Texas Instruments CC2650DK Benutzerhandbuch
Cortex-M3 Processor Registers
2.7.5.6
FFCR Register (Offset = 304h) [reset = X]
FFCR is shown in
and described in
.
Formatter and Flush Control When one of the two single wire output (SWO) modes is selected, ENFCONT
enables the formatter to be bypassed. If the formatter is bypassed, only the ITM/DWT trace source
(ATDATA2) passes through. The TPIU accepts and discards data that is presented on the ETM port
(ATDATA1). This function is intended to be used when it is necessary to connect a device containing an
ETM to a trace capture device that is only able to capture Serial Wire Output (SWO) data. Enabling or
disabling the formatter causes momentary data corruption. Note: If the selected pin protocol register
(SPPR.PROTOCOL) is set to 0x00 (TracePort mode), this register always reads 0x102, because the
formatter is automatically enabled. If one of the serial wire modes is then selected, the register reverts to
its previously programmed value.
enables the formatter to be bypassed. If the formatter is bypassed, only the ITM/DWT trace source
(ATDATA2) passes through. The TPIU accepts and discards data that is presented on the ETM port
(ATDATA1). This function is intended to be used when it is necessary to connect a device containing an
ETM to a trace capture device that is only able to capture Serial Wire Output (SWO) data. Enabling or
disabling the formatter causes momentary data corruption. Note: If the selected pin protocol register
(SPPR.PROTOCOL) is set to 0x00 (TracePort mode), this register always reads 0x102, because the
formatter is automatically enabled. If one of the serial wire modes is then selected, the register reverts to
its previously programmed value.
Figure 2-136. FFCR Register
31
30
29
28
27
26
25
24
RESERVED
R/W-X
23
22
21
20
19
18
17
16
RESERVED
R/W-X
15
14
13
12
11
10
9
8
RESERVED
TRIGIN
R/W-X
R/W-1h
7
6
5
4
3
2
1
0
RESERVED
ENFCONT
RESERVED
R/W-X
R/W-1h
R/W-X
Table 2-163. FFCR Register Field Descriptions
Bit
Field
Type
Reset
Description
31-9
RESERVED
R/W
X
Software should not rely on the value of a reserved. Writing any
other value than the reset value may result in undefined behavior.
other value than the reset value may result in undefined behavior.
8
TRIGIN
R/W
1h
Indicates that triggers are inserted when a trigger pin is asserted.
7-2
RESERVED
R/W
X
Software should not rely on the value of a reserved. Writing any
other value than the reset value may result in undefined behavior.
other value than the reset value may result in undefined behavior.
1
ENFCONT
R/W
1h
Enable continuous formatting: 0: Continuous formatting disabled 1:
Continuous formatting enabled
Continuous formatting enabled
0
RESERVED
R/W
X
Software should not rely on the value of a reserved. Writing any
other value than the reset value may result in undefined behavior.
other value than the reset value may result in undefined behavior.
213
SWCU117A – February 2015 – Revised March 2015
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