
MVTX2602
Data Sheet
80
Zarlink Semiconductor Inc.
13.5 Group 4 Address Search Engine Group
13.5.1 AGETIME_LOW – MAC address aging time Low
I2C Address h0A8; CPU Address:h400
Accessed by CPU, serial interface and I2C (R/W)
The MVTX2602 removes the MAC address from the data base and sends a Delete MAC Address Control
Command to the CPU. MAC address aging is enable/disable by boot strap TSTOUT9.
Bit [7:0] Low byte of the MAC address aging timer.
13.5.2 AGETIME_HIGH –MAC address aging time High
I2C Address h0A9; CPU Address h401
Accessed by CPU, serial interface and I2C (R/W)
Bit [7:0]: High byte of the MAC address aging timer.
The default setting provide 300 seconds aging time. Aging time is based on the following equation:
{AGETIME_HIGH,AGETIME_LOW} X (# of MAC entries in the memory X 100 μsec). Number of MAC entries =
32 K when 1 MB is used. Number of entries = 64 K when 2 MB is used.
13.5.3 V_AGETIME – VLAN to Port aging time
CPU Address h402
Accessed by CPU (R/W)
Bit [7:0] (Default FF) V_AGETIME X 256 X 100 msec is the age time for the VLAN. This timer is for controlling how
long a port is associated to a particular VLAN. It can use dynamic shrinking of a VLAN domain if no packet arrives
for the VLAN. The 2600 does not remove the port from the VLAN domain. It sends an Age VLAN Port Control
Command to the CPU. The CPU has to remove the port.
13.5.4 SE_OPMODE – Search Engine Operation Mode
CPU Address:h403
Accessed by CPU (R/W)
Note:
ECR2[2] enable/disable learning for each port.
7
6
5
4
3
2
1
0
SL
DMS
ARP
DRA
DA
DRD
DRN
FL