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PCIe/104 and PCI/104-Express Specification Revision 3.0 February 17, 2015 Page 24

2.8.2 SATA

Figure 2-7 below shows the positioning of the DC blocking capacitor and PCIe/104 connector in relation to the Host and

Device. The DC blocking capacitor is placed on the transmit and receive signals. The actual position is not critical;

however the position must be closely matched between the signals of a differential pair. Note that a SATA device

typically has internal capacitors, if so capacitors on the PCB are not required.

Figure 2-7 SATA Capacitor Placement

Table 2-11 below lists the general guide lines for SATA routing.

Table 2-11 SATA Routing Specification

Interface

Differential

Impedance

(Ohm)

Matching

in a pair

mil (mm)

Matching pair

to pair

mil (mm)

SATA 100 ±15% N/A N/A

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 72 73

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Maxim /MAX4889A Spezifikationen Seite 35