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
SymbolDescriptionSymbolDescriptionSymbolDescription
RReadable bitHCCleared by Hardware(Grey cell)Unimplemented
WWritable bitHSSet by HardwareXBit is unknown at Reset
KWrite to clearSSoftware 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
0x0RXF0Accept in Rx FIFO 0.
0x1RXF1Accept in Rx FIFO 1.
0x1xREJECTReject

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
0x0RXF0Accept in Rx FIFO 0.
0x1RXF1Accept in Rx FIFO 1.
0x1xREJECTReject

Bit 1 – RRFS Reject Remote Frames Standard

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

Bit 0 – RRFE Reject Remote Frames Extended

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