TNETX15VE datasheet(37/113 Pages) TI1

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TNETX15VE

VLAN-ENGINE ADDRESS-LOOKUP DEVICE

SPWS028B – APRIL 1997 – REVISED SEPTEMBER 1997

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

agednode interrupt interface group at 0x40–0x46 (DIO)

BYTE 3

BYTE 2

BYTE 1

BYTE 0

DIO ADDRESS

Agednode23–Agednode16

Agednode31–Agednode24

Agednode39–Agednode32

Agednode47–Agednode40

0x40

AgedVLAN

Agedport

Agednode7–Agednode0

Agednode15–Agednode8

0x44

The agednode interrupt interface is used with the int and intmask registers to pass information to the

management agent about addresses that have been deleted from the lookup table due to the internal aging

process. The information placed in these registers is written in Ethernet native data format and is only valid when

the AGE bit in the int register is set to a 1. These registers are read only and default to 0 after reset.

To prevent the data in these registers from being changed if another interrupt occurs while reading the current

data, the data in these registers is locked until the agedVLAN register is read.

aged-address register, agednode at 0x40–0x45 (DIO)

On an age interrupt, the agednode registers contain the address of the node that has been aged out from the

lookup table. This is a read-only register and defaults to 0x00.00.00.00.00.00 after reset. A different interrupt

is issued if this information remains unread long enough that another node is aged out before the agednode

registers are released.

aged-address port assignment, agedport at 0x46 (DIO), byte 2

BIT

Reserved

PORTCODE

Initial Values After Reset

BIT

NAME

FUNCTION

7–4

Reserved

Writes to this location are ignored and read as 0.

3–0

PORTCODE

Agednode’s port assignment. PORTCODE displays the assigned port for the aged-out address contained

in the agednode register.

aged-address VLAN assignment, agedVLAN at 0x47 (DIO), byte 3

BIT

Reserved

VLANDID

Initial Values After Reset

BIT

NAME

FUNCTION

7–4

Reserved

Writes to this location are ignored and read as 0.

3–0

VLANID

Agednode’s VLAN assignment. VLANID displays the assigned VLANID for the address contained in the

agednode register.

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