In SPI i am able to reach a max baud rate of 2mbps

[Questioner]

I am facing a issue in baud rate calculation for SPI in MPC5748G. I am able to reach a max of 2mbps speed. 

[lukaszadrapa]

Hi,

as mentioned in the datasheet, these are the max supported speeds:

 DSPI is clocked by F40 or F80 (40 or 80MHz):

 Baud rate is calculated as:

Min baud rate prescaler is 2:

Min baud rate scaler is 2:

If DBR (Double Baud Rate) is 1:

SCK baud rate = (80MHz / 2) * ((1+1)/2) = 40MHz

... which is also maximum for DSPI2, DSPI3, SPI1 and SPI2 as mentioned in the datasheet.

Regards,

Lukas