> descriptors (BDs) from the CPM with the OV bit set (bit 14 of the RxBD > status/control field, "Overrun. Set when a receiver overrun > occurs during > reception").
Check the following: - SDRAM setup. If ORx(BIH)=1 makes the problem go away, your burst setup or the /TA pullup is broken. NB: Neither the SCC nor the SMC do bursts. - Check pullups as per UM recommendation. I tend to recommend 1k. - Did you by accident happen to enable any IDMA lines? - Did you happen to misconfigure RCCR(DRxM)? - Did you happen to misconfigure the SDCR? One other thing. If you have an old BDM debugger *and* if the problem occurs *only* with the BDM debugger hooked up, you may want to check for an update or replacement. Old debuggers sometimes used a method to do BDM which could stall the DMAs in the machine and cause this kind of overrun/underrun effect. Heinz
