IP175DLF datasheet(14/145 Pages) ETC

14 / 145 page

IP175DLF

Datasheet

14/145

August 22, 2014

IP175DLF-DS-R10.1

Pin description

(continued)

Pin No.

Label

Type

Description

LED pins used as initial setting (the setting is latched at the end of reset)

112

SERIAL_LED_M

ODE

IPL1

Serial led mode

1: supports link LED only

0: supports link, speed, and duplex LED (default)

When MII/RMII2 is enabled, there are no enough pins for LED

and IP175DLF sends out LED information through pin 111 SCLK

and pin 112 SDATA.

102

BF_STM_EN

IPL1

Broadcast storm protection enable

1: enable

0: disable (default)

A port begins to drop incoming packets if it receives broadcast

packets more than the threshold defined in MII register

20.17~20.19

101

LINK_Q

IPH1

Link quality

1: enable (default)

0: disable

When the function is enabled, besides link on/off status, activity

status, link LED shows link quality. The link LED will be flash (on:

2sec / off: 2sec) when the SNR of received signal is lower than

the desired value for normal operation.

100

X_EN

IPH1

IEEE802.3X/ back pressure enable for PHY 0~4

1: enable (default)

0: disable

097

REDUCE_IPG_D

IPL1

Reduce IPG function

1:disable reduce IPG function

0:enable reduce IPG function(default)

This function reduce the IPG by random from 0~20 PPM

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