參數(shù)資料
型號(hào)： LAN91C100
廠商： SMSC Corporation
英文描述： FEAST⑩ Fast Ethernet Controller
中文描述： 宴⑩快速以太網(wǎng)控制器
文件頁(yè)數(shù)： 25/101頁(yè)
文件大?。?/td> 312K
代理商： LAN91C100
25
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
μ
s window
0.8
μ
s 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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