A.1.8. APB - Access Port signals

Table A.9 shows the DAP APB-AP signals.

Table A.9. DAP APB-AP signals

Name

Type

Clock domain

Description

dapclk

Input

dapclk

DAP clock.

dapclken

Input

dapclk

DAP clock enable.

dapresetn

Input

dapclk

DAP reset.

dapsel

Input

dapclk

DAP select.

dapenable

Input

dapclk

DAP enable.

dapwrite

Input

dapclk

DAP write or read.

dapabort

Input

dapclk

DAP abort.

dapcaddr[7:2]

Input

dapclk

DAP compressed address bus.

dapwdata[31:0]

Input

dapclk

DAP write data bus.

pready

Input

dapclk

APB ready.

pslverr

Input

dapclk

APB slave error.

prdata[31:0]

Input

dapclk

APB read data bus.

deviceen

Input

dapclk

Device enable.

dapready

Output

dapclk

DAP ready.

dapslverr

Output

dapclk

DAP slave error.

daprdata[31:0]

Output

dapclk

DAP read data bus.

psel

Output

dapclk

APB select.

penable

Output

dapclk

APB enable.

pwrite

Output

dapclk

APB write or read.

paddr[31:2]

Output

dapclk

APB address bus.

pwdata[31:0]

Output

dapclk

APB write data bus.

pdbgswen

Output

dapclk

Enable software access to Debug APB.

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