Datasheet

Non-PCI Single-Chip Full Duplex Ethernet Controller with Magic Packet
Datasheet
Revision 1.0 (10-24-08) Page 64 SMSC LAN91C96 5v&3v
DATASHEET
I/O SPACE - BANK3
OFFSET NAME TYPE SYMBOL
C RCV REGISTER READ/WRITE RCV
RCV COUNTER
0 0 1 1 0 0 1 1
RCV
DISCRD
MBO MBO MBO MBO MBO
0 0 0 1 1 1 1 1
RCV DISCRD - Set to discard a packet being received.
MBO – Must be 1.
Rcv Counter - This 8 bit value is the “Real Time” count, in bytes, of the current Receive packet (this
includes the 4 bytes of status and packet length). The count is rounded to the nearest Nibble (16 bytes).
The Counter is multiplied by 16 decimals to obtain the number of bytes currently received.
Note: The value of the RCV Counter is in real time asynchronous format (i.e. The value is constantly changing).
It is recommended that the register be read multiple times to get an accurate reading. Note: The Rcv
Counter register will return a value of “0” when no receive event is occurring.