CYW43907/CYW54907 Direct ETH MAC (RMII) to MAC (RMII) connection

[SeVo_4684381]

Hello,

Does Ethernet module of Cypress WiFi MCUs support MAC (RMII) to MAC (RMII) connection without Ethernet PHYs?

As I want to use Ethernet for onboard communication with FPGA, I want to avoid extra chips on the PCB.

Thank you in advance.

[YashM]

Hi,

Please have a look at the following blog post for your reference Application for Network Interface through Ethernet with CYW943907AEVAL1F

[YashM · Accepted solution]

Ideally, RMII connections are meant for communication between MAC and PHY. If you see the schematic of CYW43907EVAL1F, there is a PHY chip being connected externally (BCM524), which gets connected to RMII pins of CYW43907.

You can check the driver code of ethernet in C:\Users\<name>\WICED-Studio-6.6\43xxx_Wi-Fi\WICED\platform\MCU\BCM4390x\peripherals\ethernet. We haven't tested the MAC to MAC communication through RMII.

[SeVo_4684381]

Thank you for clarification!