LAN9115 datasheet(14/114 Pages) MICROCHIP

Part #	LAN9115

Description	Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller

PDF	114 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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14 / 114 page

LAN9115

DS00002269A-page 14

 2005-2016 Microchip Technology Inc.

Note 2-2

The external SMI port is selected when SMI_SEL = 1. When SMI_SEL = 0, MDIO is tri-stated and

MDC is driven low.

Management Data

IO/External PHY

Detect

MDIO

(EXT_PHY_DET)

I/O8 (PD)

Management Data IO: When

SMI_SEL = 1, this pin is the MII SMI

serial IO bus pin.

External PHY Detect: This pin also

functions as a strap input, which can

be used to indicate the presence of an

external PHY.

See Note 2-2.

Note:

See

Section

5.3.9,

"HW_CFG—Hardware

Configuration Register" for

more information on SMI_-

SEL and EXT_PHY_DET

Management Data

Clock

MDC

O8 (PD)

Management Data Clock: When

SMI_SEL = 1, this pin is the MII

management data clock. When

SMI_SEL=0, this pin is driven low.

See Note 2-2.

Note:

See

Section

5.3.9,

"HW_CFG—Hardware

Configuration Register" for

more information on SMI_-

SEL.

TABLE 2-6:

MII INTERFACE SIGNALS (CONTINUED)

Pin No.

Name

Symbol

Buffer

Type

# Pins

Description

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