saf-xc878m-16ffi5v Infineon Technologies Corporation, saf-xc878m-16ffi5v Datasheet - Page 108

• Manufacturer Part Number: saf-xc878m-16ffi5v
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

3.21
The MultiCAN module contains two Full-CAN nodes operating independently or
exchanging data and remote frames via a gateway function. Transmission and reception
of CAN frames is handled in accordance to CAN specification V2.0 B active. Each CAN
node can receive and transmit standard frames with 11-bit identifiers as well as extended
frames with 29-bit identifiers.
Both CAN nodes share a common set of message objects, where each message object
may be individually allocated to one of the CAN nodes. Besides serving as a storage
container for incoming and outgoing frames, message objects may be combined to build
gateways between the CAN nodes or to setup a FIFO buffer.
The message objects are organized in double chained lists, where each CAN node has
it’s own list of message objects. A CAN node stores frames only into message objects
that are allocated to the list of the CAN node. It only transmits messages from objects of
this list. A powerful, command driven list controller performs all list operations.
The bit timings for the CAN nodes are derived from the peripheral clock (
programmable up to a data rate of 1 MBaud. A pair of receive and transmit pins connects
each CAN node to a bus transceiver.
Figure 30
Features
•
Data Sheet
Compliant to ISO 11898.
Access Mediator
Controller
Interrupt
Decoder &
Address
Control
control
Clock
Data
Controller Area Network (MultiCAN)
Overview of the MultiCAN
CANSRC[7:0]
f
CAN
A[13: 2]
D[31:0]
Message
Objects
Object
Buffer
32
CAN Control
MultiCAN Module Kernel
Control
Linked
List
101
Node 1
Node 0
CAN
CAN
TXDC1
TXDC0
RXDC1
RXDC0
Functional Description
Control
MultiCAN_XC8_overview
Port
f
XC87xCLM
V1.5, 2011-03
CAN
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