Hello OMAP forum!
I have an application question regarding the TI OMAP-L138 SATA Interface. See attached data sheet pages 148 & 149. We are adding the SATA interface h/w to our Processor board design and I had a question on the placement of the TX & RX Coupling Caps shown in Fig. 6-30. In our planned design, the SATA connector shown in this figure is a high speed board to board connector. This B-B connector mates with a Peripheral board beneath that then routes the TX & RX signals to a PCIe Mini connector. This PCIe Mini connector then supports connection of a mSATA Solid State Drive. So given this board and connector arrangement, where is the best place to locate the Coupling Caps? Options would be:
1. On the Processor board directly at the Processor SATA pins
2. On the Processor board directly at the Board to Board Connector
3. On the Peripheral board directly at the Board to Board Connector
4. On the Peripheral board directly at the PCIe Mini Connector
Any feedback or input is welcomed and appreciated!
thanks again!
Paul