TNETX15VE datasheet(35/113 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

new-add aged-del register set

The add/delete register set is used by the state machines (logic operations) to report on stations’ addresses

that have been added, deleted, or involved in port security violations as executed by the internal state machines,

or to request such actions be taken on the specified address on behalf of the host.

The newnode and agednode set of registers send status information from the state machines to the host as a

result of an interrupt. Addnode and delnode registers are host information/actions to be applied to the

TNETX15VE table. The status groups (new, aged) are covered in detail first, followed by the host command

groups (add, delete).

BYTE 3

BYTE 2

BYTE 1

BYTE 0

DIO ADDRESS

AddVLANID

Adddelcontrol

0x2C

Newnode23–Newnode16

Newnode31–Newnode24

Newnode39–Newnode32

Newnode47–Newnode40

0x30

Newport

Newnode7–Newnode0

Newnode15–Newnode8

0x34

Addnode23–Addnode16

Addnode31–Addnode24

Addnode39–Addnode32

Addnode47–Addnode40

0x38

Addport

Addnode7–Addnode0

Addnode15–Addnode8

0x3C

Agednode23–Agednode16

Agednode31–Agednode24

Agednode39–Agednode32

Agednode47–Agednode40

0x40

AgedVLAN

Agedport

Agednode7–Agednode0

Agednode15–Agednode8

0x44

Delnode23–Delnode16

Delnode31–Delnode24

Delnode39–Delnode32

Delnode47–Delnode40

0x48

Delport

DelVLANID

Delnode7–Delnode0

Delnode15–Delnode8

0x4C

new-node/port-change/security-violation interrupt interface at 0x30–0x37 (DIO)

BYTE 3

BYTE 2

BYTE 1

BYTE 0

DIO ADDRESS

Newnode23–Newnode16

Newnode31–Newnode24

Newnode39–Newnode32

Newnode47–Newnode40

0x30

Newport

Newnode7–Newnode0

Newnode15–Newnode8

0x34

The new-node/port-change/security-violation interrupt interface is used with the int and intmask registers to

exchange information relating to a wire event, such as a new source address seen, a source address seen on

a new port, or a source address seen on a port other than the one where it was secured, regardless of the state

of NAUTO. These registers are valid on a NEW, CHNG, or SECVIO interrupt and can be used to find new

addresses when the host processor is managing the address table. These registers are read only and default

to 0 on reset.

When NAUTO = 1, this interface with the NEW interrupt reports an address seen on the wire that is not in the

table. Since the host is managing the table when NAUTO = 1, this could be used by the host to initiate a

management ADD.

To avoid 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 most-significant byte of the newport register is read.

The bit definition follows:

new-address register, newnode at 0x30–0x35 (DIO)

The newnode registers contain the node address (in Ethernet native data format) for which the interrupt was

given. The default value of this register after reset is 0x00.00.00.00.00.00.

TNETX15VE 数据表(PDF) 35 Page - Texas Instruments

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