User guide

Trace Port Interface Unit
ARM DDI 0337I Copyright © 2005-2008, 2010 ARM Limited. All rights reserved. 11-7
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Table 11-3 shows the TPIU_FFSR bit assignments.
11.3.3 Formatter and Flush Control Register, TPIU_FFCR
The TPIU_FFCR characteristics are:
Purpose Controls the TPIU formatter.
Usage constraints There are no usage constraints.
Configurations This register is available in all processor configurations.
Attributes See Table 11-1 on page 11-5.
Figure 11-4 shows the TPIU_FFCR bit assignments.
Figure 11-4 TPIU_FFCR bit assignments
Table 11-4 shows the TPIU_FFCR bit assignments.
The TPIU can output trace data in a Serial Wire Output (SWO) format. See Serial Wire Output
format on page 11-4.
Table 11-3 TPIU_FFSR bit assignments
Bits Name Function
[31:4] - Reserved
[3] FtNonStop Formatter cannot be stopped
[2] TCPresent This bit always reads zero
[1] FtStopped This bit always reads zero
[0] FlInProg This bit always reads zero
Reserved
31 9 8 7 2 1 0
Reserved
TrigIn
EnFCont
Reserved
Table 11-4 TPIU_FFCR bit assignments
Bits Name Function
[31:9] - Reserved.
[8] TrigIn This bit Reads-As-One (RAO), specifying that triggers are inserted when a trigger pin is asserted.
[7:2] - Reserved.
[1] EnFCont Enable continuous formatting. Value can be:
0 = Continuous formatting disabled.
1 = Continuous formatting enabled.
[0] - Reserved.