W5500 Datasheet Version1.0.9 5 / 66
Table of Contents
Pin Assignment .......................................................................................... 7
1.1 Pin Descriptions .............................................................................. 7
HOST Interface ......................................................................................... 12
2.1 SPI Operation Mode ........................................................................ 13
2.2 SPI Frame .................................................................................... 14
2.2.1 Address Phase......................................................................... 14
2.2.2 Control Phase ......................................................................... 15
2.2.3 Data Phase ............................................................................ 17
2.3 Variable Length Data Mode (VDM) ....................................................... 17
2.3.1 Write Access in VDM ................................................................. 18
2.3.2 Read Access in VDM .................................................................. 21
2.4 Fixed Length Data Mode (FDM) .......................................................... 24
2.4.1 Write Access in FDM ................................................................. 25
2.4.2 Read Access in FDM .................................................................. 26
Register and Memory Organization ................................................................ 27
3.1 Common Register Block ................................................................... 29
3.2 Socket Register Block ...................................................................... 30
3.3 Memory ...................................................................................... 31
Register Descriptions ................................................................................. 32
4.1 Common Registers ......................................................................... 32
4.2 Socket Registers ............................................................................ 44
Electrical Specifications ............................................................................. 58
5.1 Absolute Maximum Ratings ............................................................... 58
5.2 Absolute Maximum Ratings (Electrical Sensitivity) ................................... 58
5.3 DC Characteristics ......................................................................... 59
5.4 Power Dissipation .......................................................................... 60
5.5 AC Characteristics ......................................................................... 60
5.5.1 Reset Timing .......................................................................... 60
5.5.2 Wake up Time ......................................................................... 60
5.5.3 Crystal Characteristics .............................................................. 60
5.5.4 SPI Timing ............................................................................. 61
5.5.5 Transformer Characteristics ........................................................ 62
5.5.6 MDIX .................................................................................... 62
IR Reflow Temperature Profile (Lead-Free) ..................................................... 63
Package Descriptions ................................................................................. 64
Document History Information ....................................................................... 65
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普通网友2023-07-28文中提到了具体的应用案例，让人更能感受到这个技术的实用性。
余青葭2023-07-28所有的步骤都有一定的详细解释，对于需要执行该转换的读者来说非常实用。
苗苗小姐2023-07-28这个文件详细介绍了网口芯片SPI转网口的原理，对于初学者来说，很容易理解。
型爷2023-07-28文档中还包含了对于mac和PHY的介绍，对于不熟悉这两个概念的读者来说，很有帮助。
仙夜子2023-07-28虽然简洁明了，但是文件的内容十分丰富，综合考虑了很多方面，值得一读。
