Table 17-7 Selected Pin Protocol Register Bit Assignments; Figure 17-5 Selected Pin Protocol Register Bit Assignments - ARM Cortex-M3 Technical Reference Manual

31
Bits Field
[31:2] -
[1:0] PROTOCOL
ARM DDI 0337G
Selected Pin Protocol Register
Use the Selected Pin Protocol Register to select which protocol to use for trace output.
The register address, access type, and Reset state are:
Address
0xE00400F0
Access Read/write
Reset state
0x01
Figure 17-5 shows the bit assignments of the Selected Pin Protocol Register.
Table 17-7 describes the bit assignments of the Selected Pin Protocol Register.
Function
Reserved
00 - TracePort mode
01 - SerialWire Output (Manchester). This is the reset value.
10 - SerialWire Output (NRZ)
11 - Reserved.
Note
If this register is changed while trace data is being output, data corruption occurs.
Formatter and Flush Status Register
Use the Formatter and Flush Status Register to read the status of TPIU formatter.
The register address, access type, and Reset state are:
Address
0xE0040300
Access Read only
Reset state
0x08
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Figure 17-5 Selected Pin Protocol Register bit assignments

Table 17-7 Selected Pin Protocol Register bit assignments

Trace Port Interface Unit
2 1 0
PROTOCOL
17-11