Adam,
It also depends on what PMIC they choose to use. Make sure the one they choose will support the power requirements for both devices.
Please mark this Forum post as answered via the Verify Answer button below if it helps answer your question. Thanks!
Marc,
Even though pins "3 and 4" change from CVDD_DSP to CVDD and CVDD_HDVCIP to CVDD, these are not the same as pin "2". correct? Perhaps it would be more appropriate that these be labeld as no connect for the ARM only version. Is this statement accurate? I feel the answer to this should be enough to address JDSU's question.
Pin 1 - CVDD_ARM - PMIC Switcher 1
Pin 2 - CVDD - DC/DC Controller
Pin 3 - CVDD - - PMIC Switcher 2
Pin 4 - CVDD - - PMIC Switcher 2
DM814x
Pin 3 - CVDD_DSP - PMIC Switcher 2
Pin 4 - CVDD_HDVICP - PMIC Switcher 2
The power pins always need to be connected to their respective power supplies, even if the module is not used. So for the AM387x the DSP and HDVICP power pins would be connected to CVDD, as shown in the AM387x datasheet.
Regards,Marc
This is still leaving the customer unsure of the direction to go. They want to be able to configure the power of their processor board to be able to handle AM387x and DM814x without changing any layout, however the answer you shared does not appear to allow for this. How do we recommend they accomplish this?
Thank you,
Adam