I/O SPACE - BANK3
OFFSET
NAME
TYPE
SYMBOL
REV
A
REVISION REGISTER
READ ONLY
HIGH
BYTE
0
0
1
1
1
1
0
0
1
0
1
LOW
BYTE
CHIP
REV
0
1
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
DEVICE
3
7
LAN91C90/LAN91C92
LAN91C100
OFFSET
C
NAME
EARLY RCV REGISTER
TYPE
SYMBOL
ERCV
READ/WRITE
HIGH
BYTE
0
0
0
1
1
1
0
1
0
1
1
1
LOW
BYTE
RCV
DISCRD
ERCV THRESHOLD
1
0
0
1
RCV DISCRD Set to discard a packet being
received.
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.
ERCV THRESHOLD
Threshold for ERCV
interrupt. Specified in 64 byte multiples.
51
SMSC [ SMSC CORPORATION ]
