ARM Cortex-M3

Signal Descriptions
ARM DDI 0337G Copyright © 2005-2008 ARM Limited. All rights reserved. A-15
Unrestricted Access Non-Confidential
ETMFOLD Output Opcode fold. An IT opcode has been folded in this cycle. PC advances past the
current (16-bit) opcode plus the IT instruction (16 bits). This is reflected in the
ETMIA.
ETMFIFOFULL Input Driven by the ETM (if connected). ETMFIFOFULL is asserted when the
ETM FIFO is full, and causes the processor to stall until the FIFO has drained,
so ensuring that no trace is lost.
DSYNC Output Synchronization pulse from DWT.
Table A-12 ETM interface (continued)
Name Direction Description