2.7.2 Reference Schematic
Figure 13: SATA Connector Diagram
2.7.3 Routing Considerations
Route SATA signals as differential pairs, with an 85 Ω differential impedance and a 50 Ω, single- ended impedance. Ideally, a SATA pair is routed on a single layer adjacent to a ground plane.
SATA pairs should not cross plane splits. Limit layer transitions to a minimum. Carrier Board redrivers on the TX/RX pairs may be necessary.
28 COM Express® Carrier Board Design Guide
