Technical information

7-85
Register Descriptions
34h Frames Lost due to
Internal Transmit
Errors. (Cannot
recover from FIFO
underrun)
TX R 32 Count the number of frames
which are lost in transmit
engine because it cannot re-
transmit after encountering
FIFO underflow errors.
38h Receive OK Frames MAC
(RX)
M 32 Count the number of frames
successfully received.
3Ch Receive CRC Errors MAC
(RX)
M 32 Count the number of frames
received with CRC errors.
40h Alignment Errors MAC
(RX)
M 32 Count the number of frames
received with dribble nibbles
or dribble bits.
44h Receive OK Octets. MAC
(RX)
R 32 Count the number of octets of
frames successfully received.
48h Pause Frames
Received OK.
MAC
(RX)
R 32 Count the number of Control
frames containing a valid
Pause frame Opcode and a
valid address.
4Ch Control Frames
Received OK.
MAC
(RX)
R 32 Count the number of Control
frames successfully received.
50h Control Frames
Received with
unsupported opcode.
MAC
(RX)
R 32 Count the number of Control
frames successfully received
but with unsupported opcode.
54h Receive Frames Too
Long.
MAC
(RX)
RMON 32 Count the number of received
frames whose length exceeds
maximum allowed length
(1518).
58h Receive Frames Too
Short.
MAC
(RX)
RMON 32 Count the number of received
frames whose length is less
than 64 bytes.
5Ch Receive Frames
Jabbers Error.
MAC
(RX)
RMON 32 Count the number of received
frames whose length exceeds
maximum allowed length
(1518) and had either a CRC
error or alignment error.
60h Receive Frames
Fragments.
MAC
(RX)
RMON 32 Count the number of received
frames whose length is less
than 64 bytes and had a CRC
error or alignment error.
64h Receive Packets 64
Bytes
MAC
(RX)
RMON 32 Count the number of receive
frames whose length is 64
bytes.
68h Receive Packets 65 to
127 Bytes
MAC
(RX)
RMON 32 Count the number of receive
frames whose length is
between 65 and 127 bytes.
Table 7-109. MAC Statistic Register (Continued)
Byte
Addr Statistics Source Priority Bits Descriptions