TC9204-DS-R05 datasheet(40/49 Pages) ETC1

40 / 49 page

TC9204M

Preliminary Data Sheet

10.3.14

General Configuration Register

Confidential.

40/49

July 29, 2003

TC9204M-DS-R05

- Address: 4ah

7 6 5 4 3 2 1 0

GeneralC o nfig

AgeTimeR eg

D isAging

F wdBadC R C

F wdU ndersize

RejM CT

RejR D A

not used

Bit(s)

Field

Description

1 – 0

AgeTimeReg

Sets the aging time

DisAging

Disable aging

FwdBadCRC

Forward bad CRC packets

FwdUndersize

Forward undersized packets

RejMCT

Reject MAC Control Type frames

RejRDA

Reject 802.1D Reserved Group Addresses DA frames

not used

AgeTimeReg

Allows 4 values for the aging time to be chosen from.

00 –

300 seconds

01 –

600 seconds

10 –

900 seconds

11 – 1200 seconds

Default is ‘01’(600 seconds).

DisAging

Setting this bit to '1' will cause TC9204M to disable its aging mechanism for the

stored MAC addresses. Default is '0'.

FwdBadCRC

Setting this bit to ‘1’ will enable forwarding of bad CRC packets. Default is '0'.

FwdUndersize

Setting this bit to ‘1’ will enable forwarding of undersized packets. Default is '0'

RejMCT

Setting this bit to ‘1’ will configure the switch to filter all frames with MAC Control

Type (type 8808). Default is ‘0’.

RejRDA

Setting this bit to ‘1’ will configure the switch to filter all frames with 802.1D

Reserved Group Destination Address except for Bridge Group Address

(01-80-C2-00-00-00). Default value is its corresponding RejRDA pin value.

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