3.6.2.2.1 SFC – Support FIFO Configuration Register

Name: SFC
Offset: 0x0E1
Reset: 0x00

Bit 76543210 
 SFDRASFFLC[4:0] 
Access R/WRRR/WR/WR/WR/WR/W 
Reset 00000000 

Bit 7 – SFDRA Support FIFO Direct Read Access Operational Mode

This bit defines the operational mode of the support FIFO.
SFDRADescription
0Direct write access: The FIFO is configured for data reception and serves as RSSI value storage. The AVR® can only read from the FIFO. Write access is allowed via the direct write access interface from the RSSI buffer.
1Direct read access: The FIFO is configured for data transmission. The AVR can only write to the FIFO. Read access is allowed via the direct read access interface from the TX modulator.

Bit 6 –  Reserved Bit

This bit is reserved and always returns ‘0’ when read.

Bit 5 –  Reserved Bit

This bit is reserved and always returns ‘0’ when read.

Bits 4:0 – SFFLC[4:0] Support FIFO Fill Level Configuration

The SFFLC bits define the required fill level for setting the SFS.SFFLRF status flag and triggering an interrupt. Precise conditions for this event are described at the SFS.SFFLRF bit. Valid SFFLC values are 0..16. Values exceeding this do not set the status flag or trigger an interrupt.