LAN91C100 Datasheet, PDF (51/101 Pages) SMSC Corporation – FEAST™ Fast Ethernet Controller

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OFFSET
A
HIGH
BYTE
0
NAME
REVISION REGISTER
0
1
1
TYPE
READ ONLY
SYMBOL
REV
0
0
1
1
LOW
BYTE
CHIP
REV
0
1
1
1
0
0
0
0
CHIP Chip ID. Can be used by software drivers
to identify the device used.
REV Revision ID. Incremented for each
revision of a given device.
CHIP ID VALUE
3
7
DEVICE
LAN91C90/LAN91C92
LAN91C100
OFFSET
C
HIGH
BYTE
0
NAME
EARLY RCV REGISTER
TYPE
READ/WRITE
SYMBOL
ERCV
0
1
1
0
0
1
1
LOW
BYTE
RCV
DISCRD
ERCV THRESHOLD
0
0
0
1
1
1
1
1
RCV DISCRD Set to discard a packet being
received.
ERCV THRESHOLD Threshold for ERCV
interrupt. Specified in 64 byte multiples.
Whenever the number of bytes written in
memory for the presently received packet
exceeds the ERCV THRESHOLD, ERCV INT bit
of the INTERRUPT STATUS REGISTER is set.
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