0
\$\begingroup\$

Can I simply attach multiple USB1.1 slave devices to a bus like I can with I2C (config A), or does the spec require a USB hub IC (config B)? Power in this application will come from a separate bus.

enter image description here

\$\endgroup\$
2
  • 3
    \$\begingroup\$ No. Despite the name, USB connections are always point to point. It just gives some aspects of the logical functionality of a bus. \$\endgroup\$
    – Finbarr
    Commented Mar 30, 2023 at 10:00
  • 1
    \$\begingroup\$ Among other things, the hub provides the means for the host to enumerate attached devices and assign addresses to them. \$\endgroup\$ Commented Mar 30, 2023 at 13:32

1 Answer 1

4
\$\begingroup\$

Can I simply attach multiple USB1.1 slave devices to a bus like I can with I2C (config A), or does the spec require a USB hub IC (config B)?

USB is a point-to-point system and not a multi-slave or multi-peer system so no, config A is invalid.

\$\endgroup\$
0

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.