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Resistor Selector<br />
PCIe x4 Cable<br />
Connector<br />
Sideband<br />
PCIe REFCLK<br />
4x Data Connection<br />
1-to-2 HSTL<br />
Clock Buffer<br />
PCIe PWRON<br />
PCIe PERSTn<br />
PCIe PRSNTn<br />
PCIe WAKEn<br />
PCIe x4 Cable<br />
Connector<br />
PCIe REFCLK<br />
4x Data Connection<br />
PCIe REFCLK<br />
SMBus (no-connect)<br />
JTAG (loopback)<br />
PCIe x8 Fingers<br />
Sideband<br />
DN5000161 <strong>Block</strong> <strong>Diagram</strong><br />
PCIe Cable Adapter<br />
Downstream Side
SMBus<br />
JTAG<br />
JTAG<br />
Sideband<br />
PCIe x16 Slot<br />
8x Data Connection (no-connect)<br />
PRSNTn<br />
WAKEn<br />
PERSTn<br />
Optoisolators<br />
PCIe REFCLK<br />
+12V/+3.3V Power<br />
4x Data Connection<br />
PCIe x4 Cable<br />
Connector<br />
PERSTn<br />
4x Data Connection<br />
PCIe x4 Cable<br />
Connector<br />
WAKEn<br />
Sideband Signals<br />
Sideband<br />
PRSNTn<br />
ATX Power Header<br />
Enable Jumper<br />
DN5000161 <strong>Block</strong> <strong>Diagram</strong><br />
PCIe Cable Adapter<br />
Upstream Side