Features

PXD10 Product Brief, Rev. 1

Freescale Semiconductor

17

2.4.16

Controller Area Network (CAN) module

The PXD10 contains two CAN modules that offer the following features:

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Compliant with CAN protocol specification, Version 2.0B active

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64 mailboxes, each configurable as transmit or receive

— Mailboxes configurable while module remains synchronized to CAN bus

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Transmit features

— Supports configuration of multiple mailboxes to form message queues of scalable depth

— Arbitration scheme according to message ID or message buffer number

— Internal arbitration to guarantee no inner or outer priority inversion

— Transmit abort procedure and notification

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Receive features

— Individual programmable filters for each mailbox

— 8 mailboxes configurable as a 6-entry receive FIFO

— 8 programmable acceptance filters for receive FIFO

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Programmable clock source

— System clock

— Direct oscillator clock to avoid PLL jitter

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Listen only mode capabilities

•CAN Sampler

— Can catch the first message sent on the CAN network while the PXD10 is stopped. This

guarantees a clean startup of the system without missing messages on the CAN network.

— The CAN sampler is connected to one of the CAN RX pins.

2.4.17

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Two-wire bi-directional serial bus for on-board communications

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Multimaster operation

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Software-programmable for one of 256 different serial clock frequencies

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Software-selectable acknowledge bit

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Interrupt-driven, byte-by-byte data transfer

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Arbitration-lost interrupt with automatic mode switching from master to slave

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Calling address identification interrupt

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Start and stop signal generation/detection

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Repeated START signal generation

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Acknowledge bit generation/detection