TNETX3150A datasheet(29/78 Pages) TI

29 / 78 page

TNETX15AE

ADDRESS-LOOKUP DEVICE

SPWS041A – AUGUST 1997 – REVISED OCTOBER 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

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

TNETX15AE 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

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

Agedport

Agednode7–Agednode0

Agednode15–Agednode8

0x44

Delnode23–Delnode16

Delnode31–Delnode24

Delnode39–Delnode32

Delnode47–Delnode40

0x48

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 new addresses being added or modified in the lookup table following a wire

event. This means a new source address was seen, a source address was seen on a new port, or a source

address was seen on a port other than the one where it was secured, regardless of the state of the NAUTO bit

in the control register. These registers are valid on a NEW, CHNG, or SECVIO interrupt. These registers are

read only and default to 0 on reset. With NAUTO = 0, a new address is already added to the table. With

NAUTO = 1, the host CPU gets notification of a new address via these registers and must perform the 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.

TNETX3150A 数据表(PDF) 29 Page - Texas Instruments

TNETX3150A 数据表(HTML) 29 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78

数据表下载