Quantcast
Channel: Motor drivers forum - Recent Threads
Viewing all articles
Browse latest Browse all 14309

DRV8316REVM: SPI Undershoot and Ringing

$
0
0
Part Number: DRV8316REVM

Hello,

I was probing the SPI line on the DRV8316REVM and I was seeing ringing/undershoot on edge transitions on many lines:

Open Drain MISO

CH1: SCLK, CH2: MISO, CH4: CS

Push Pull MISO

CH1: SCLK, CH2: MISO, CH4: CS

I found a custom board that used 3x DRV8316s on the same SPI bus and probed the SPI to see if this issue was present on different boards:

CH1: SCLK, CH2: MISO, CH4: CS

It looks like the undershoot is still prevalent on the MISO line.

I guess what I am trying to ask is what approach should we go about this?

Better layout? Series resistors? RC filter at the MCU side for MISO?

Is this a known issue with this device? Or is this still a measurement setup issue on my end?


Viewing all articles
Browse latest Browse all 14309

Latest Images

Trending Articles



Latest Images