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AN82527F8

SERIAL COMMUNICATIONS CONTROLLER CONTROLLER AREA NETWORK PROTOCOL

SERIALCOMMUNICATIONSCONTROLLERCONTROLLERAREANETWORKPROTOCOL The82527serialcommunicationscontrollerisahighlyintegrateddevicethatperformsserialcommunicationaccordingtotheCANprotocol.Itperformsallserialcommunicationfunctionssuchastransmissionandreceptionofmessage

AN82527F8

Serial Communications Controller—CAN Protocol; The primary features of the IA82527 are as follows:\n?? CAN Protocol Support\n–? Specification 2.0, Part A and Part B\n–? Standard ID Data and Remote Frames\n–? Extended ID Data and Remote Frames\n?? CAN Bus Interface\n–? Configurable Input Comparator\n–? Configurable Output Driver\n–? Programmable Bit Rate\n?? Global Mask, Programmable\n–? Standard Message Identifier\n–? Extended Message Identifier\n?? Message Objects\n–? 14 Transmit/Receive Buffers\n–? 1 Double Buffered Receive Buffer with Programmable Mask\n?? Flexible Status Interface\n?? CPU Interface Options\n–? 16-Bit Multiplexed Intel Architecture\n–? 8-Bit Multiplexed Intel Architecture\n–? 8-Bit Multiplexed Non-Intel Architecture\n–? 8-Bit Non-Multiplexed Non-Intel Architecture\n–? Serial (SPI)\n?? I/O Ports (2)\n–? 8-Bit\n–? Bidirectional\n?? Flexible Interrupt Structure\n?? Programmable Clock Output;

General Description\nCAN protocol uses a multi-master CSMA/CR (Carrier Sense, Multiple Access with Collision Resolution) bus to transfer message objects between network nodes. The IA82527 support CAN Specification 2.0 Part A and B, standard and extended message frames, and has the capability to transmit, receive, and perform message filtering on standard and extended message frames.\nThe IA82527 can store 15 message objects of 8-byte data length. Each message object can be configured as either transmit or receive except for message object 15, which is receive-only. Message object 15 also provides a special acceptance mask designed to filter message identifiers that are received.\nThe IA82527 also provides a programmable acceptance mask that allows users to globally mask any identifier bits of the incoming message. This global mask can be used for both standard and extended message frames.\nThe IA82527 is capable of operating at 5.0 or 3.3 volts. This datasheet discusses both modes of operation. Where applicable, characteristics specific to either 3.3 or 5.0 volt operation are identified separately throughout this datasheet.\nThe IA82527 is manufactured in a reliable 5-volt process technology and is available in 44-lead PLCC or PQFP RoHS packages for the automotive temperature range (-40°C to 125°C).

AN82527F8

Serial Communications Controller??AN Protocol

AN82527F8-ST111

SERIAL COMMUNICATIONS CONTROLLER CONTROLLER AREA NETWORK PROTOCOL

SERIALCOMMUNICATIONSCONTROLLERCONTROLLERAREANETWORKPROTOCOL The82527serialcommunicationscontrollerisahighlyintegrateddevicethatperformsserialcommunicationaccordingtotheCANprotocol.Itperformsallserialcommunicationfunctionssuchastransmissionandreceptionofmessage

AN82527F8-ST111

SERIAL COMMUNICATIONS CONTROLLER CONTROLLER AREA NETWORK PROTOCOL;

AS82527F8

SerialCommunicationsController??ANProtocol