38.7.32 Rx FIFO 1 Acknowledge

Table 38-49. 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: RXF1A
Offset: 0xB8
Reset: 0x00000000
Property: -

Bit 3130292827262524 
          
Access  
Reset  
Bit 2322212019181716 
          
Access  
Reset  
Bit 15141312111098 
          
Access  
Reset  
Bit 76543210 
   F1AI[5:0] 
Access R/WR/WR/WR/WR/WR/W 
Reset 000000 

Bits 5:0 – F1AI[5:0] Rx FIFO 1 Acknowledge Index

After the Host has read a message or a sequence of messages from Rx FIFO 1 it has to write the buffer index of the last element read from Rx FIFO 1 to F1AI. This will set the Rx FIFO 1 Get Index RXF1S.F1GI bits (RXF1S <13:8>) to F1AI + 1 and update the FIFO 1 Fill Level RXF1S.F1FL bits (RXF1S <6:0>).