High-Flying Electronics Technology Co. Ltd HF-A11X Manual De Usuario
HF-A11x V3.1 User Manual
Shanghai High-Flying Electronics Technology Co., Ltd
www.hi-flying.com
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1.3.2. 10/100M
Ethernet
Interface
HF-A11x modules provide one 10/100M Ethernet PHY layer interface for data transition or user
configuration. This Ethernet support with transformer and without transformer (PHY-to-PHY) 2
kinds of connection.
configuration. This Ethernet support with transformer and without transformer (PHY-to-PHY) 2
kinds of connection.
1.3.2.1. Ethernet Connection with Transformer
User board put Ethernet transformer and RJ-45 connector. This is a general 10/100M Ethernet
phy layer connection. The reference design as following:
phy layer connection. The reference design as following:
Figure 8.
Ethernet Reference Design with Transformer
1.3.2.2. Ethernet Connection without Transformer
For this application, Ethernet will work as internal data transmition interface and save one
transformer and RJ-45 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.
transformer and RJ-45 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.
Figure 9.
Ethernet Reference Design without Transformer
1.3.3. UART
Interface
UART interface is the serial data transmition interface mainly used for HF-A11x modules.