Microchip PIC32MK0512GPK100 Handleiding
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PIC32MK0512GPK100
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© 2018 Microchip Technology Inc. Preliminary DS60001549A-page 56-1
Section 56. Controller Area Network with
Flexible Data-rate (CAN FD)
This section of the manual contains the following major topics:
56.1 Introduction .................................................................................................................. 56-2
56.2 CAN FD Message Frames........................................................................................... 56-5
56.3 Control Registers ......................................................................................................... 56-9
56.4 Modes of Operation ................................................................................................... 56-74
56.5 Configuration..............................................................................................................56-80
56.6 Message Transmission .............................................................................................. 56-89
56.7 Transmit Event FIFO – TEF ....................................................................................... 56-98
56.8 Message Filtering..................................................................................................... 56-105
56.9 Message Reception ................................................................................................. 56-110
56.10 FIFO Behavior.......................................................................................................... 56-117
56.11 Timestamping........................................................................................................... 56-129
56.12 Interrupts.................................................................................................................. 56-130
56.13 Error Handling.......................................................................................................... 56-137
56.14 Related Application Notes........................................................................................ 56-139
56.15 Revision History ....................................................................................................... 56-140
PIC32 Family Reference Manual
DS60001549A-page 56-2 Preliminary © 2018 Microchip Technology Inc.
56.1 INTRODUCTION
CAN Flexible Data-Rate (FD) addresses the increasing demand for bandwidth on CAN buses.
The two enhancements over CAN 2.0B are consists of the following:
• Increased data field up to 64 data bytes (currently 8 bytes)
• Option to switch to faster bit rate after the arbitration field
Figure 56-1 shows the possible increase in net bit rate due to higher Data Bit Rate (DBR) and
increased data bytes per frame (© Robert Bosch GmbH).
Figure 56-1: Net CAN FD Bit Rate
The CAN FD protocol is defined to allow CAN 2.0 and CAN FD messages to co-exist on the
same bus. This does not imply that non CAN FD controllers can be mixed with CAN FD control-
lers on the same bus. Non CAN FD controllers will generate error frames while receiving a CAN
FD message.
Note: This family reference manual section is meant to serve as a complement to device
data sheets. Depending on the device variant, this manual section may not apply to
all PIC32 devices.
Please consult the note at the beginning of the “Controller Area Network with
Flexible Data-rate (CAN FD)” chapter in the current device data sheet to
determine whether this document supports the device you are using.
Device data sheets and family reference manual sections are available for
download from the Microchip Web site at: http://www.microchip.com
Frame ID: 11-Bit, Bit Rate Arbitration: 1 Mbit
Product specificaties
| Merk: | Microchip |
| Categorie: | Niet gecategoriseerd |
| Model: | PIC32MK0512GPK100 |
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