ADM6308 Просмотр технического описания (PDF) - Unspecified

Номер в каталоге

Компоненты Описание

производитель

ADM6308

Eight-port 10/100M Ethernet Switch Controller

Unspecified 

Olive plus Specification

8

EEPROM Content

The EEPROM setting must be in 16-bit mode.

Offset

00H

01H

02H

Content

Check Pattern

System Configuration

Description

Must be set to 017C

Bit 3~0 – Inter Frame Gap in half-duplex mode only. Default is zero (96 bit-

time). Bit 3 is a sign bit. When bit 3 is zero, it means negative. Bit 0

~ 2 present decimal value of bit time (times four). For example,

1010, the IFG is equal to 96 + 2 X 4 = 104.

Bit 7~4 – Configurable aging time. Default is 300 sec. When bit 7 is one, fast

aging time (15 sec) is set. If all zero, aging timer is disabled. For the

other value, list below.

bit 7 bit 6 bit 5 bit 4

0 0 0 1 Aging time is 300 sec (Default)

0 0 1 0 Aging time is 600 sec

0 0 1 1 Aging time is 1200 sec

0 1 0 0 Aging time is 2400 sec

0 1 0 1 Aging time is 4800 sec

0 1 1 0 Aging time is 9600 sec

0 1 1 1 Aging time is 38400 sec

Bit 9~ 8 – Broadcast storming mode. This mode is only for broadcast destination

address, FF FF FF FF FF FF.

bit 9 bit 8

0

0

Disable (Default)

0

1

256 blocks

1

0

192 blocks

1

1

128 blocks

Bit 11 ~ 10 – Maximum Length of the data field of frame format.

Bit 11 bit 10

0

0

Maximum length is 1536 bytes (Default)

0

1

Maximum length is 1518 bytes

1

0

Maximum length is 1522 bytes

1

1

Reserved

Bit 12 – Continuous 16-time collision abort per packet is enabled if set to zero.

Default is zero. EEPROM setting has higher priority than pin’s.

Bit 13 – Hashing algorithm selection. If zero, direct mapping algorithm is

selected. Otherwise, CRC hashing algorithm is adopted. Default is

zero.

Bit 14 – Over written address. Default is zero, which means over written address

is not allowed whenever the same addresses entry condition occurred

after hashing algorithm implementation finished.

Bit 15 - Must be set to zero.

Back Pressure and Back- Bit 2 ~ 0 - Must be “ 0 0 1 ”.

off

Bit 6 ~ 4 - Must be “ 1 0 1 “.

Bit 11 ~ 8 –Jam number for BP algorithm 1

Bit 13 ~ 12 – BP mode

00 : disable BP

01 : BP jam

10 : BP jam ALL

ADMtek Incorporated

00/04/25

1F, No 9, Industrial E. 9th Road, SBIP, Hsin-Chu

Version : 1.10

Tel : (03)578-8879 Fax : (03)578-8871

ADMtek Incorporated Confidential

Share Link: