MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
25-34
Freescale Semiconductor
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R OPC
MCK_DIV
EOC
0
PTM WEN
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
0x2
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
OVC
EIC
TM
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Nexus Reg
0x2
Figure 25-13. Development Control Register 1 (DC1)
Table 25-25. DC1 Field Descriptions
Bits
Name
Description
31
OPC
1
Output port mode control.
0 Reduced-port mode configuration (4 MDO pins)
1 Full-port mode configuration (12 MDO pins)
30–29
MCK_DIV
[1:0]
MCKO clock divide ratio.
00 MCKO is 1x processor clock freq.
01 MCKO is 1/2x processor clock freq.
10 MCKO is 1/4x processor clock freq.
11 MCKO is 1/8x processor clock freq.
28–27
EOC
[1:0]
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
26
—
Reserved.
25
PTM
Program trace method.
0 Program trace uses traditional branch messages
1 Program trace uses branch history messages
24
WEN
Watchpoint trace enable.
0 Watchpoint Messaging disabled
1 Watchpoint Messaging enabled
23–8
—
Reserved.
7–5
OVC
[2:0]
Overrun control.
000 Generate overrun messages
001–010 mReserved
011 Delay processor for BTM / DTM / OTM overruns
1XX Reserved
Summary of Contents for MPC5553
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