Ethernet Subsystem Registers
Table 14-26. CONTROL Register Field Descriptions (continued)
Bit
Field
Type
Reset
Description
3
RATE_LIMIT_TX
R/W-0
0
Rate Limit Transmit mode -
0 - Broadcast and multicast rate limit counters are received port
based
1 - Broadcast and multicast rate limit counters are transmit port
based.
2
VLAN_AWARE
R/W-0
0
ALE VLAN Aware - Determines what is done if VLAN not found.
0 - Flood if VLAN not found
1 - Drop packet if VLAN not found
1
ENABLE_AUTH_MODE
R/W-0
0
Enable MAC Authorization Mode - Mac authorization mode requires
that all table entries be made by the host software.
There are no learned address in authorization mode and the packet
will be dropped if the source address is not found (and the
destination address is not a multicast address with the super table
entry bit set).
0 - The ALE is not in MAC authorization mode
1 - The ALE is in MAC authorization mode
0
ENABLE_RATE_LIMIT
R/W-0
0
Enable Broadcast and Multicast Rate Limit
0 - Broadcast/Multicast rates not limited
1 - Broadcast/Multicast packet reception limited to the port control
register rate limit fields.
1243
SPRUH73H – October 2011 – Revised April 2013
Ethernet Subsystem
Copyright © 2011–2013, Texas Instruments Incorporated