Chapter 11 Fcan Controller; Function Overview - NEC UPD703116 User Manual

The V850E/IA1 features a 1 channel on-chip FCAN (Full Controller Area Network) controller that complies with the
CAN specification Ver. 2.0, PartB active.

11.1 Function Overview

Table 11-1 presents an overview of V850E/IA1 functions.
Function
Protocol
Baud rate
Data storage
Mask functions
Message configuration
No. of messages
Message storage
method
Remote reception
Remote transmission
Time stamp function
Diagnostic functions
Low-power mode
Remark n = 00 to 31

CHAPTER 11 FCAN CONTROLLER

Table 11-1. Overview of Functions
CAN Protocol Ver. 2.0, PartB active (standard and extended frame transmission/reception)
Maximum 1 Mbps (during 16 MHz clock input)
• Allocated to common access-enabled RAM area
• RAM that is mapped to an unused message byte can be used for CPU processing or other
processing
• Four
• Global masks and local masks can be used without distinction
Can be declared as transmit or receive messages
32
• Storage to receive buffer corresponding to ID
• Storage to buffer specified by receive mask function
• Remote frames can be received in either the receive message buffer or the transmit message
buffer
• If a remote frame is received by a transmit message buffer, there is a choice between having the
remote request processed by the CPU or starting the auto transmit function.
The remote frame can be sent either by setting the transmit message's RTR bit (M_CTRLn register)
or by setting the receive message's send request.
A time stamp function can be set for receive messages and transmit messages.
• Read-enabled error counter is provided.
• "Valid protocol operation flag" is provided for verification of bus connections.
• Receive-only mode (with auto baud rate detection) is provided.
• Diagnostic processing mode is provided.
• CAN sleep mode (wake up function using CAN bus is enabled)
• CAN stop mode (wake up function using CAN bus is disabled)
User's Manual U14492EJ5V0UD
Description
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