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TMS570LC4357: EMIF pins

Sankar P
Prodigy 210 points
Part Number: TMS570LC4357

Hi,

Can I know the full form of DQM in EMIF_nDQM pin in interfacing to TMS570LC4357 and the clock frequency of the same controller.

And the detailed difference between the select strobe mode and normal mode of interfacing flash to the TMS570LC4357.

Regards,

Susvitha

  • 0
    TI__Guru**** 196306 points
    Hello,

    The behavior of the EMIF_nCS signal is the only difference between Normal mode and Select Strobe mode. In Normal mode, the EMIF_nCS signal becomes active at the beginning of the setup period and remains active for the duration of the transfer. In Select Strobe mode, the EMIF_nCS signal functions as a strobe signal, active only during the strobe period of an access.

    For asynchronous interface, the DQM[1:0] acts as byte enables. When reading/writing the byte 0, the DQM[0] is active. When reading/writing the byte 1, the DQM[0] becomes active. If you do 16-bit or 32-bit read/write, both DQM[1:0] are active. DQM[1:0] are active LOW signals.