Table 398. Extended Message Id Filter Element; Table 399. Extended Message Id Filter Element Field Description - ST STM32G4 Series Reference Manual

FD controller area network (FDCAN)
Table 397. Standard Message ID Filter element Field description (continued)
Field
Bits 26:16
SFID1[10:0]
Bits 10:0
SFID2[10:0]
1. With SFT = 11 the filter element is disabled and the acceptance filtering continues (same behavior as with
SFEC = 000).
Note: In case a reserved value is configured, the filter element is considered disabled.
43.3.9 FDCAN Extended message ID filter element
Up to 8 filters element can be configured for 29-bit extended IDs. When accessing an
Extended Message ID Filter element, its address is the Filter List Extended Start Address
FLESA plus two times the index of the filter element (0 ... 7).
Bit 31
F0
F1
Field
F0 Bits 31:29
EFEC[2:0]
F0 Bits 28:0
EFID1[28:0]
1930/2083
Standard filter ID 1
First ID of standard ID filter element.
Standard filter ID 2
Second ID of standard ID filter element.

Table 398. Extended Message ID Filter element

EFEC[2:0]
EFTI[1:0] Res.

Table 399. Extended Message ID Filter element field description

Extended filter element configuration
All enabled filter elements are used for acceptance filtering of extended frames.
Acceptance filtering stops at the first matching enabled filter element or when the end
of the filter list is reached. If EFEC = 100, 101 or 110 a match sets interrupt flag
IR[HPM] and, if enabled, an interrupt is generated. In this case register HPMS is
updated with the status of the priority match.
– 000: Disable filter element
– 001: Store in Rx FIFO 0 if filter matches
– 010: Store in Rx FIFO 1 if filter matches
– 011: Reject ID if filter matches
– 100: Set priority if filter matches
– 101: Set priority and store in FIFO 0 if filter matches
– 110: Set priority and store in FIFO 1 if filter matches
– 111: Not used
Extended filter ID 1
First ID of extended ID filter element.
When filtering for Rx FIFO, this field defines the ID of an extended message to be
stored. The received identifiers must match exactly, only XIDAM masking
mechanism.
Description
24 23
Description
RM0440 Rev 1
16 15
EFID1[28:0]
EFID2[28:0]
RM0440
8 7 0