Microchip Technology dsPIC33 series User Manual

 2018 Microchip Technology Inc. DS70005340A-page 29
CAN FD Protocol Module
Register 3-29: C1TXQCONH: CAN Transmit Queue Control Register High
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
PLSIZE2
(1)
PLSIZE1
(1)
PLSIZE0
(1)
FSIZE4
(1)
FSIZE3
(1)
FSIZE2
(1)
FSIZE1
(1)
FSIZE0
(1)
bit 15 bit 8
U-0 R/W-1 R/W-1 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
— TXAT1 TXAT0 TXPRI4 TXPRI3 TXPRI2 TXPRI1 TXPRI0
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 15-13 PLSIZE<2:0>: Payload Size bits
(1)
111 = 64 data bytes
110 = 48 data bytes
101 = 32 data bytes
100 = 24 data bytes
011 = 20 data bytes
010 = 16 data bytes
001 = 12 data bytes
000 = 8 data bytes
bit 12-8 FSIZE<4:0>: FIFO Size bits
(1)
11111 = FIFO is 32 messages deep
...
00010 = FIFO is 3 messages deep
00001 = FIFO is 2 messages deep
00000 = FIFO is 1 message deep
bit 7 Unimplemented: Read as ‘0’
bit 6-5 TXAT<1:0>: Retransmission Attempts bits
This feature is enabled when RTXAT (C1CONH<0>) is set.
11 = Unlimited number of retransmission attempts
10 = Unlimited number of retransmission attempts
01 = Three retransmission attempts
00 = Disable retransmission attempts
bit 4-0 TXPRI<4:0>: Message Transmit Priority bits
11111 = Highest message priority
...
00000 = Lowest message priority
Note 1: These bits can only be modified in Configuration mode (OPMOD<2:0> = 100).

Microchip Technology dsPIC33 series Specifications

General

Brand	Microchip Technology
Model	dsPIC33 series
Category	Motherboard
Language	English