LAN9500AI datasheet(24/66 Pages) SMSC

24 / 66 page

USB 2.0 to 10/100 Ethernet Controller

Datasheet

Revision 1.1 (04-18-13)

SMSC LAN950x Family

DATASHEET

Note 3.3

This pin is a no-connect (NC) for LAN9500A/LAN9500Ai, but may be connected to

VDD33A for backward compatibility with LAN9500/LAN9500i.

Note 3.4

For LAN9500A/LAN9500Ai this pin provides additional PME related functionality. Refer to

the respective pin descriptions and Chapter 6, "PME Operation," on page 41 for additional

information.

3.2

Buffer Types

Table 3.10 Buffer Types

BUFFER TYPE

DESCRIPTION

Schmitt-triggered Input

IS_5V

5V Tolerant Schmitt-triggered Input

Output with 8mA sink and 8mA source

OD8

Open-drain output with 8mA sink

O12

Output with 12mA sink and 12mA source

OD12

Open-drain output with 12mA sink

50uA (typical) internal pull-up. Unless otherwise noted in the pin description, internal pull-

ups are always enabled.

Note:

Internal pull-up resistors prevent unconnected inputs from floating. Do not rely on

internal resistors to drive signals external to the device. When connected to a load

that must be pulled high, an external resistor must be added.

50uA (typical) internal pull-down. Unless otherwise noted in the pin description, internal

pull-downs are always enabled.

Note:

Internal pull-down resistors prevent unconnected inputs from floating. Do not rely

on internal resistors to drive signals external to the device. When connected to a

load that must be pulled low, an external resistor must be added.

Analog input

AIO

Analog bi-directional

ICLK

Crystal oscillator input pin

OCLK

Crystal oscillator output pin

Power pin

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