A.15.2 ETM APB signals

Details of the ETM APB signals.

Table A-52 ETM APB signals

Signal name Type Source/destination Description
PADDRDBG[16:2] Input Debug APB interconnect Debug APB Address Bus.
PADDRDBG31 Input

Originates as an output signal from the Debug Access Port (DAP):

0b0Indicates an access from software.
0b1Indicates an access from hardware (JTAG).
PENABLEDBG Input The Debug APB interface is enabled for a transfer.
PSELDBG Input Debug APB slave select signal.
PREADYDBG Output Extends Debug APB transfers.
PRDATADBG[31:0] Output Debug APB read data.
PWDATADBG[31:0] Input Debug APB write data.
PWRITEDBG Input Debug APB transfer direction: 0b0 = Read, 0b1 = Write.
PSLVERRDBG Output Debug APB error response.
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