Hi,
I would like to ask a question with EVMAM1808.
TPS65070'S PB_OUT
First, it is an open-drain output ⟹ pullup resistor is needed.
Example: Fig.49 of TPS65070 datasheet SLVS950C.
EVMAM1808:
- No pullup
- Instead, R199=22Ω which the value normally used for series termination.
However, TPS65070's PB_OUT as an input to OMAP L138 is not a high-speed signal at all, which changes only with PB_IN#.
It therefore seems to me that this is an error in the connection here. Could anyone confirm it?
Zheng