KSZ9567R datasheet(84/233 Pages) MICROCHIP

84 / 233 page

KSZ9567R

DS00002329E-page 84

 2022 Microchip Technology Inc. and its subsidiaries

5.1.4.11

Switch Lookup Engine Control 0 Register

Address:

0x0310

Size:

8 bits

Bits

Description

Type

Default

802.1Q VLAN Enable

This is the master enable for VLAN forwarding and filtering. Note that the

VLAN Table must be set up before VLAN mode is enabled.

1 = VLAN mode enabled

0 = VLAN mode disabled

R/W

Drop Invalid VID

1 = All received packets with invalid VLAN ID are dropped.

0 = Received packets with invalid VLAN ID are forwarded to the host port.

Note that the Unknown VID Forwarding feature (Unknown VLAN ID Control

R/W

5:3

Age Count

This bit, in combination with the Age Period value (Switch Lookup Engine

Control 3 Register), determines the aging time of dynamic entries in the

address lookup table. This value is used for the Age Count field whenever a

dynamic table entry is updated.

R/W

10_0b

Reserved Multicast Lookup Enable

1 = Enable Reserved Multicast Table

0 = Disable Reserved Multicast Table

R/W

1:0

HASH_OPTION

Defines the hashing option for mapping entries to the dynamic lookup table.

00, 11 = Entry is mapped directly using the 10 least significant bits of the

destination address.

01 = The CRC hashing function is used.

10 = The XOR hashing function is used.

Refer to Section 4.4.2.1, "Address Lookup (ALU) Table," on page 29 for

additional information.

R/W

01b

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