Kontron KTAM3874-pITX - Manual (Page 32)

KTD-S0051-D Page 28 PCI Express® Interface
KTAM3874/pITX User's Guide
13 PCI Express ® Interface
TI's ® Sitara TM supports the PCI Express ® specification 2.0 with 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 J900 (52 pins).
Header Pin Signal Description Type Pin Signal Description Type
1 N.C. Not connected NC 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 N.C. Not connected NC 8 USIM_VCC USIM power PWR
9 GND Ground PWR 10 USIM_IO USIM data IO
11 PE_CLK- PCIe ® clock (neg.) DSO 12 USIM_CLK USIM clock O
13 PE_CLK+ PCIe ® clock (pos.) DSO 14 USIM_RST USIM reset O
15 GND Ground PWR 16 USIM_VPP USIM progr. volt. PWR
17 USIM_USB- USIM USB (neg.) DSIO 18 GND Ground PWR
19 USIM_USB+ USIM USB (pos.) DSIO 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 N.C. Not connected NC
31 PE_TX- PCIe ® transmit (neg.) DSO 32 N.C. Not connected NC
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
1
51 SEL_SATA# S-ATA ® identification I-18 52 VCC3 1) Power +3.3V PWR