ML9620 Product Introduction Sheet

CAN Protocol Controller LSI

 
Documents

»  PDF of this Data Sheet (178 KB) is available.     ML9620_Introduction_Sheet.pdf

»  CAN Controller IC  ML9620

»  Users Manual  ML9620

Description

The controller area network, CAN, standard was developed by Bosch, Germany for in-vehicle data communications over a bi-directional dual-wire bus. CAN is authorised by SAE and ISO organisations as a standard protocol and is widely adopted in Europe. The use of CAN entails considerable reduction in cables and weight. It efficiently handles the increasing amount of data flow among automotive electronic systems and permits more reliable diagnostics. CAN also fulfils the requirements for ecology cars, such as CO2-free electromobiles. The ML9620 is a CAN protocol controller peripheral LSI. Unlike other car LAN solutions, CAN spans over a data speed range from 10kbps to 1Mbps and incorporates advanced error detection and handling techniques. ML9620 provides various selectable host interfaces and connects to a CAN bus line serially via a bus transceiver. A system node, for instance power window or suspension control, connected to CAN typically consists of a system MCU, an ML9620 and a CAN transceiver LSI.

Features

»     Conforms to CAN protocol specification (Bosch, V.2.0 part b / Active)
»     Maximum 1 Mbps real-time communication control (programmable)
»     Communication system:
»     Transmission line is bi-directional, two-wire serial communications
»     NRZ (Non-Return to Zero) system using bit stuff function
»     Multi-master system, Broadcast system
»     Up to 32 messages x 8 bytes for each box
»     Number of messages can be extended by group message function (max: 2 groups)
»     Each message box with unique identifier mask
»     Programmable FIFO mode
»     Priority control by identifier
»     Normally 2032 types, 2032 x 218 types in extended format
»     Microcontroller interface
»     Both parallel and serial interfaces provided
»     Parallel interface: separate address/data bus type (with address latch signal/no address latch signal) and multiplexed address/data bus type.
»     Serial interface: Synchronous communication type
»     Three interrupt sources: transmission/receive/error
»     Two-message interface register buffer
»     Error control:
»     Bit error/stuff error/CRC error/form error/acknowledge error detection functions
»     Re-transmission / error status monitoring function when error occurs
»     Error flags for bit, stuff, CRC, form and acknowledge errors
»     Communication control by transmission request function
»     Sleep/Stop mode function
»     Disable Automatic Retransmission mode for Time Triggered CAN applications
»     Master clock frequency: 8MHz (VDD=3.3V), 8~16MHz (VDD=5V)
»     Supply voltage: +3.0~3.6V or +4.5~5.5V
»     Operating temperature range –40 to +125°C
»     Package: 44-pin QFP (QFP44-P-910-0.80-2K)