ST STM32G471 User Manual

RM0440 Rev 4 1961/2126
RM0440 FD controller area network (FDCAN)
2008
Standard message ID filtering
Figure 669 shows the flow for standard Message ID (11-bit Identifier) filtering. The Standard
Message ID filter element is described in Section 44.3.8.
Controlled by the Global Filter Configuration (RXGFC) Message ID, Remote Transmission
Request bit (RTR), and the Identifier Extension bit (IDE) of received frames are compared
against the list of configured filter elements.
Figure 669. Standard Message ID filter path
MS47279V1
Valid frame received
Bit identifier
Remote frame
Receive filter list enabled
Match filter
element #0
Accept
non-matching
frames
Acceptance
or Rejection
Target FIFO full
Append to target FIFO
Match filter
element #RXGFC.LSS
Reject remote frame
Discard frame
11-bit 29-bit
Yes
Yes
Yes
Yes
No
No
No
No
RXGFC[LSS[7:0]] > 0
RXGFC[LSS[7:0]] = 0
RXGFC[RRFS] = 0
RXGFC[RRFS] = 1
RXGFC[ANFS[1]] = 1
RXGFC[ANFS[1]] = 0
No
Yes
Reject
Accept

ST STM32G471 Specifications

General

Brand	ST
Model	STM32G471
Category	Microcontrollers
Language	English