Pci-Express Connectors; Pci-Express X8 - Kontron KT690/mITX User Manual

KTD-00738-C
4.5

PCI-Express Connectors

The KT690 board contains one 8-lane (x8) PCI Express port on a PCI Express x16 connector. The PCI
Express port is compliant to the PCI Express Specification revision 1.1a.
The x8 port operates at a frequency of 2.5 Gb/s on each lane; the port supports a maximum theoretical
bandwidth of 20 Gb/s in each direction.
The 8-lane (x8) PCI Express port supports:
1. An external graphics device utilizing all 8 lanes
2. A single x1, x2 or x4 general purpose PCI Express link
The PCI Express port does not support SDVO and ADD2 cards.
4.5.1

PCI-Express x8

The KT690 boards supports one 8-lane (x8) PCI Express port for external PCI Express based graphics
boards.
Note Type
PEG_TXP[0]
PEG_TXN[0]
PEG_TXP[1]
PEG_TXN[1]
PEG_TXP[2]
PEG_TXN[2]
PEG_TXP[3]
PEG_TXN[3]
PEG_TXP[4]
PEG_TXN[4]
PEG_TXP[5]
PEG_TXN[5]
PEG_TXP[6]
PEG_TXN[6]
PEG_TXP[7]
PEG_TXN[7]
KT690 Family
Public User Manual
Signal
+12V B1
+12V B2
+12V B3
GND B4
SMB_CLK B5
SMB_DATA B6
GND B7
+3V3 B8
NC B9
SB3V3 B10
WAKE# B11
NC B12
GND B13
B14
B15
GND B16
I2C_CLK B17
GND B18
B19
B20
GND B21
GND B22
B23
B24
GND B25
GND B26
B27
B28
GND B29
NC B30
DDC_DATA B31
GND B32
B33
B34
GND B35
GND B36
B37
B38
GND B39
GND B40
B41
B42
GND B43
GND B44
B45
B46
GND B47
Date: 2008-09-16
PIN Signal
A1 NC
A2 +12V
A3 +12V
A4 GND
A5 NC
A6 NC
A7 NC
A8 NC
A9 +3V3
A10 +3V3
A11 RST#
A12 GND
A13 PCIE_x16 CLK
A14 PCIE_x16 CLK#
A15 GND
A16 PEG_RXP[0]
A17 PEG_RXN[0]
A18 GND
A19 NC
A20 GND
A21 PEG_RXP[1]
A22 PEG_RXN[1]
A23 GND
A24 GND
A25 PEG_RXP[2]
A26 PEG_RXN[2]
A27 GND
A28 GND
A29 PEG_RXP[3]
A30 PEG_RXN[3]
A31 GND
A32 NC
A33 NC
A34 GND
A35 PEG_RXP[4]
A36 PEG_RXN[4]
A37 GND
A38 GND
A39 PEG_RXP[5]
A40 PEG_RXN[5]
A41 GND
A42 GND
A43 PEG_RXP[6]
A44 PEG_RXN[6]
A45 GND
A46 GND
A47 PEG_RXP[7]
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Type Note
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