STM32H750 and SDRAM signal groups

[BHell.1]

Need your advice.

PCB routing. I have Divided signals into 4 groups + (CLK) :

1: Address: SDRAM_BA[0-1]/SDRAM_A[0-11]

2: Command: SDNRAS/SDNCAS/SDNWE

3: Control: NE0/CKE0/NBL[0-1]

4: Data: SDRAM_D[0-7] ( sub goup1 ) & [8-15] ( sub group 2)

5: SDCLK

I'm not sure about DQM ( output byte mask for the write access (DQM).) should this belong to data pair(s) or Control pair? According to ST it is Control goup. According to Miron TN-46-14 it is data group?

Thanks

Thanks

[CYANG.1]

Hi

DQM is a part of data pair. If you want use them, DQM should be data group and match length with correspond data signals.