Other Parts Discussed in Thread: TMS320F28335
Hi.We are use TMS320F2812PGFA. We produce 30 plates for testing with this DSP, but 11 of 30 have a strange problem: eCAN random work after power up or not work. If eCan not start after power up - HW or SW reset not help to start eCan(not jump to recive iterrupt). If eCan start after power up - HW or SW reset not change anything - eCan steel work. I'm know about power sequencing in this DSP. In our devices 1.9V quick start after 3.3V reached 2.5V and RST while power up is low for 100ms, evrything norm about that. I am use different compination of capasitors, change timing of power seqencing, but nothing happens. Power of DSP clear. We nedd help of community. What is this? maybe external pullup or pulldown or filter capasiter needed on some pin?
