UM0434 datasheet(344/390 Pages) STMICROELECTRONICS

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UM0434

Nexus3 module

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Table 235 details the watchpoint trigger register fields.

Note:

The WT bits only control program/data trace if the TM bits within DC1 have not already been

set to enable program and data trace respectively.

Table 235.

WT field descriptions

Bits

Name

Description

31–29

PTS

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

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)

25–23

DTS

Data 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)

22–20

DTE

Data 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)

19–0

—

Reserved, should be cleared

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