MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor
25-75
25.14.2.2 Watchpoint Trigger Register (WT)
The watchpoint trigger register allows the watchpoints defined internally to the NXDM module to trigger
actions. These watchpoints can control data trace enable and disable. The WT bits can be used to produce
an address related window for triggering trace messages.
Table 25-47. DC2 Field Description
Bit
Name
Description
31–24
EWC
1
1
The EOC bits in DC1 must be programmed to trigger EVTO on watchpoint occurrence for the EWC bits to
have any effect.
EVTO Watchpoint Configuration
00000000 = No watchpoints trigger EVTO
1XXXXXXX = Reserved
X1XXXXXX = Reserved
XX1XXXXX = Reserved
XXX1XXXX = Reserved
XXXX1XXX = Internal watchpoint #1 triggers EVTO
XXXXX1XX = Internal watchpoint #2 triggers EVTO
XXXXXX1X = Reserved
XXXXXXX1 = Reserved
23–0
–
Reserved, read as 0.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
0
0
0
0
0
0
DTS
DTE
0
0
0
0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 25-55. Watchpoint Trigger Register (WT)
Table 25-48. WT Field Description
Bit
Name
Description
31–26
–
Reserved, read as 0.
25–23
DTS
DTS - Data trace start control
000 Trigger disabled
001-100 Reserved
101 Use internal watchpoint #1 (BWA1 register)
110 Use internal watchpoint #2 (BWA2 register)
111 Reserved
Summary of Contents for MPC5553
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