USB CDC (ECM, ACM, OBEX) - USBware Components

The CDC specification has been developed to answer the need of telecommunication services (devices that have traditionally terminated an analog or digital telephone line), and medium speed networking services ("Always Connected" LAN/WAN media types) and is ideal for devices such as, Mobile Phones, Analog/ADSL/Cable Modems, analog/digital telephones Wireless Terminals, Ethernet Adaptors as well as Legacy and other network devices.

The CDC USB Driver support the following subclasses: ECM, ACM, OBEX, Device Management.

The CDC USB Class Driver supports the host-side communication with CDC USB peripherals, while the CDC USB Function Driver provides the required device-side USB CDC implementation for such peripherals.

A USB Class Driver is a Logical Device Driver (LDD), which controls USB devices that provide common functionality and are implemented in compliance with a specific device class.

A USB Function Driver is a driver implemented within a device in order to handle the device-specific functionality of a standard or custom USB device function. This driver provides the counterpart of the USB Class Driver.

A CDC USB Class/Function Driver is a USB class/function driver that supports the USB Class Definition for Communication Devices as well as the CDC Subclass for Wireless Mobile Communication Devices.

Jungo's USB CDC Class Driver and USB CDC Function Driver are fully functional USB communication class/device drivers (respectively). The CDC Class Driver is part of Jungo's USB Host Stack, which offers a complete solution for USB host communication for embedded systems that do not natively support USB. The CDC Function Driver is part of Jungo's USB Device Stack, which enables software and device manufacturers to incorporate standard USB device/function connectivity into their embedded devices.

CDC-ACM (Abstract Control Model) allows any communication device to provide a serial communication interface (e.g modem devices that send and receive AT commands).

CDC-ECM (Ethernet Networking Control Model) offers device manufacturers to interface as a standard NIC (Network Interface Card) device. This interface is usually adopted by high speed LAN networking devices allowing high speed Ethernet data transfer over USB.

OBEX (Object Exchange) is compliant with the Wireless Mobile Communication OBEX function model, supporting OBEX applications over USB.

WMC-Device Management is compliant with the Device Management function model, supporting a minimal AT command based control model.

RNDIS – provides CDC like communication capabilities on Windows PCs supporting the Microsoft RNDIS protocol. Please refer to the RNDIS webpage for more info.