C11.22 Counter Control Register 0
The TRCCNTCTLR0 characteristics are:
Purpose
Controls the counter.
Usage constraints
Accepts writes only when the trace unit is disabled.
Configurations
Available in all configurations.
Attributes
See C11.1 ETM register summary on page C11-733.
RES0 RES0RES0
31 16 15 14 12 11 8 7 6 4 3 0
RLDSEL CNTSEL
RLDSELF CNTTYPE
17
RLDTYPE
Figure C11-21 TRCCNTCTLR0 bit assignments
[31:17]
Reserved, RES0.
RLDSELF, [16]
Defines whether the counter reloads when it reaches zero:
0 The counter does not reload when it reaches zero. The counter only reloads based on
RLDTYPE and RLDSEL.
1 The counter reloads when it reaches zero and the resource selected by CNTTYPE and
CNTSEL is also active. The counter also reloads based on RLDTYPE and RLDSEL.
RLDTYPE, [15]
Selects the resource type for the reload:
0 Single selected resource.
1 Boolean combined resource pair.
[14:12]
Reserved, RES0.
RLDSEL, [11:8]
Selects the resource number, based on the value of RLDTYPE:
When RLDTYPE is 0, selects a single selected resource from 0-15 defined by bits[3:0].
When RLDTYPE is 1, selects a Boolean combined resource pair from 0-7 defined by bits[2:0].
CNTTYPE, [7]
Selects the resource type for the counter:
0 Single selected resource.
1 Boolean combined resource pair.
[6:4]
Reserved, RES0.
C11 ETM registers
C11.22 Counter Control Register 0
100236_0100_00_en Copyright © 2015–2017, 2019 Arm Limited or its affiliates. All rights
reserved.
C11-761
Non-Confidential
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