Query Regarding Unused DSI and ANA Pins on STM32MP157FAC1

[PS_115]

Hello,

We are designing a custom board using the STM32MP157FAC1 device. In our design, we are not using the DSI interface or the ADC peripheral.

We would like your guidance on the recommended handling of the corresponding unused pins.

(1.) DSI Interface:
Since the DSI interface is not used, how should the following differential signals be terminated ?
(a.) DSI_CKP / DSI_CKN
(b.) DSI_D0P / DSI_D0N
(c.) DSI_D1P / DSI_D1N

(2.) Analog Inputs:
As the ADC is not being used, what is the recommended way to connect or terminate the ANA0 and ANA1 pins ?

Could you please advise the recommended hardware implementation for these unused pins?

Regards,

[PatrickF]

Hi,

 

Please refer to AN5031 Table “Supply usage for unused features”

More generally, if not used:

• DSI outputs should be left open
• Analog inputs can be left open or grounded

 

Regards.