W5300 datasheet(20/128 Pages) WIZNET

20 / 128 page

1.6 Network Indicator LED Signals

The signals except for LINKLED, are used as multi-function PIN according to the configuration

of TEST_MODE[3:0]. When using those signals as network indicator signals, internal PHY

mode(TEST

_MODE[3:0]=”0000”) should be configured.

Symbol

Type

Description

LINKLED

Link LED

It indicates the link status of media(10/100M).

<Notice> When /RESET is low, LINKLED goes to low (i.e. turn

off). But in case that the

“Internal PHY operation control mode”

is configured as

“Manual selection of 100 BASE-TX

FDX/HDX

” (OP_MODE[2:0] = “1xx”), LINKLED stays at the

previous link status before /RESET is low.

After /RESET goes to high, then it indicates the link status of

media(10/100M) properly.

/TXLED(MII_TXEN)

OML

Transmit activity LED/Transmit Enable

It notifies the output of transmit data through TXOP/TXON

(Transmit Activity).

/RXLED(MII_TXD3)

OML

Receive activity LED/Transmit Data

It notifies the input of receive data from RXIP/RXIN (Receive

Activity)

cf> By binding /TXLED and /

RXLED signals with ‘AND’ gate, it

can be used for network activity LED.

/COLLED(MII_TXD2)

OML

Collision LED/Transmit Data

It notifies when collisions occur.

It is valid at half-duplex, and is ignored at full-duplex.

/FDXLED(MII_TXD1)

OML

Full duplex LED/Transmit Data

It outputs low at the full-duplex and outputs high at the half-

duplex according to auto-negotiation or manual configuration

of OP_MODE[2:0].

W5300 Datasheet(PDF) 20 Page - WIZnet Co., Ltd

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