Our customer currently reviewing the datasheet of ADIN1300 for their industrial application.
While checking its schematic and the PCB layout, they found below queries which would like to get ADI confirmation:
- In the evaluation board, it is mentioned that signals are placed on an inner layer with ground above and below. In the layout, it is placed on top layer. Must we place it on inner layer?
From the layout guidelines, understand the EVAL-ADIN1300FMCZ consists of 4 layer PCB (top layer, 2 inner layer, and the bottom layer)
The carry signal and routing signals will be coming from the top and bottom layers. However in the schematic design, we could see PLACE SIGNALS ON AN INNER LAYER WITH GROUND ABOVE AND BELOW STICK GND VIA AROUND GROUP OF RX AND GROUP OF TX LINES in the FMC connector portion. Please clarify.
2. TX signals series termination with zero OHM resistor. Is it a must? Any significant impact if without zero OHM termination at TX line.
According to the schematic of the ADIN1300 EVK, the termination resistor of TX have to be placed 0 ohm, is this related to the internal MDI termination?
3. All Tracks need to be length matched. Length match is applied to TXD group RXD group separately or both must be matched.
All TX signal trace lengths must match to each other and all RX signal trace lengths must match to each other, please confirm?
- MDIx_P and MDIx_N, there are 4 pairs. Do we need to match the length? Are all 4 pairs need to be matched at same length?
Thanks in advance.