Ethernet Connection Without Transformer - Jinan USR IOT Technology WIFI232-A User Manual

Figure 18

3.5.2.2 Ethernet Connection without Transformer

For this application, Ethernet will work as internal data transmition interface and save one
transformer and RJ45 connector. Ethernet PHY-to-PHY connection will use AC coupled
connection. This is a space and cost optimized solution. Hardware reference design as following:
Note: VCC signal at reference design shall base on user board PHY chipset voltage level, such
as 2.5V power supply for general Ethernet PHY chipset.
(Above is for USR-WIFI232-A/B pin type module, Below is for SMD type USR-WIFI232-C)
Jinan USR IOT Technology Limited
USR-WIFI232-A/B/C User Manual
Ethernet Ethernet Reference Reference
Ethernet Ethernet Reference Reference Design
Page 23 of 93
Design Design with with Transformer Transformer
Design with with Transformer Transformer
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