SJA1105TEL RMII clock configuration

cancel
Showing results for 
Search instead for 
Did you mean: 

SJA1105TEL RMII clock configuration

303 Views
sloterhot
Contributor I

Hi i am looking at the "Application_board_SJA1105_am3.pdf" reference board for the SJA1105 ethernet switch. I can see that all the PHYs are connected with RMII and with clock sourced from the switch. For the port connected to the uC (MII4) the configuration is also RMII but the clock is generated from a external 50MHz oscillator.

My question is: Can the switch generate the 50MHz instead of the external oscilator which operated in MAC(uC)->PHY(SJA1105) mode ?

Untitled.png

Regards

0 Kudos
1 Reply

174 Views
Bulat
NXP TechSupport
NXP TechSupport

REF_CLK signal of the switch is an input when the switch acts as a RMII PHY.

Regards,

Bulat

0 Kudos