E2F0016-19-43
¡ Semiconductor
MSM9225
CAN (Controller Area Network) Controller
¡ Semiconductor
im
This version: Aug. 1998
This version: Apr. 1999
MSM9225
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GENERAL DESCRIPTION
The MSM9225 is a microcontroller peripheral LSI which conforms to the CAN protocol for
high-speed LANs in automobiles.
FEATURES
•Conforms to CAN protocol specification (Bosch Co., V.2.0 part b/Full CAN)
• 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
• Maximum 16 messages
¥
8 bytes of message buffer
Number of messages can be extended by group message function (max: 2 groups)
• Priority control by identifier
Normally 2032 types, 2032
¥
2
18
types at extension
• Microcontroller interface
Corresponding to both parallel and serial interface
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
Interrupt is used for three outputs: transmission/receive/error
• Error control:
Bit error/stuff error/CRC error/form error/acknowledge error detection functions
Retransmission / error status monitoring function when error occurs
• Communication control by transmission request function
• Sleep/Stop mode function
• Supply voltage: 5 V
±10%
• Operating temperature: -40 to +115˚C
• Package: 44-pin plastic QFP (QFP44-P-910-0.80-2K) (Product name: MSM9225GA-2K)
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