields are unlocked
the PLB_lockErr signal was active in the
1
DCPO_ESR fields are locked
cycle in which the error occurred.
5
ALO
DCPO_MEMBEARlDCPO_PLBBEAR
DCPO_MEMBEAR and DCPO_PLBBEAR
Address Lock for Master
0 are locked to this master address when the
o Master has not locked PLB_lockErr signal was active in the cycle
DCPO_MEMBEAR and
in which the error occurred.
DCPO_PLBBEAR
1 Master has locked DCPO_MEMBEAR
and DCPO_PLBBEAR
6:8 DET1 Decompression Error Type for Master 1 See description for DCPO_ESR[DETO].
Master1 is the processor core data cache
unit (DCU).
9 RW1
ReadlWrite Status for Master 1 This implementation only reports errors for
o Error operation was a write compressed reads.
1 Error operation was a read
10 FL1
DCPO_ESR Field Lock for Master 1 DCPO_ESR register fields are locked when
o DCPO_ESR fields are unlocked
the PLB_lockErr signal was active in the
1
DCPO_ESR fields are locked
cycle in which the error occurred.
11 AL1
DCPO_MEMBEAR/DCPO_PLBBEAR DCPO_MEMBEAR and DCPO_PLBBEAR
Address Lock for Master 1 are locked to this master address when the
o Master has not locked PLB_lockErr signal was active in the cycle
DCPO_MEMBEAR and in which the error occurred.
DCPO_PLBBEAR
1 Master has locked
DCPO
MEMBEAR
-
and DCPO_PLBBEAR
14-8
PPC405GP User's Manual
Preliminary