8.3. Miscellaneous connections

These ports supplement the operation of the TPIU and are for the connection of other CoreSight components or other ASIC blocks. Table 8.2 shows the ports not described elsewhere.

Table 8.2. TPIU miscellaneous ports

NameTypeDescription
TRIGINInputFrom either a CTI or direct from a trace source. Used to enable the trigger to affect the output trace stream.
TRIGINACKOutputReturn response to the CTI acknowledgement to TRIGIN.
FLUSHINInputExternal control used to invoke an ATB signal and drain any old historical information on the bus.
FLUSHINACKOutputFlush response, goes HIGH to acknowledge FLUSHIN. If the completion of a flush is required then this can be established by the Formatter Flush and Control Register. See Formatter and Flush Control Register, 0x304.
EXTCTLOUT[7:0]OutputUsed as control signals for any configurable drivers on the output of the trace port such as serializers and output multiplexor.
EXTCTLIN[7:0]InputUsed as an input port for any configurable drivers on the output of the trace port such as serializers and output multiplexor.

Copyright © 2004-2009 ARM. All rights reserved.ARM DDI 0314H
Non-Confidential