MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor
25-39
25.11.6 Watchpoint Trigger Register (WT)
The watchpoint trigger register allows the watchpoints defined within the e200z6 Nexus1 logic to trigger
actions. These watchpoints can control program and/or data trace enable and disable. The WT bits can be
used to produce an address related ‘window’ for triggering trace messages.
details the watchpoint trigger register fields.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
PTS
PTE
DTS
DTE
0
0
0
0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Nexus Reg
0xB
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
Nexus Reg
0xB
Figure 25-19. Watchpoint Trigger Register (WT)
Table 25-30. WT Field Descriptions
Bits
Name
Description
31–29
PTS
[2:0]
Program trace start control.
000 Trigger disabled
001 Use watchpoint #0 (IAC1 from Nexus1)
010 Use watchpoint #1 (IAC2 from Nexus1)
011 Use watchpoint #2 (IAC3 from Nexus1)
100 Use watchpoint #3 (IAC4 from Nexus1)
101 Use watchpoint #4 (DAC1 from Nexus1)
110 Use watchpoint #5 (DAC2 from Nexus1)
111 Use watchpoint #6 or #7 (DCNT1 or DCNT2 from Nexus1)
28–26
PTE
[2:0]
Program trace end control.
000 Trigger disabled
001 Use watchpoint #0 (IAC1 from Nexus1)
010 Use watchpoint #1 (IAC2 from Nexus1)
011 Use watchpoint #2 (IAC3 from Nexus1)
100 Use watchpoint #3 (IAC4 from Nexus1)
101 Use watchpoint #4 (DAC1 from Nexus1)
110 Use watchpoint #5 (DAC2 from Nexus1)
111 Use watchpoint #6 or #7 (DCNT1 or DCNT2 from Nexus1)
Summary of Contents for MPC5553
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