Hi team,
I have doubt on EMAC Clock, Which clock domain is used for Ethernet module VCLK3 or VCLKA4_DIVR?
Because In TRM VCLKA4_DIVR is used for EMAC internal logic but In data sheet VCLK3 is used for EMAC.
Thanks,
Regards,
Veerappan P A.
Hi Veerappan,
In total there will be 3 types of clocks in EMAC.
1. Clock used for internal EMAC logic; this is done by the VCLKA4_DIVR domain clock.
2. Clock used for MDIO functionality. MDIO functionality means configuring the PHY parameters.
This is done by the VCLK3.
3. And finally, clock used for transmitting/receiving data to the external PHY IC.
As you can see there will be two clocks one for transferring TXCLK and one for receiving RXCLK. And you can also note that these clocks should need to be supply by PHY IC.
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Thanks & regards,
Jagadish.
Hi Veerappan,
You can keep it either 25Mhz (MII interface) or 50Mhz (RMII Interface).
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Thanks & regards,
Jagadish.
