LAN8187I datasheet(14/66 Pages) SMSC

Part #	LAN8187I

Description	High-Performance MII and RMII 10/100 Ethernet PHY with HP Auto-MDIX

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Manufacturer	SMSC [SMSC Corporation]

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High-Performance MII and RMII 10/100 Ethernet PHY with HP Auto-MDIX

Datasheet

Revision 0.6 (02-24-06)

14

SMSC LAN8187/LAN8187I

DATASHEET

Table 3.2 LED Signals

SIGNAL NAME

TYPE

DESCRIPTION

CRS

O

Carrier Sense: Indicates detection of carrier.

RX_DV

O

Receive Data Valid: Indicates that recovered and decoded data

nibbles are being presented on RXD[3:0].

Note:

This signal is not used in RMII Mode.

SPEED100/

PHYAD0

I/O

LED1 – SPEED100 indication. Active indicates that the selected

speed is 100Mbps. Inactive indicates that the selected speed is

10Mbps.

Note:

This signal is mux’d with PHYAD0

LINK/

PHYAD1

I/O

LED2 – LINK ON indication. Active indicates that the Link

(100Base-TX or 10Base-T) is on.

Note:

This signal is mux’d with PHYAD1

ACTIVITY/

PHYAD2

I/O

LED3 – ACTIVITY indication. Active indicates that there is

Carrier sense (CRS) from the active PMD.

Note:

This signal is mux’d with PHYAD2

FDUPLEX/

PHYAD3

I/O

LED4 – DUPLEX indication. Active indicates that the PHY is in

full-duplex mode.

Note:

This signal is mux’d with PHYAD3

Table 3.3 Management Signals

SIGNAL NAME

TYPE

DESCRIPTION

MDIO

I/O

Management Data Input/OUTPUT: Serial management data

input/output.

MDC

I

Management Clock: Serial management clock.

Table 3.4 Boot Strap Configuration Inputsa

SIGNAL NAME

TYPE

DESCRIPTION

GPO1/

PHYAD4

I/O

PHY Address Bit 4: set the default address of the PHY. This

signal is mux’d with GPO1

FDUPLEX/

PHYAD3

I/O

PHY Address Bit 3: set the default address of the PHY.

Note:

This signal is mux’d with FDUPLEX

ACTIVITY/

PHYAD2

I/O

PHY Address Bit 2: set the default address of the PHY.

Note:

This signal is mux’d with ACTIVITY

LINK/

PHYAD1

I/O

PHY Address Bit 1: set the default address of the PHY.

Note:

This signal is mux’d with LINK

SPEED100/

PHYAD0

I/O

PHY Address Bit 0: set the default address of the PHY.

Note:

This signal is mux’d with SPEED100

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