ARM Architecture Reference Manual ARMv7-A and ARMv7-R edition

C10.9.8 c9, Event Type Select Register (PMXEVTYPER)
Debug Registers Reference
The Event Type Select Register, PMXEVTYPER, configures which event increments the current event
counter, PMNx, or to read the current configuration. PMSELR selects the current event counter, see c9,
Event Counter Selection Register (PMSELR) on page C10-113.
The PMXEVTYPER is:
a 32-bit read/write CP15 register
accessible in:
— privileged modes
— User mode only when the PMUSERENR.EN bit is set to 1
when the Security Extensions are implemented, a Common register
accessed using an MRC or MCR command with set to c9, set to 0, set to c13, and
set to 1.
The format of the PMXEVTYPER is:
31 8 7 0
Bits [31:8] Reserved, UNK/SBZP.
evtCount, bits [7:0]
Event to count. The Event number of the event that is counted by the current event counter,
PMNx. For more information, see Event numbers.
The contents of each of the Event Type Select Registers are UNKNOWN on a core logic reset.
Event numbers
Event numbers are used in the PMXEVTYPER to determine the event that causes an event counter to
increment. These event numbers are split into two ranges:
0x00-0x3F Common features. Reserved for the specified events. When an ARMv7 processor supports
monitoring of an event that is assigned a number in this range, if possible it must use that
number for the event. Unassigned values are reserved and might be used to define additional
common events in future editions of this manual.
0x40-0xFF IMPLEMENTATION DEFINED features.
Reserved, UNK/SBZP evtCount
For more information, including the assigned values in the common features range, see Event numbers on
page C9-13.
ARM DDI 0406B Copyright © 1996-1998, 2000, 2004-2008 ARM Limited. All rights reserved. C10-115