Datasheet

 2015 Microchip Technology Inc. Preliminary DS60001320B-page 487
PIC32MZ Embedded Connectivity with Floating Point Unit (EF) Family
29.0 CONTROLLER AREA
NETWORK (CAN)
The Controller Area Network (CAN) module supports
the following key features:
• Standards Compliance:
- Full CAN 2.0B compliance
- Programmable bit rate up to 1 Mbps
• Message Reception and Transmission:
- 32 message FIFOs
- Each FIFO can have up to 32 messages for a
total of 1024 messages
- FIFO can be a transmit message FIFO or a
receive message FIFO
- User-defined priority levels for message
FIFOs used for transmission
- 32 acceptance filters for message filtering
- Four acceptance filter mask registers for
message filtering
- Automatic response to remote transmit request
- DeviceNet™ addressing support
• Additional Features:
- Loopback, Listen All Messages and Listen
Only modes for self-test, system diagnostics
and bus monitoring
- Low-power operating modes
- CAN module is a bus master on the PIC32
System Bus
- Use of DMA is not required
- Dedicated time-stamp timer
- Dedicated DMA channels
- Data-only Message Reception mode
Figure 29-1 illustrates the general structure of the CAN
module.
FIGURE 29-1: PIC32 CAN MODULE BLOCK DIAGRAM
Note: This data sheet summarizes the
features of the PIC32MZ EF family of
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to Section 34. “Controller
Area Network (CAN)” (DS60001154) in
the “PIC32 Family Reference Manual”,
which is available from the Microchip
web site (
www.microchip.com/PIC32).
Message Buffer 31
Message Buffer 1
Message Buffer 0
Message Buffer 31
Message Buffer 1
Message Buffer 0
Message Buffer 31
Message Buffer 1
Message Buffer 0
FIFO0 FIFO1 FIFO31
System RAM
Up to 32 Message Buffers
CAN Message FIFO (up to 32 FIFOs)
Message
Buffer Size
2 or 4 Words
System Bus
CPU
CAN Module
32 Filters
4 Masks
CxTX
CxRX
PBCLK5
(‘x’ = 1-2)