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VT8237R Data Sheet
LAN I/O Registers
Offset 05-00 – Ethernet Address ......................................RW
Unless the EEPROM is disabled, the Ethernet Address is
loaded to this register from the EEPROM every time the
system starts up.
Offset 06 – Receive Control (00h) ....................................RW
7-5 Reserved ...................................... Do not program
4
Physical Address Packets Accepted
0 Packets with a physical destination address are
not accepted ...........................................default
1 All packets with a physical destination address
are accepted............................................default
3
Broadcast Packets Accepted
0 Broadcast packets are rejected ...............default
1 Broadcast packets are accepted
2
Multicast Packets Accepted
0 Multicast packets are rejected ................default
1 Multicast packets are accepted
1
Small Packets Accepted
0 Packets smaller than 64 bytes are rejected ...def
1 Packets smaller than 64 bytes are accepted
0
Error Packets Accepted
0 Packets with receive errors are rejected .......def
1 Packets with receive errors are accepted
Revision 2.06 December 15, 2004
-152-
Offset 07 – Transmit Control (08h)................................. RW
7-3 Reserved
......................................Do not program
2-1 Transmit Loopback Mode
00 Normal................................................... default
01 Internal loopback (signal is looped back to the
host from the MAC)
10 MII loopback (signal is looped back to the host
from the PHY)
11 -reserved- (do not program)
0
Reserved
........................................always reads 0
Device 18 Function 0 LAN Registers