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4 Pinouts Description
4.1 PCI Express Interface
The following table lists the PCI Express pins description. For further details, please refer
Express
Interface.
DPU PCI Express x16 Pin Description
Pin
Signal
#
Name
A1
PRSNT1#
A2
12V
A3
12V
A4
GND
A5
TCK
A6
TDI
A7
TDO
A8
TMS
A9
3.3V
A10
3.3V
A11
PERST#
A12
GND
A13
REFCLK+
A14
REFCLK-
A15
GND
A16
PERP0
A17
PERN0
A18
GND
A19
RSVD
A20
GND
A21
PERP1
A22
PERN1
A23
GND
A24
GND
A25
PERP2
Description
Mechanical Present
JTAG - Not Connected
JTAG - Not Connected
JTAG - Not Connected
JTAG - Not Connected
3.3V - (Connected in 900-9D3B4-00CC-
EA0 & 900-9D3B4-00SC-EA0 only)
3.3V - (Connected in 900-9D3B4-00CC-
EA0 & 900-9D3B4-00SC-EA0 only)
PCIe Reset
Host Reference Clock
Host Reference Clock
Pin
Signal
#
Name
B1
12V
B2
12V
B3
12V
B4
GND
B5
SMCLK
B6
SMDAT
B7
GND
B8
3.3V
B9
TRST#
B10
3.3V_AUX
B11
WAKW#/RSVD
B12
RSVD
B13
GND
B14
PETP0
B15
PETN0
B16
GND
B17
RSVD
B18
GND
B19
PETP1
B20
PETN1
B21
GND
B22
GND
B23
PETP2
B24
PETN2
B25
GND
to PCI
Description
Host SMBus
Host SMBus
3.3V - (Connected in
900-9D3B4-00CC-EA0
& 900-9D3B4-00SC-EA0
only)
JTAG - Not Connected
27
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