LAN9215I_07 Datasheet, PDF(20/138 Page) SMSC Corporation – Highly Efficient Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support

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LAN9215I_07 Datasheet, PDF (20/138 Pages) SMSC Corporation – Highly Efficient Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support

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NAME

PLL Ground

Reference Power

Reference Ground

Highly Efficient Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support

Datasheet

Table 2.5 System and Power Signals (continued)

SYMBOL

VSS_PLL

BUFFER

TYPE

NUM

PINS

DESCRIPTION

GND for the PLL

VDD_REF

Connected to 3.3v power and used as the

reference voltage for the internal PLL

VSS_REF

Ground for internal PLL reference voltage

Note 2.1 Please refer to the SMSC application note AN14.9 - âMigrating from LAN9115 to the

LAN9215â for additional details.

NAME

Transmit Clock:

Transmit Data [3:0]

Transmit Enable

Receive Clock

Receive Error

Collision Detect:

Receive Data[3:0]

Carrier Sense

Receive Data

Valid:

SYMBOL

TX_CLK

TXD[3:0]

TX_EN

RX_CLK

RX_ER

COL

RXD[3:0]

CRS

RX_DV

Table 2.6 MII Interface Signals

BUFFER

TYPE

(PD)

Note 2.2

(PD)

NUM

PINS

DESCRIPTION

Transmit Clock: 25MHz in 100Base-TX mode.

2.5MHz in 10Base-T mode.

Transmit Data 3-0: Data bits that are accepted

by the PHY for transmission.

When the internal PHY is selected, these

signals are driven low (0).

Transmit Enable: Indicates that valid data is

presented on the TXD[3:0] signals, for

transmission.

When the internal PHY is selected, this signal

is driven low (0).

Receive Clock: 25MHz in 100Base-TX mode.

2.5MHz in 10Base-T mode.

Receive Error: Asserted by the PHY to indicate

that an error was detected somewhere in the

frame presently being transferred from the PHY.

MII Collision Detect: Asserted by the PHY to

indicate detection of collision condition.

Receive Data 3-0: Data bits that are sent from

the PHY to the Ethernet MAC. See Note 2.2.

Carrier Sense: Indicates detection of carrier.

Receive Data Valid: Indicates that recovered

and decoded data nibbles are being presented

by the PHY on RXD[3:0].

Revision 1.93 (12-12-07)

DATASHEET

SMSC LAN9215i

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