W5500 Datasheet Version1.0.5 (NOV 2014) 5 / 69
Table of Contents
1 Pin Assignment .......................................................................................... 8
1.1 Pin Descriptions .............................................................................. 8
2 HOST Interface ......................................................................................... 13
2.1 SPI Operation Mode ........................................................................ 14
2.2 SPI Frame .................................................................................... 15
2.2.1 Address Phase......................................................................... 15
2.2.2 Control Phase ......................................................................... 16
2.2.3 Data Phase ............................................................................ 18
2.3 Variable Length Data Mode (VDM) ....................................................... 18
2.3.1 Write Access in VDM ................................................................. 19
2.3.2 Read Access in VDM .................................................................. 22
2.4 Fixed Length Data Mode (FDM) .......................................................... 25
2.4.1 Write Access in FDM ................................................................. 26
2.4.2 Read Access in FDM .................................................................. 27
3 Register and Memory Organization ................................................................ 28
3.1 Common Register Block ................................................................... 30
3.2 Socket Register Block ...................................................................... 31
3.3 Memory ...................................................................................... 32
4 Register Descriptions ................................................................................. 33
4.1 Common Registers ......................................................................... 33
4.2 Socket Registers ............................................................................ 45
5 Electrical Specifications ............................................................................. 61
5.1 Absolute Maximum Ratings ............................................................... 61
5.2 Absolute Maximum Ratings (Electrical Sensitivity) ................................... 61
5.3 DC Characteristics ......................................................................... 62
5.4 Power Dissipation .......................................................................... 63
5.5 AC Characteristics ......................................................................... 63
5.5.1 Reset Timing .......................................................................... 63
5.5.2 Wake up Time ......................................................................... 63
5.5.3 Crystal Characteristics .............................................................. 63
5.5.4 SPI Timing ............................................................................. 64
5.5.5 Transformer Characteristics ........................................................ 65
5.5.6 MDIX .................................................................................... 65
6 IR Reflow Temperature Profile (Lead-Free) ..................................................... 66
7 Package Descriptions ................................................................................. 67
Document History Information ....................................................................... 68