Hello,
I have custom designed ethernet board using DP83848VV VBI (as written on its top) and struggling to ping (RMII Mode) using uC. I measured all the voltages as several points and are as follows:
1) RX_DV - 3.3V
2) PFBOUT, PFBIN1 and PFBIN2 - 1.8V
3) RBIAS - 1.2V
4) Clock Frequency - 50 MHz.
I can able to read/Write the register and checked that that the chip is in RMII mode. When the ethernet cable is connected to the RJ45, LED_LINK is stable and LED_ACT blinks. I performed BIST test using external loopback cable and readings are as follows:
1) Write BMCR = 0x2100
2) Write BMCR = 0x6100
3) Read PHYSTS = 0x0D
4) Read PHYCR = 0x060D
5) Write PHYCR = 0x8021
6) Read PHYCR = 0x8321.
Even though test passed, i am not getting able to ping it. Where I am making mistake?
I am attaching my schematic for the review.
Thank you
Best regards,
Sid
