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MSP430F5529: MSP430F5529

singam vamshi krishna
Intellectual 775 points
Part Number: MSP430F5529
Other Parts Discussed in Thread: LMX2595

Hello everyone. I am making use of MSP430F5529 Controller to transfer 24-bit data to slave device LMX2595. So, for this I have done programming and now in order to implement this on PCB I had made schematic. I am attaching the schematic below, Please let me know are there any other connections.

Thanks in advance 

  • 0
    TI__Intellectual 2100 points

    Hi Vamshi,

    I am missing the interface wiring to the LMX2595....

    ...but I've got some comments on the schematics at its current state...

    - C79 is supposed to be a value from 1nF ...1.5nF(2.2nF)

    - C72/C73 are should be in the range 15..30pF (maybe the internal caps might be sufficient as well)

    - C76 shall be rather nF not pF, use 0.47uF (0.22uF -1uF)

    - AVCC1, DVCC1, DVCC2 shall all be connected to power, and each shall have a sufficient cal 0.1uF || 1nF

    - please remove the ground connection on Pin 77

    - am not sure what you would like to don on Pin 59 and 60.

    have a nice weekend

       Johann

  • 0 in reply to Johann Zipperer
    Intellectual 775 points

    Thank you for the reply. I have attached the controller interfaced with LMX2595.

  • 0 in reply to singam vamshi krishna
    TI__Intellectual 2100 points

    Hello again,

    Not quite right the LMX2585 has an SPI-interface and you connected it to I2C. This does not work !

    I recommend:

    MSP430<=>LMX2595  like UCxySTE<=> CSB; UCxySCL<=>SCK; UCxySIMO<=>SDI; UCxySOMI<=>MUXOUT;

    The rest is done by SW.

    You might need to change the UCxySOMI/Port functionality according the current function of MUXout.

    And for CSB, SCK, SDI foresee an pull up resistor of 4.7k ...10k each. This guarantees a stable situation while

    the MSP430 is in reset....

       have a nice day

          Johann

    PS: please foresee a debugger interface for tour MSP340...

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