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Registers
3.3.2.50.11 Filtered Receive Frames Register (RXFILTERED)
The total number of frames received on the EMAC that the EMAC address matching process indicated
should be discarded. Such a frame is defined as having all of the following:
•
Was any data frame (not MAC control frame) destined for any unicast, broadcast, or multicast
address
•
Did not experience any CRC error, alignment error, code error
•
The address matching process decided that the frame should be discarded (filtered) because it did
not match the unicast, broadcast, or multicast address, and it did not match due to promiscuous
mode.
To determine the number of receive frames discarded by the EMAC for any reason, sum the following
statistics (promiscuous mode disabled):
•
Receive fragments
•
Receive undersized frames
•
Receive CRC errors
•
Receive alignment/code errors
•
Receive jabbers
•
Receive overruns
•
Receive filtered frames
This may not be an exact count because the receive overruns statistic is independent of the other
statistics, so if an overrun occurs at the same time as one of the other discard reasons, then the above
sum double-counts that frame.
3.3.2.50.12 Receive QOS Filtered Frames Register (RXQOSFILTERED)
The total number of frames received on the EMAC that were filtered due to receive quality of service
(QOS) filtering. Such a frame is defined as having all of the following:
•
Any data or MAC control frame that matched a unicast, broadcast, or multicast address, or matched
due to promiscuous mode
•
The frame destination channel flow control threshold register (RXnFLOWTHRESH) value was
greater than or equal to the channel's corresponding free buffer register (RXnFREEBUFFER) value
•
Was of length 64 to RXMAXLEN
•
RXQOSEN bit is set in RXMBPENABLE
•
Had no CRC error, alignment error, or code error
See
Section 3.2.5.5
statistic.
3.3.2.50.13 Receive Octet Frames Register (RXOCTETS)
The total number of bytes in all good frames received on the EMAC. A good frame is defined as having
all of the following:
•
Any data or MAC control frame that matched a unicast, broadcast, or multicast address, or matched
due to promiscuous mode
•
Was of length 64 to RXMAXLEN bytes inclusive
•
Had no CRC error, alignment error, or code error
See
Section 3.2.5.5
statistic.
508
EMAC/MDIO Module
Preliminary
for definitions of alignment, code, and CRC errors. Overruns have no effect on this
for definitions of alignment, code, and CRC errors. Overruns have no effect on this
© 2011, Texas Instruments Incorporated
www.ti.com
SPRUGX9 – 15 April 2011
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