9 AP Abort Register, ABORT

The ABORT register drives the abort pin on the DP, which goes to APs to abort the current transaction.

JTAG-DPAccess is through its own scan-chain using the ABORT instruction in the JTAG IR.
SW-DPAccess is by a write to offset 0x0 of the DP register map.

The ABORT register characteristics are:

Attributes
Offset

0x0000

Type

Write-only

Reset

0x0C013477

Width

32

The following figure shows the bit assignments.

Figure 9-1 ABORT register bit assignments
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The following table shows the bit assignments.

Table 9-2 ABORT register bit assignments

Bits Reset value Name Function
[4] 0b0 ORUNERRCLR Write 1 to this bit to clear the CTRLSTAT.STICKYORUN overrun error bit to 0.
[3] 0b0 WDERRCLR Write 1 to this bit to clear the CTRLSTAT.WDATAERR write data error bit to 0.
[2] 0b0 STKERRCLR Write 1 to this bit to clear the CTRLSTAT.STICKYERR sticky error bit to 0.
[0] 0b0 ABORTTRANS Write 1 to this bit to generate an abort. This aborts the current AP transaction.
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