This bit is reserved and
always returns ‘0’ when read.
Bit 6 – Reserved
Bit
This bit is reserved and
always returns ‘0’ when read.
Bits 5:0 – DFRP[5:0] Data FIFO Read
Pointer Register
This register gives read and
write access to the data FIFO read pointer (RdPtr). The manipulation of the RdPtr
requires thorough knowledge of the internal functionality of the FIFO. To avoid
unpredictable behavior, the RdPtr must only be changed in IDLEMode. The RdPtr can
have values between 0 and 63. The pointer cycles through these values in a round
robin manner. The difference between WrPtr and RdPtr (WrPtr – RdPtr) must never
exceed 32 because, otherwise, the FIFO will be in an undefined state. This can be
checked by reading the fill level in the DFL.DFFLS register. If the value is larger
than 32, the RdPtr or WrPtr value is invalid. Writing to this register overrides any
other access.
The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.
