Freescale Semiconductor MPC5553 - Watchpoint Trigger Register (WT)

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.
Table 25-30 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 0000
W
Reset0000000000000000
Nexus Reg 0xB
1514131211109876543210
R0000000000000000
W
Reset0000000000000000
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)