Intel PCI, PCI-X, Intel Gigabit Ethernet Controllers 13.7.34 Receive Undersize Count, 13.7.35 Receive Fragment Count

Software Developer’s Manual 353
Register Descriptions
This register does not increment when flow control packets are received.
Table 13-125. RNBC Register Bit Description
13.7.34 Receive Undersize Count
RUC (040A4h; R)
This register counts the number of received frames that passed address filtering, and were less than
minimum size (64 bytes from <Destination Address> through <CRC>, inclusively), and had a
valid CRC. This register only increments if receives are enabled.
Table 13-126. RUC Register Bit Description
13.7.35 Receive Fragment Count
RFC (040A8h; R)
This register counts the number of received frames that passed address filtering, and were less than
minimum size (64 bytes from <Destination Address> through <CRC>, inclusively), but had a bad
CRC (this is slightly different from the Receive Undersize Count register). This register only
increments if receives are enabled.
31 0
RNBC
Field Bit(s) Initial
Value Description
RNBC 31:0 0b Number of receive no buffer conditions.
31 0
RUC
Field Bit(s) Initial
Value Description
RUC 31:0 0b Number of receive undersize errors.