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DLPR410: REV_SEL0, REV_SEL1 pins

Part Number: DLPR410

Hello,

I would like to confirm the REV_SEL0 and REV_SEL1 pins. DLP0101A_SCH.pdf shows each pins are 4.7k pull-down as below.

However, DLPR410 data sheet (JAJSGM0E –AUGUST 2012–REVISED DECEMBER 2018) says the pull-down must be 10k. Which resistance value is correct?

Also, which REVISION SELECT should be selected(00 or 01)? Do we need to confirm the DLPR410 revision?

Regards,

Uryyy

  • Hello Urrry,

    The standard is revision 00.  Rev 01 can be used, but it loads and reads from another area of the prom.  4.7 kOhm is a stronger pulldown, but 10 kOhm can also work.  Let me check with one of our board folks and see if they have a recommendation on which is they prefer.  I would go with what the data sheet says.

    Fizix

  • Hello Urrry,


    Finally able to get back to this.  Our layout guy indicate that either value will work, but the 4.7 kOhm is stronger and will provide better noise immunity, therefore would be slightly preferable to 10 kOhm in most circumstances.  What is used in the EVM is the 4.7 kOhm.

    Fizix