SMSC flexpwr lan8710i Manual De Usuario

MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR

® 

 Technology in a Small Footprint

Revision 1.0 (04-15-09)

14

SMSC LAN8710/LAN8710i

This chapter describes the signals on each pin. When a lower case “n” is used at the beginning of the
signal name, it indicates that the signal is active low. For example, nRST indicates that the reset signal
is active low. The buffer type for each signal is indicated in the TYPE column, and a description of the
buffer types is provided in 

Unless otherwise noted in the pin description, internal pull-up and pull-down resistors are
always enabled. The internal pull-up and pull-down resistors prevent unconnected inputs
from floating, and must not be relied upon to drive signals external to 

LAN8710/LAN8710i

.

When connected to a load that must be pulled high or low, an external resistor must be
added.

Note: The digital signals are not 5V tolerant.They are variable voltage from +1.6V to +3.6V, as shown

in 

I8

Input.

O8

Output with 8mA sink and 8mA source.

IOD8

Input/Open-drain output with 8mA sink.

IPU

Input with 67k (typical) internal pull-up. 

IPD

Input with 67k (typical) internal pull-down.

IOPU

Input/Output with 67k (typical) internal pull-up. Output has 8mA sink and 8mA source.

IOPD

Input/Output with 67k (typical) internal pull-down. Output has 8mA sink and 8mA source.

AI

Analog input

AIO

Analog bi-directional

ICLK

Crystal oscillator input pin

OCLK

Crystal oscillator output pin

P

Power pin

TXD0

22

I8

Transmit Data 0: The MAC transmits data to the transceiver using this 
signal in all modes. 

TXD1

23

I8

Transmit Data 1: The MAC transmits data to the transceiver using this 
signal in all modes