Nexus
MPC5565 Microcontroller Reference Manual, Rev. 1.0
24-44
Freescale Semiconductor
NOTE
The WT bits will only control program/data trace if the TM bits in the
development control register 1 (DC1) have not already been set to enable
program and data trace, respectively.
24.11.7 Data Trace Control Register (DTC)
The data trace control register controls whether DTM messages are restricted to reads, writes, or both for
a user programmable address range. There are two data trace channels controlled by the DTC for the
Nexus3 module. Each channel can also be programmed to trace data accesses or instruction accesses.
details the data trace control register fields.
22–20
DTE[2:0]
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.
Nexus Reg: 0x000D
Access: R/W
31
30
29
28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
R
RWT1 RWT2
0
0
0
0
0
0
0
0
0
0
0
0
RC1 RC20
0
0
DI1 DI2
0
0
W
Reset 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 24-22. Data Trace Control Register (DTC)
Table 24-32. DTC Field Description
Field
Description
31–30
RWT1[1:0]
Read/write trace 1.
00 No trace enabled
X1 Enable data read trace
1X Enable data write trace
29–28
RWT2[1:0]
Read/write trace 2.
00 No trace enabled
X1 Enable data read trace
1X Enable data write trace
27–8
Reserved.
Table 24-31. WT Field Descriptions (continued)
Field
Description
Содержание MPC5565
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