KSZ9031MNX
Table of Contents
1.0 Introduction ..................................................................................................................................................................................... 4
2.0 Pin Description and Configuration .................................................................................................................................................. 5
3.0 Functional Description .................................................................................................................................................................. 13
4.0 Register Descriptions .................................................................................................................................................................... 32
5.0 Operational Characteristics ........................................................................................................................................................... 53
6.0 Electrical Characteristics ............................................................................................................................................................... 54
7.0 Timing Diagrams ............................................................................................................................................................................ 58
8.0 Reset Circuit .................................................................................................................................................................................. 65
9.0 Reference Circuits - LED Strap-In Pins ......................................................................................................................................... 67
10.0 Reference Clock - Connection and Selection .............................................................................................................................. 68
11.0 On-Chip LDO Controller - MOSFET Selection............................................................................................................................. 68
12.0 Magnetic - Connection and Selection .......................................................................................................................................... 69
13.0 Package Outlines ......................................................................................................................................................................... 71
Appendix A: Data Sheet Revision History ........................................................................................................................................... 73
The Microchip Web Site ...................................................................................................................................................................... 74
Customer Change Notification Service ............................................................................................................................................... 74
Product Identification System ............................................................................................................................................................. 75
Customer Support ............................................................................................................................................................................... 77
2016 Microchip Technology Inc.
DS00002096C-page 3