336 The Essential Guide to Serial ATA and SATA Express
R_ERR frame handshakes in the command ending status for Data FISes reflected in the transmitted
register FIS that conveys the operation ending status. The Transport layer also reflects any error infor-
mation encountered in the Interface Error register.
The Transport may retry any non-Data FIS transmission, provided the system state has not changed
as a result of the corresponding failure, and may retry any number of times. For scenarios in which
repeated retry operations persistently fail, the host software will time out the corresponding command
and perform recovery operations.
Error Detection
In addition to the error information passed to it by the Link layer, the Transport layer interna ...