Intel Gigabit Ethernet Controllers Benutzerhandbuch
Software Developer’s Manual
365
Register Descriptions
Table 13-143. RDFT Register Bit Description
13.8.3
Receive Data FIFO Head Saved Register
RDFHS (02420h; R/W)
This register stores a copy of the Receive Data FIFO Head register in case the internal register
needs to be restored. This register is available for diagnostic purposes only, and should not be
needs to be restored. This register is available for diagnostic purposes only, and should not be
written during normal operation.
Table 13-144. RDFHS Register Bit Description
13.8.4
Receive Data FIFO Tail Saved Register
RDFTS (02428h; R/W)
This register stores a copy of the Receive Data FIFO Tail register in case the internal register needs
to be restored. This register is available for diagnostic purposes only, and should not be written
to be restored. This register is available for diagnostic purposes only, and should not be written
during normal operation.
31
13 12
0
Reserved
FIFO Tail
Field
Bit(s)
Initial
Value
Value
Description
FIFO Tail
12:0
0b
Receive FIFO Tail pointer.
Reserved
31:13
0b
Reads as 0b. Should be written to 0b for future compatibility.
31
13 12
0
Reserved
FIFO Head
Field
Bit(s)
Initial
Value
Value
Description
FIFO Head
12:0
0b
A “saved” value of the Receive FIFO Head pointer.
Reserved
31:13
0b
Reads as 0b. Should be written to 0b for future compatibility.