Kontron KTT20-pITX - Manual (Page 29)

KTD-S0044-G Page 25 PCI Express® Interface
KTT20/pITX User's Guide
13 PCI Express ® Interface
NVIDIAs ® Tegra ® 250 supports the PCI Express ® specification 1.1 with 2.5 GT/s (GigaTransfers/s - identical
with Gigabits/s by one lane). One port with one lane is provided for free usage. KONTRON Technology A/S
cannot guarantee that all available cards on the market function smoothly.
13.1 Connector
The mini PCI Express ® port is available through the connector J2100 (52 pins).
Header Pin Signal Description Type Pin Signal Description Type
1 WAKE# Wake event I-33 2 VCC3 1) Power +3.3V PWR
3 N.C. Not connected NC 4 GND Ground PWR
5 N.C. Not connected NC 6 VCC1 1) Power +1.5V PWR
7 CLKREQ# PCIe ® clock request I-33 8 N.C. Not connected NC
9 GND Ground PWR 10 N.C. Not connected NC
11 PE_CLK- PCIe ® clock (neg.) DSO 12 N.C. Not connected NC
13 PE_CLK+ PCIe ® clock (pos.) DSO 14 N.C. Not connected NC
15 GND Ground PWR 16 N.C. Not connected NC
17 N.C. Not connected NC 18 GND Ground PWR
19 N.C. Not connected NC 20 W_DISABLE# Wireless disable O-33
21 GND Ground PWR 22 PE_RST# PCIe ® reset O-33
23 PE_RX- PCIe ® receive (neg.) DSI 24 VCC3 1) Power +3.3V PWR
25 PE_RX+ PCIe ® receive (pos.) DSI 26 GND Ground PWR
27 GND Ground PWR 28 VCC1 1) Power +1.5V PWR
29 GND Ground PWR 30 I2C_CLK I 2 C TM clock O-33
31 PE_TX- PCIe ® transmit (neg.) DSO 32 I2C_DATA I 2 C TM data IO-33
33 PE_TX+ PCIe ® transmit (pos.) DSO 34 GND Ground PWR
35 GND Ground PWR 36 USB- USB port (neg.) DSIO-33
37 GND Ground PWR 38 USB+ USB port (pos.) DSIO-33
39 VCC3 1) Power +3.3V PWR 40 GND Ground PWR
41 VCC3 1) Power +3.3V PWR 42 N.C. Not connected NC
43 GND Ground PWR 44 N.C. Not connected NC
45 N.C. Not connected NC 46 N.C. Not connected NC
47 N.C. Not connected NC 48 VCC1 1) Power +1.5V PWR
49 N.C. Not connected NC 50 GND Ground PWR
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51 N.C. Not connected NC 52 VCC3 1) Power +3.3V PWR