| 摘要 |
PROBLEM TO BE SOLVED: To capture detailed information on an execution flow of a DSP in real time in a non-intrusive manner.SOLUTION: An ETM 232 monitors a DSP pipeline. Using this information, the ETM performs filtering/triggering and compression/packetization. The filtering and triggering operations are programmed by a user through a JTAG interface 84. DSP execution information is received by a compression/packetization unit 236, sent out of the ETM through a trace port, and fed into an off-chip or on-chip trace repository 240. A decompressor component 246 is a software component running on an ISDB 82, and takes a packet stream from the trace repository and, along with a program image, reconstructs an execution flow of the DSP, giving the user detailed visibility of the DSP pipeline. |
