PIC18F26K80-I Datasheet, PDF (392/622 Pages) Microchip Technology – 28/40/44/64-Pin, Enhanced Flash Microcontrollers with ECAN™ and nanoWatt XLP Technology

PIC18F66K80 FAMILY
FIGURE 27-1:
CAN BUFFERS AND PROTOCOL ENGINE BLOCK DIAGRAM
BUFFERS
16 - 4 to 1 MUXs
TXB0
Message
Queue
Control
TXB1
TXB2
Acceptance Filters
(RXF0-RXF05)
A
MODE 0
c
c
e
p
Acceptance Filters RXF15
t
(RXF06-RXF15)
MODE 1, 2
Transmit Byte Sequencer
Transmit Option
MODE 0
2 RX
Buffers
MODE 1, 2
6 TX/RX
Buffers
Identifier
M
A
Data Field ^B
VCC
Rcv Byte
MESSAGE
BUFFERS
PROTOCOL
ENGINE
Transmit<7:0>
Receive<8:0>
Shift<14:0>
{Transmit<5:0>, Receive<8:0>}
Comparator
CRC<14:0>
Receive
Error
Counter
Transmit
Error
Counter
REC
TEC
Err-Pas
Bus-Off
Protocol
Finite
State
Machine
Transmit
Logic
TX
Bit
Timing
Logic
RX
Clock
Generator
Configuration
Registers
DS39977F-page 392
 2010-2012 Microchip Technology Inc.