SMC91C100 Datasheet, PDF (24/83 Pages) List of Unclassifed Manufacturers – FEAST Fast Ethernet Controller

Set if frame was broadcast. Cleared at the start of
every transmit frame.
SQET Signal Quality Error Test. For 10 Mbps
systems, the transmitter opens a 1.6 µs window
0.8 µs after transmission is completed and the
receiver returns inactive. During this window, the
transmitter expects to see the SQET signal from
the transceiver. The absence of this signal is a
'Signal Quality Error' and is reported in this status
bit. Transmission stops and EPH INT is set if
STP_SQET is in the TCR is also set when SQET
is set. This bit is cleared by setting TXENA high.
The behavior of this bit for 100 Mbps is presently
undefined.
16COL 16 collisions reached. Set when 16
collisions are detected for a transmit frame.
TXENA bit in TCR is reset. Cleared when TXENA
is set high.
LTX_MULT Last transmit frame was a multicast.
Set if frame was a multicast. Cleared at the start
of every transmit frame.
MULCOL Multiple collision detected for the last
transmit frame. Set when more than one collision
was experienced. Cleared when TX_SUC is high
at the end of the packet being sent.
SNGLCOL Single collision detected for the last
transmit frame. Set when a collision is detected.
Cleared when TX_SUC is high at the end of the
packet being sent.
TX_SUC Last transmit was successful. Set if
transmit completes without a fatal error. This bit is
cleared by the start of a new frame transmission or
when TXENA is set high. Fatal errors are:
16 collisions
SQET fail and STP_SQET = 1
FIFO Underrun
Carrier lost and MON_CSN = 1
Late collision
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