Content originally posted in LPCWare by REO on Wed Feb 18 09:03:41 MST 2015 Hi all
I'm currently designing an application with the LPC1857 uC.
I need both Ethernet and a SD card reader, but since the PHY we have on stock roght now only support MII I have a problem. It turns out that MII signal "RX_CLK" is shared with SD card signal "SD_CLK" on PC_0 (pin D4 on 256 pin BGA)
Is there any kind of work around for this? Or is my only option to find a PHY that supports RMII?
Content originally posted in LPCWare by bavarian on Tue Mar 17 04:54:10 MST 2015 Yes, this is the only option. Use a PHY which supports RMII. Using MII and the SD Card interface is not possible due to this pin conflict.
