MITX-DNV0 Series - User Guide, Rev. 1.2
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7.12. PCIE x8 Socket (PCIE1)
The 8-lane (x8) PCI Express slot connector can be used for external PCI Express cards inclusive graphics card and
dedicated TMDS passive card. The slot is located nearest the edge of the board. Maximum theoretical bandwidth
using 8 lines is 8 GB/s.
Figure 22: PCIE x8 Socket PCIE1
Table 38: Pin Assignment PCIE1
Pin Side B Connector Side A Connector
Signal Description Signal Description
1 +12V +12 V power PRSNT1# Hot plug presence detect
2 +12V +12 V power +12V +12 V power
3 RSVD Reserved +12V +12 V power
4 GND Ground GND Ground
5 SMCLK SMBus clock JTAG2 TCK
6 SMDAT SMBus data JTAG3 TDI
7 GND Ground JTAG4 TDO
8 +3.3V +3.3 V power JTAG5 TMS
9 JTAG1 +TRST# +3.3V +3.3 V power
10 3.3VAUX 3.3 V power +3.3V +3.3 V power
11 PCIE_WAKE# Link Reactivation PERST# Reset
Mechanical Key
12 RSVD Reserved GND Ground
13 GND Ground REFCLK+ Reference clock differential
pair
14 PETp0 Transmitter Lane 0,
differential pair
REFCLK-
15 PETn0 GND Ground
16 GND Ground PERp0 Receiver Lane 0, differential
pair
17 PRSNT2# Hot plug presence detect PERn0
18 GND Ground GND Ground
19 PETp1 Transmitter Lane 1, differential
pair
RSVD Reserved
20 PETn1 GND Ground
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