38.7.19 Global Filter Configuration

This register is write-restricted and only writable if bit fields CCCR.CCE bit (CCCR <1>) = 1 and CCCR.INIT bit (CCCR <0>) = 1.
Table 38-36. Register Bit Attribute Legend
Symbol Description Symbol Description Symbol Description
R Readable bit HC Cleared by Hardware (Grey cell) Unimplemented
W Writable bit HS Set by Hardware X Bit is unknown at Reset
K Write to clear S Software settable bit — —
Name: GFC
Offset: 0x80
Reset: 0x00000000
Property: Write-restricted

Bit 3130292827262524 
          
Access  
Reset  
Bit 2322212019181716 
          
Access  
Reset  
Bit 15141312111098 
          
Access  
Reset  
Bit 76543210 
   ANFS[1:0]ANFE[1:0]RRFSRRFE 
Access R/WR/WR/WR/WR/WR/W 
Reset 000000 

Bits 5:4 – ANFS[1:0] Accept Non-matching Frames Standard

Defines how received messages with 11-bit IDs that do not match any element of the filter list are treated.
ValueNameDescription
0x0 RXF0 Accept in Rx FIFO 0.
0x1 RXF1 Accept in Rx FIFO 1.
0x1x REJECT Reject

Bits 3:2 – ANFE[1:0] Accept Non-matching Frames Extended

Defines how received messages with 29-bit IDs that do not match any element of the filter list are treated.
ValueNameDescription
0x0 RXF0 Accept in Rx FIFO 0.
0x1 RXF1 Accept in Rx FIFO 1.
0x1x REJECT Reject

Bit 1 – RRFS Reject Remote Frames Standard

ValueDescription
0 Filter remote frames with 11-bit standard IDs.
1 Reject all remote frames with 11-bit standard IDs.

Bit 0 – RRFE Reject Remote Frames Extended

ValueDescription
0 Filter remote frames with 29-bit extended IDs.
1 Reject all remote frames with 29-bit extended IDS.