SMC Networks SMC91C95 Product Manual page 44

I/O SPACE - BANK0
OFFSET
4 RECEIVE CONTROL
HIGH SOFT_
BYTE RST
0
LOW
BYTE
0
SOFT_RST - Software activated Reset. Active
high. Initiated by writing this bit high and
terminated by writing the bit low. The SMC91C95
configuration is not preserved,
Configuration, Base, and IA0-IA5 Registers. The
EEPROM in both ISA and PCMCIA mode is not
reloaded after software reset.
FILT_CAR - Filter Carrier. When set filters leading
edge of carrier sense for 12 bit times. Otherwise
recognizes a receive frame as soon as carrier
sense is active.
STRIP_CRC - When set it strips the CRC on
received frames. When clear the CRC is stored in
memory following the packet. Defaults low.
Packet Too Long
Run out of Memory
During Receive
NAME
REGISTER
FILT_
0 0
CAR
0 0 0
0 0 0
except for
RX_ABORT
1
1
44
TYPE
READ/WRITE
0 0
0 0
ALMUL
0 0
RXEN - Enables the receiver when set. If cleared,
completes receiving current frame and then goes
idle. Defaults low on reset.
ALMUL - When set accepts all multicast frames
(frames in which the first bit of DA is '1'). When
clear accepts only the multicast frames that match
the multicast table setting. Defaults low.
PRMS - Promiscuous mode. When set receives all
frames. Does not receive its own transmission
unless it is in full duplex.
RX_ABORT - This bit is set if a receive frame is
aborted due to length longer than 1532 bytes. The
frame will not be received. The bit is cleared by
RESET or by the CPU writing it low.
RX_OVRN_INT
0
1
SYMBOL
RCR
STRIP_
RXEN
CRC
0 0
RX_
PRMS
ABORT
0 0