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Intel
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
September 2006 DM
Order Number: 252480-006US 137
Intel XScale
®
Processor—Intel
®
IXP42X product line and IXC1100 control plane processors
3.7.2.6 Event Select Register
(EVTSEL)
EVTSEL is used to select events for PMN0, PMN1, PMN2 and PMN3. Refer to Table 60,
“Performance Monitoring Events” on page 139 for a list of possible events.
Table 58. Overflow Flag Status Register
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
P
3
P
2
P
1
P
0
C
reset value: [4:0] = 0b00000, others unpredictable
Bits Access Description
31:5 Read-unpredictable / Write-as-0 Reserved
4Read / Write
PMN3 Overflow Flag (P3) -
Read Values:
0 = no overflow
1 = overflow has occurred
Write Values:
0 = no change
1 = clear this bit
3Read / Write
PMN2 Overflow Flag (P2) -
Read Values:
0 = no overflow
1 = overflow has occurred
Write Values:
0 = no change
1 = clear this bit
2Read / Write
PMN1 Overflow Flag (P1) -
Read Values:
0 = no overflow
1 = overflow has occurred
Write Values:
0 = no change
1 = clear this bit
1Read / Write
PMN0 Overflow Flag (P0) -
Read Values:
0 = no overflow
1 = overflow has occurred
Write Values:
0 = no change
1 = clear this bit
0Read / Write
CCNT Overflow Flag (C) -
Read Values:
0 = no overflow
1 = overflow has occurred
Write Values:
0 = no change
1 = clear this bit