Table 11-17 Settings For Dwt Function Registers; Figure 11-12 Dwt Function Registers 0-3 Bit Assignments; Table 11-16 Bit Functions Of Dwt Function Registers 0-3 - ARM Cortex-M3 Technical Reference Manual

System Debug
Field Name
[31:8] -
[7] CYCMATCH
[6] -
[5] EMITRANGE
[4] -
[3:0] FUNCTION
11-24
Table 11-16 describes the fields of DWT Function Registers 0-3.
Definition
Reserved
Only available in comparator 0. When set, this comparator compares against the PC Sampler
Counter.
Reserved
Emit range field. Reserved to permit emitting offset when range match occurs. Reset clears the
EMITRANGE bit. PC sampling is not supported when EMITRANGE is enabled.
EMITRANGE only applies for:
FUNCTION=b0001, b0010, and b0011.
Reserved
See Table 11-17 on page 11-24 for FUNCTION settings.
Value Function
b0000 Disabled
b0001 EMITRANGE=0, sample and emit PC through ITM
EMITRANGE=1, emit address offset through ITM
b0010 EMITRANGE=0, emit data through ITM on read and write.
EMITRANGE=1, emit data and address offset through ITM on read or write.
b0011 EMITRANGE=0, sample PC and data value through ITM on read or write.
EMITRANGE=1, emit address offset and data value through ITM on read or write.
b0100 Watchpoint on PC match.
Copyright © 2005, 2006 ARM Limited. All rights reserved.

Figure 11-12 DWT Function Registers 0-3 bit assignments

Table 11-16 Bit functions of DWT Function Registers 0-3

Table 11-17 Settings for DWT Function Registers

ARM DDI 0337B