Datasheet

Non-PCI Single-Chip Full Duplex Ethernet Controller with Magic Packet
Datasheet
Revision 1.0 (10-24-08) Page 46 SMSC LAN91C96 5v&3v
DATASHEET
WAKEUP - When this bit is set, it indicates that a receive packet was received that had the “Magic” packet
(MP) signature of the node’s own Individual address repetitions in it. This bit indicates a valid detection for
magic packet.
TX_DEFR - Transmit Deferred. When set, carrier was detected during the first 6.4 uSec of the inter frame
gap. Cleared at the end of every packet sent.
LTX_BRD - Last transmit frame was a broadcast. Set if frame was broadcast. Cleared at the start of every
transmit frame.
SQET - Signal Quality Error Test. The transmitter opens a 1.6 us window 0.8 us 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.
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
 Carrier lost and MON_CSN = 1
 Late collision
I/O SPACE - BANK0
OFFSET NAME TYPE SYMBOL
4 RECEIVE CONTROL REGISTER READ/WRITE RCR
SOFT
RST
FILT
CAR
0 0 0 0 STRIP
CRC
RXEN
0 0 0 0 0 0 0 0
ALMUL PRMS RX_
ABORT
0 0 0 0 0 0 0 0
SOFT_RST - Software activated Reset. Active high. Initiated by writing this bit high and terminated by
writing the bit low. The LAN91C96 configuration is not preserved, except for Configuration, Base, and IA0-
5 Registers. The EEPROM in both LOCAL BUS and PCMCIA mode is not reloaded after software reset.