A.13.1 ATB interface

The following table shows the signals of the ATB interface.

Table A-36 ATB interface signals

Signal Type Description
ATCLKEN Input ATB clock enable
ATREADYMx Input
ATB device ready:
0Not ready.
1Ready.
AFVALIDMx Input FIFO flush request.
ATDATAMx[31:0] Output ATB data bus.
ATVALIDMx Output
ATB valid data:
0No valid data.
1Valid data.
ATBYTESMx[1:0] Output
CoreSight ATB device data size:
0b001 byte.
0b012 byte.
0b103 byte.
0b114 byte.
AFREADYMx Output
FIFO flush acknowledge:
0FIFO flush not complete.
1FIFO flush complete.
ATIDMx[6:0] Output ATB trace source identification.
SYNCREQMx Input
Synchronization request.
The input must be driven HIGH for one ATCLK cycle.
Non-ConfidentialPDF file icon PDF versionARM 100095_0002_04_en
Copyright © 2014-2016 ARM. All rights reserved.