SPI with Very Strong Drive on SPC572L64

[Larsa]

We used to have that working but now can only used weak or medium drive on the SPI pins (SCK & SOUT).

Pin mapper or manual editing of the board.c file only gives us weak (0) or medium drive(1)

{(int16_t)MSCR_IO_INDEX(PORT_D, SCK_4), PAL_LOW, (iomode_t)PAL_SPC5_SSS(2) | PAL_SPC5_OERC(3) | PAL_SPC5_SMC | PAL_SPC5_ODC(2) | PAL_SPC5_ILS(0) | PAL_SPC5_IBE},

Any tips on how to fix this

[Larsa]

Do we have any updates on this subject..

We are still having the problem of the SPI bus only working in medium drive configuration and hence limits us to < 2Mbit/s

As can be seen in picture above, we have the Output set to Very Strong Drive, but still only get a medium drive output waveform

[Larsa]

And to explain it a bit more:

If we select weak             (OERC 0) drive we get weak drive (slow rise/fall time)  

If we select Medium        (OERC 1) drive we get medium drive (medium rise/fall time)  

If we select Strong          (OERC 2) drive we get weak drive (slow rise/fall time)  

If we select Very Strong  (OERC 3) drive we get medium drive (medium rise/fall time)  

This was not a issue a couple of years ago, something must be lost in translation.

DSPI is working but we are limited to < 2 Mbit due to the slow riis/fall times on SCK + MOSI and we realy need to get this working at full speed ASAP.