LAN8740AI-EN datasheet(130/136 Pages) MICROCHIP

130 / 136 page

LAN8740A/LAN8740Ai

DS00001987A-page 130

 2013-2015 Microchip Technology Inc.

APPENDIX A: REVISION HISTORY

REVISION LEVEL

& DATE

SECTION/FIGURE/ENTRY

CORRECTION

Revision A

(09-07-15)

Replaces the previous SMSC version Rev. 1.1

• Added Note and Trademark page

• Added Worldwide Sales and Services page

• Added Product Identification System

• Changed ‘QFN’ to ‘VQFN’

Chapter 2, "Pin Description and

Configuration"

• Figure 2-1: rotated 90° cw

• Table 2-3, “Serial Management Interface (SMI)

Pins”: Changed “VIS/VOD8 (PU)” to “VIS/VO8

(PU)”

Section 4.1, "Register Nomenclature"

Table 4-1, “Register Bit Types”, register bit

description for byte type notification ‘W’: Changed

“read” to ‘written”

Section 5.6.4, "RMII Interface Timing"

Updated RMII timing table: Updated REF_CLK In

mode toval max from “14.0 ns” to “15.0 ns”

Section 5.7, "Clock Circuit"

Added new 100 µW crystal specifications and circuit

diagram. The section is now split into two

subsections, one for 300 µW crystals and the other

for 100 µW crystals.

Chapter 6, "Package Outline"

Updated package outline drawing information

Rev. 1.1

(05-10-13)

General

• Changed part numbers from

“LAN8740/LAN8740i” to

“LAN8740A/LAN8740Ai”

• Updated ordering information

• Updated figures

Cover

Added new bullet under Highlights section:

“Deterministic 100 Mb internal loopback latency (MII

Mode)”

Chapter 2, "Pin Description and

Configuration", Table 2-1, “MII/RMII

Signals”

Changed buffer type from “VIS (PU)” to “VIS”

Chapter 2, "Pin Description and

Configuration", Table 2-3, “Serial

Management Interface (SMI) Pins”

• Added pull-up to MDIO buffer type description

• Changed “VIS/VOD8 (PU)” to “VIS/VO8 (PU)”

Section 3.3, "HP Auto-MDIX Support"

Changed “100BASE-T” to “100BASE-TX”

Section 3.4.2.1, "CRS_DV - Carrier

Sense/Receive Data Valid"

Changed “100BASE-X” to “100BASE-TX”

Section 3.5, "Serial Management

Interface (SMI)"

Removed sentence stating “Non-supported registers

(such as 7 to 15) will be read as hexadecimal

“FFFF”.

Section 3.8.11, "Cable Diagnostics"

Updated section with additional operation details

Section 3.8.12.1, "Near-end Loopback" Added cross-reference to 100 Mbps internal

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