TNETX15VE datasheet(41/113 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

management delete address interface group at 0x2C, 0x48–0x4F (DIO)

BYTE 3

BYTE 2

BYTE 1

BYTE 0

DIO ADDRESS

Adddelcontrol

0x2C

0x30

0x34

0x38

0x3C

0x40

0x44

Delnode23–Delnode16

Delnode31–Delnode24

Delnode39–Delnode32

Delnode47–Delnode40

0x48

Delport

DelVLANID

Delnode7–Delnode0

Delnode15–Delnode8

0x4C

The management delete address interface is used with the DEL bit in the adddelcontrol register to perform

management deletions from the lookup table.

lookup table add/delete command register, adddelcontrol at 0x2C (DIO), byte 0

BYTE 0

BIT

Reserved

DELP

DELV

ADD

DEL

Initial Values After Reset

BIT

NAME

FUNCTION

7–4

Reserved

Writes to this location are ignored and are read as 0.

DELP

Delete all addresses on port. When DELP is asserted, the TNETX15VE deletes all addresses whose port

assignment matches the delport register. DELP remains asserted until the delete process is complete. A

DELP operation does not delete multicast addresses or addresses that have been marked as secure. This

bit can be asserted at the same time as the DELV bit but not if the DELV bit is previously set ( writing a 0x0C

is permitted, but not 0x08 if the DELV bit is previously a 1). Asserting both bits kills all addresses that meet

both conditions.

DELV

Delete all addresses on VLAN. When DELV is asserted, the TNETX15VE deletes all addresses whose

VLAN assignment matches the delVLANID register. DELV remains asserted until the delete process is

complete. A DELV operation does not delete multicast addresses or addresses that have been marked as

secure. This bit can be asserted at the same time as the DELP bit but not if the DELP bit is previously set

(writing a 0x0C is permitted, but not 0x04 if the DELV bit is previously a 1). Asserting both bits kills all

addresses that meet both conditions.

ADD

See the add process bit under

lookup table add/delete command register

DEL

Address delete. When DEL is asserted, the TNETX15VE uses the information contained in the

management delete address interface to delete an address from the lookup table. DEL remains asserted

until the delete process is complete.

TNETX15VE 数据表(PDF) 41 Page - Texas Instruments

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