XC888LM datasheet(105/144 Pages) INFINEON

105 / 144 page

XC886/888CLM

Functional Description

Data Sheet

V0.9, 2006-12

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CAN functionality according to CAN specification V2.0 B active.

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Dedicated control registers are provided for each CAN node.

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A data transfer rate up to 1 MBaud is supported.

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Flexible and powerful message transfer control and error handling capabilities are

implemented.

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Advanced CAN bus bit timing analysis and baud rate detection can be performed for

each CAN node via the frame counter.

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Full-CAN functionality: A set of 32 message objects can be individually

– allocated (assigned) to any CAN node

– configured as transmit or receive object

– setup to handle frames with 11-bit or 29-bit identifier

– counted or assigned a timestamp via a frame counter

– configured to remote monitoring mode

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Advanced Acceptance Filtering:

– Each message object provides an individual acceptance mask to filter incoming

frames.

– A message object can be configured to accept only standard or only extended

frames or to accept both standard and extended frames.

– Message objects can be grouped into 4 priority classes.

– The selection of the message to be transmitted first can be performed on the basis

of frame identifier, IDE bit and RTR bit according to CAN arbitration rules.

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Advanced Message Object Functionality:

– Message Objects can be combined to build FIFO message buffers of arbitrary

size, which is only limited by the total number of message objects.

– Message objects can be linked to form a gateway to automatically transfer frames

between 2 different CAN buses. A single gateway can link any two CAN nodes. An

arbitrary number of gateways may be defined.

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Advanced Data Management:

– The Message objects are organized in double chained lists.

– List reorganizations may be performed any time, even during full operation of the

CAN nodes.

– A powerful, command driven list controller manages the organization of the list

structure and ensures consistency of the list.

– Message FIFOs are based on the list structure and can easily be scaled in size

during CAN operation.

– Static Allocation Commands offer compatibility with TwinCAN applications, which

are not list based.

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Advanced Interrupt Handling:

– Up to 8 interrupt output lines are available. Most interrupt requests can be

individually routed to one of the 8 interrupt output lines.

– Message postprocessing notifications can be flexibly aggregated into a dedicated

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