在28335 Silicon Errata Literature Number: SPRZ272G
中有写到
Advisory Memory: Possible Incorrect Operation of XINTF Module After Power Up
Revision(s) Affected 0, A
Details The XINTF module may not get reset properly upon power up. When this happens,
accesses to XINTF addresses may cause the CPU to hang. This issue occurs only upon
power up. It does not happen for other resets such as a reset initiated by the watchdog
or an external (warm) reset using the XRS pin.
Workaround(s) After coming out of reset, software should force a watchdog (WD) reset if WDFLAG = 0
in the WDCR register. WDFLAG = 0 implies that an external reset occurred, for example,
a power-on reset. After exiting the WD reset, WDFLAG will be 1. In this case, software
should clear the WDFLAG bit before continuing normal code execution. This issue
affects only the XINTF module.
即XINTF模块可能因为上电使DSP宕机,但是这个说明不是很清楚
有能给讲明白,提供解决方案的吗?比如说上电后怎么弄 能避免这个问题