Other Parts Discussed in Thread: TM4C1231H6PGE,
Hi Team,
We are using TPS25740B USB PD controller , LM73606RNPR DC/DC converter, and TIVA MCU ,TM4C1231H6PGE in our design. Attached the design corresponding to these ICs.
We need to get the info of USB PD voltage (load connected to the unit) at MCU with help of USB PD control lines. Below is the truth table mentioned in TPS25740B datasheet.
|
USB PD voltage |
CTL-1 |
CTL-2 |
CTL-3 |
|
|
5 V |
High Z |
High Z |
High |
|
|
9 V |
High Z |
Low |
High |
|
|
15 V |
Low |
Low |
High |
|
|
20 V |
Low |
Low |
Low |
The High Z state voltage is being observed as 1V, and MCU is not able to read this properly. Could you please comment how the implementation can be done for the MCU to understand this data properly?
Appreciate your quick response.
Best Regards,
Spandana Peramala.
