KT690 Family
KTD-00738-C Public User Manual Date: 2008-09-16 Page 35 of 91
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 Signal PIN Signal Type Note
+12V B1 A1 NC
+12V B2 A2 +12V
+12V B3 A3 +12V
GND B4 A4 GND
SMB_CLK B5 A5 NC
SMB_DATA B6 A6 NC
GND B7 A7 NC
+3V3 B8 A8 NC
NC B9 A9 +3V3
SB3V3 B10 A10 +3V3
WAKE# B11 A11 RST#
NC B12 A12 GND
GND B13 A13 PCIE_x16 CLK
PEG_TXP[0] B14 A14 PCIE_x16 CLK#
PEG_TXN[0] B15 A15 GND
GND B16 A16 PEG_RXP[0]
I2C_CLK B17 A17 PEG_RXN[0]
GND B18 A18 GND
PEG_TXP[1] B19 A19 NC
PEG_TXN[1] B20 A20 GND
GND B21 A21 PEG_RXP[1]
GND B22 A22 PEG_RXN[1]
PEG_TXP[2] B23 A23 GND
PEG_TXN[2] B24 A24 GND
GND B25 A25 PEG_RXP[2]
GND B26 A26 PEG_RXN[2]
PEG_TXP[3] B27 A27 GND
PEG_TXN[3] B28 A28 GND
GND B29 A29 PEG_RXP[3]
NC B30 A30 PEG_RXN[3]
DDC_DATA B31 A31 GND
GND B32 A32 NC
PEG_TXP[4] B33 A33 NC
PEG_TXN[4] B34 A34 GND
GND B35 A35 PEG_RXP[4]
GND B36 A36 PEG_RXN[4]
PEG_TXP[5] B37 A37 GND
PEG_TXN[5] B38 A38 GND
GND B39 A39 PEG_RXP[5]
GND B40 A40 PEG_RXN[5]
PEG_TXP[6] B41 A41 GND
PEG_TXN[6] B42 A42 GND
GND B43 A43 PEG_RXP[6]
GND B44 A44 PEG_RXN[6]
PEG_TXP[7] B45 A45 GND
PEG_TXN[7] B46 A46 GND
GND B47 A47 PEG_RXP[7]
(continues)
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