11.2.1 CAN Control Register Low

Note:

These bits can only be modified in Configuration mode (OPMOD[2:0] = 100).

Name:	C1CONL
Offset:	0x5C0


Bit	15	14	13	12	11	10	9	8
	CON		SIDL	BRSDIS	BUSY	WFT[1:0]		WAKFIL
Access	R/W		R/W	R/W	R/W	R/W	R/W	R/W
Reset	0		0	0	0	1	1	1


Bit	7	6	5	4	3	2	1	0
	CLKSEL	PXEDIS	ISOCRCEN	DNCNT[4:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	1	1	0	0	0	0	0

Bit 15 – CON CAN Enable bit

Value	Description
`1`	CAN module is enabled.
`0`	CAN module is disabled.

Bit 13 – SIDL CAN Stop in Idle Control bit

Value	Description
`1`	Stops module operation in Idle mode.
`0`	Does not stop module operation in Idle mode.

Bit 12 – BRSDIS Bit Rate Switching (BRS) Disable bit

Value	Description
`1`	Bit rate switching is disabled, regardless of BRS in the transmit message object.
`0`	Bit rate switching depends on BRS in the transmit message object.

Bit 11 – BUSY CAN Module is Busy bit

Value	Description
`1`	The CAN module is active.
`0`	The CAN module is inactive.

Bits 10:9 – WFT[1:0] Selectable Wake-up Filter Time bits

Value	Description
`11`	T11_FILTER
`10`	T10_FILTER
`01`	T01_FILTER
`00`	T00_FILTER

Bit 8 – WAKFIL Enable CAN Bus Line Wake-up Filter bit⁽¹⁾

Value	Description
`1`	Uses CAN bus line filter for wake-up.
`0`	CAN bus line filter is not used for wake-up.

Bit 7 – CLKSEL Module Clock Source Select bit⁽¹⁾

Value	Description
`1`	REFO clock is used as the clock source to the CAN module.
`0`	Clock from the CAN clock generator is used as the clock source to the CAN module.

Bit 6 – PXEDIS Protocol Exception Event Detection Disabled bit⁽¹⁾

A recessive “reserved bit” following a recessive FDF bit is called a Protocol Exception.

Value	Description
`1`	Protocol Exception is treated as a form error.
`0`	If a Protocol Exception is detected, CAN will enter the bus integrating state.

Bit 5 – ISOCRCEN Enable ISO CRC in CAN FD Frames bit⁽¹⁾

Value	Description
`1`	Includes stuff bit count in CRC field and uses non-zero CRC initialization vector.
`0`	Does not include stuff bit count in CRC field and uses CRC initialization vector with all zeros.

Bits 4:0 – DNCNT[4:0] DeviceNet™ Filter Bit Number bits

Value	Description
`10011-11111`	Invalid selection (compares up to 18 bits of data with EID).
`10010`	Compares up to Data Byte 2, bit 6 with EID17.
. . .
`00001`	Compares up to Data Byte 0, bit 7 with EID0.
`00000`	Does not compare data bytes.

DS70005633B

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