RTL8208 Ver la hoja de datos (PDF) - Realtek Semiconductor

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RTL8208

REALTEK SINGLE CHIP OCTAL 10/100 MBPS FAST ETHERNET TRANSCEIVER

Realtek Semiconductor 

RTL8208

5.5 SMI (Serial Management Interface) Pins

Pin Name

MDIO

MDC

Pin

112

113

5.6 LED Pins

Type

I/O,

(Pu)

I,

(Pd)

Description

Management Data I/O. Bi-directional data interface. A 1.5KΩ

pull-up resistor is required (as specified in IEEE802.3u).

The MAC controller access of the MII registers should be delayed at

least 700us after completion of the reset because of the internal reset

operation of the RTL8208

Management Data Clock. 0 to 25MHz clock sourced by MAC to

sample MDIO.

The MAC controller access of the MII registers should be delayed at

least 700us after completion of the reset because of the internal reset

operation of the RTL8208

Pin Name

LED_DATA/

LEDMODE[1]

LED_CLK/

LEDMODE[0]

Pin

49

50

Type

I/O

I/O

Description

LED_DATA outputs serial status bits that can be shifted into a shift

register to be displayed via LEDs. LED_DATA is output

synchronously to LED_CLK.

This pin is latched upon reset as LEDMODE[1]

LEDMODE[1:0] controls the forms of serial LED statuses.

See LED operation mode section.

LED_CLK outputs the reference clock for the serial LED signals. This

pin is latched upon reset as LEDMODE[0]

2003/04/04

9

Rev.1.97

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