Never mind, I solved it. My software bug was resetting DWDELSEL to zero, and apparently the hardware doesn't like this value to be zero. All working now

I've been messing around with the SPIM module to interface with a quad flash chip. So far I have achieved: 1) Using Normal IO Mode to read, erase, write flash 2) Using DMM mode to read flash So the next task was to use DMA Write Mode to write to flash. I followed the instructions listed in 6.22.5.5 ...

Okay, thank you for letting me know that. The user manual describes the single bit in the CLK_LDOCTL register as "DPD (deep power down mode) Wake Up Time Select Bit", so I wasn't able to infer that this bit would change the LDO output to 1.26V.

Thank you, that helped. Looks like the piece I was missing was setting the flash controller cache miss cycles to the appropriate value for the higher frequency. Now I'm am running at 192 MHz. Still didn't exactly see in SystemInit() where the LDO voltage was being changed. Maybe it happens automatic...

I want to have the M487 CPU core run at maximum frequency (192 MHz). I already have the PLL setup and can get it up to 96 MHz right now, but if I try to go faster the CPU stalls out. Table 6.2-2 of User Manual says 192 MHz is only possible in Turbo mode, but it does not explain what "turbo" mode is ...

I get that it doesn't have all EBI pins, just seems strange that they would only have 1 out of 24 pins missing from being able to do Figure 6.30-2 (16-bit EBI data width with 16-bit device), especially if they have doubles for other pins. In fact, none of the examples shown in the EBI section can tr...

I'm planning on utilizing the EBI interface. For my part, M487SIDAE (64 pin package), the datasheet has a pin for all 16 AD pins, except AD10. And I notice that there is 2 options for ADR19. Was this a typo, or is AD10 really not available?

Can the NUC123 use its internal oscillator (22.1184 MHz) as the clock source for USB device, or does it require an external oscillator?

I urgently need to know how to perform the SWD unlock sequence without a NuLink programmer.