9 Trigger Counter register, TRG

In Circular Buffer mode, the Trigger Counter register specifies the number of 32-bit words to capture in the trace memory, after detection of either a rising edge on the trigin input or a trigger packet in the incoming trace stream, that is, where atid_s = 0x7D. The value programmed must be aligned to the frame length of 128 bits.

The TRG register characteristics are:

Attributes
Offset

0x001C

Type

Read-write

Reset

0x--------

Width

32

The following figure shows the bit assignments.

Figure 9-368 TRG register bit assignments
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The following table shows the bit assignments.

Table 9-381 TRG register bit assignments

Bits Reset value Name Function
[31:0] UNKNOWN TRG

Trigger count. This count represents the number of 32-bit words of trace that are captured between a trigger packet and a trigger event. On writes, the value written must be aligned to the frame length of 128 bits.

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