PXN20RM Datasheet, PDF (1183/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

Nexus Development Interface (NDI)
Table 36-20. DC1 Field Descriptions (continued)
Field
Description
EOC
EVTO Control.
00 EVTO upon occurrence of watchpoints (configured in DC2).
01 EVTO upon entry into debug mode.
10 EVTO upon timestamping event.
11 Reserved.
PTM
Program Trace Method.
0 Program trace uses traditional branch messages.
1 Program trace uses branch history messages.
WEN
Watchpoint Trace Enable.
0 Watchpoint messaging disabled.
1 Watchpoint messaging enabled.
OVC
Overrun Control.
000 Generate overrun messages.
001–010 Reserved.
011 Delay processor for BTM / DTM / OTM overruns.
1XX Reserved.
EIC
EVTI Control.
00 EVTI is used for synchronization (program trace/ data trace).
01 EVTI is used for debug request.
1X Reserved.
TM
Trace Mode. Any or all of the TM bits may set, enabling one or more traces.
000 No trace.
1XX Program trace enabled.
X1X Data trace enabled.
XX1 Ownership trace enabled.
1 _{The output port mode control bit (OPC) and MCKO divide bits (MCK_DIV) are shown for clarity. These functions are controlled}
globally by the NPC port control register (PCR). These bits are writable in the PCR but have no effect.
DC2 is shown in Figure 36-15 and its fields are described in Table 36-21.
Nexus Reg: 0x3
Access: User read/write
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
EWC
W
00000000
Reset 0
0
0
0
0
0
0
0
00000000
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R0
0
0
0
0
0
0
0
00000000
W
Reset 0
0
0
0
0
0
0
0
00000000
Figure 36-15. Development Control Register 2 (DC2)
Freescale Semiconductor
PXN20 Microcontroller Reference Manual, Rev. 1
36-33