CAN-USB Intelligent CANBus-USB Interface

Documentation Description

With the CAN-USB adapter it is an easy way to connect a CAN network to a Personal computer or
Notebook computer with USB port. Due to the Plug ™n Play feature of the USB port, the CAN-USB
adapter can be connected and disconnected to the computer system without leaving running
applications and restarting the system (except of the very first installation of the software drivers). The
software driver supplies an API to the user, which is mostly identical to other CAN APIs from JANZ.

Hardware Features

• embedded design using a powerful 16MHz RISC processor
• 64kB SRAM (used for message buffering and extended message filtering)
• USB 1.1 interface (also compatible to USB 2.0)
• four LEDs for status indication
• industrial standard SJA1000 CAN controller
• optical decoupled CAN interface (non decoupled CAN interface optional on request)
• software switchable CAN bus termination
• CAN bitrates up to 1MBit/s supported
• USB- and CAN-message buffers
• 9 pol DSUB male connector for CAN
• Type B connector for standard USB cable
• in field firmware updates possible
• very small housing (53 x 55 x 20 mm)

Firmware
The firmware is that piece of software which runs on the device's RISC microcontroller (not on the
user PC) and has the following main features:

• 11 bit and 29 bit identifiers are supported1 - 4 CAN-USB adapter (User's Manual) • Introduction© Janz Automation system AG Rev. 1.0CB-USB-01001/01002
• user configurable extended acceptance filtering
• configurable synchronization message generation (a message which will be send periodically within a user configurable time interval)
• queue buffer with different priorities for outgoing CAN messages
• queue buffer for incoming messages
• integrated bootloader for in field firmware updates
• error and status reporting, busload counters
• sniffing mode
• Self test mode

Software

• Driver support for Windows 2000/XP™ (and Linux)    
• a SDK is required for first time CAN-USB use.

Datasheet