Voltage translator does not work/prevent boot

Atmelfan / pcb-ash-carrier

ASH jetson TX2 carrier board. Imported from ASH-MKII

http://gpa-robotics.com

2 stars 5 forks source link

Voltage translator does not work/prevent boot #4

Open Atmelfan opened 4 years ago

Atmelfan commented 4 years ago

Voltage level converters U2/U7 keeps the TX2 from booting. Most likely caused by UART1_TX being pulled up by U2 on boot.

UART1_TX

Atmelfan commented 4 years ago

UART7 is also affected by U7. nvidia_strapping

Atmelfan commented 4 years ago

Most of these issues is caused by LSF/TXB0204 are used to translate both Push-poll and Open-drain IO:s which is incorrect. Split the IO:s between multiple appropriate translators.