Datasheet
Table Of Contents
- Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
- 1.0 Introduction
- 2.0 Pin Description and Configuration
- 3.0 Functional Description
- 3.1 Transceiver
- 3.2 Auto-negotiation
- 3.3 HP Auto-MDIX Support
- 3.4 MAC Interface
- 3.5 Serial Management Interface (SMI)
- 3.6 Interrupt Management
- 3.7 Configuration Straps
- 3.8 Miscellaneous Functions
- 3.9 Application Diagrams
- 4.0 Register Descriptions
- 4.1 Register Nomenclature
- 4.2 Control and Status Registers
- TABLE 4-2: SMI Register Map
- 4.2.1 Basic Control Register
- 4.2.2 Basic Status Register
- 4.2.3 PHY Identifier 1 Register
- 4.2.4 PHY Identifier 2 Register
- 4.2.5 Auto Negotiation Advertisement Register
- 4.2.6 Auto Negotiation Link Partner Ability Register
- 4.2.7 Auto Negotiation Expansion Register
- 4.2.8 Mode Control/Status Register
- 4.2.9 Special Modes Register
- 4.2.10 Symbol Error Counter Register
- 4.2.11 Special Control/Status Indications Register
- 4.2.12 Interrupt Source Flag Register
- 4.2.13 Interrupt Mask Register
- 4.2.14 PHY Special Control/Status Register
- 5.0 Operational Characteristics
- 6.0 Package Information
- 7.0 Application Notes
- Appendix A: Data Sheet Revision History
- The Microchip Web Site
- Customer Change Notification Service
- Customer Support
- Product Identification System
- Worldwide Sales and Service

LAN8720A/LAN8720AI
DS00002165B-page 66 2016 Microchip Technology Inc.
6.0 PACKAGE INFORMATION
6.1 24-QFN (Punch)
Min Nominal Max Remarks
A 0.70 0.85 1.00 Overall Package Height
A1 0 0.02 0.05 Standoff
A2 — — 0.90 Mold Cap Thickness
D/E 3.90 4.00 4.10 X/Y Body Size
D1/E1 3.55 3.75 3.95 X/Y Mold Cap Size
D2/E2 2.40 2.50 2.60 X/Y Exposed Pad Size
L 0.30 0.40 0.50 Terminal Length
b 0.18 0.25 0.30 Terminal Width
k 0.25 — — Terminal to Exposed Pad Clearance
e 0.50 BSC Terminal Pitch
Note 1: All dimen
sions are in millimeters unless otherwise noted.
2: Dimen
sion “b” applies to plated terminals and is measured between 0.15 and 0.30 mm from the terminal tip.
3: Th
e pin 1 identifier may vary, but is always located within the zone indicated.