Protocol

USB CDC-ACM

Communications Device Class · USB serial

Lab ready Full lab

USB class that presents a virtual COM port over bulk endpoints. Line coding and control lines map UART semantics onto USB transfers.

Domains

Tags

serialusb-classcom-portbulk

Sources

  • USB Class Definitions for Communication Devices (CDC)
  • PSTN subclass / ACM (Abstract Control Model)

Related protocols

USB 2.0

Lab ready

Host-centric shared bus with control, bulk, interrupt, and isochronous transfers at low/full/high speed. Device identity lives in descrip…

embedded

UART / RS-232

Lab ready

Asynchronous character framing with start bit, 5–9 data bits, optional parity, and one or two stop bits. RS-232 defines voltage levels an…

embeddedindustrial

USB HID

Lab ready

USB class for keyboards, mice, gamepads, and vendor-defined reports. Report descriptors declare bit-level layouts that hosts parse into i…

embeddedav