AM69A: Power Requirements

Noah Hicks

Part Number: AM69A
Other Parts Discussed in Thread: AM69, SK-AM69

Tool/software:

Hi,

I'm working on designing a power tree for the AM69A and wanted to confirm that I was grasping all the voltage rail requirements. I have some questions below:

Which rails should be powered by LDOs vs bucks?
What is the VDD_SD_DV_DSCRT rail for?
Do I have all the voltage rails required for this device listed?

Thanks,

Noah

1 month ago

0 Bill McCracken 30 days ago

TI__Expert 7065 points

1. Please refer to the AM69 Starter Kit and/or J784S4 EVM design files available on TI website for power component insights.

SK-AM69 Design Files

J784S4XEVM Evaluation board | TI.com

Here's a snapshot of the TI webpage example:

2. The VDD_SD_DV rail is used for supporting SD Card removable media memory. Per SD card spec, a Dual Voltage (DV) rail for supplying 3.3V & 1.8V is required to operate at both standard & high-speed data rates.

3. Please refer to AM69 Data Manual, section and SK-AM69 design files for reference.

AM69x Processors, Silicon Revision 1.0 datasheet (Rev. D)

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AM69A: Power Requirements