Technical information
8.5 Hardware descriptions
SIMATIC IPC477D, IPC477D PRO
Operating Instructions, 11/2016, A5E31347228-AF
233
Pin assignment for the PCIe-x4 card interface
2 +12 V 12 V power +12 V 12 V power
4 GND Ground GND Ground
5 SMCLK SMBUS (System Manage-
ment Bus) clock
JTAG2 TCK (Test Clock), clock
input for JTAG interface
6 SMDAT SMBus (System Manage-
ment Bus) data
JTAG3 TDI (Test Data Input)
7 GND Ground JTAG4 TDO (Test Data Output)
8 +3.3 V 3.3 V power JTAG5 TMS (Test Mode Select)
9 JTAG1 TRST# (Test Reset) resets
the JTAG interface
+3.3 V 3.3 V power
Signal for link reactivation
13 GND Ground REFCLK+ Reference clock (differen-
tial pair)
14 PETp0 Transmitter differential pair,
REFCLK- Reference clock (differen-
15 PETn0 Transmitter differential pair,
GND Ground
16 GND Ground PERp0 Receiver differential pair,
17 PRSNT2# Hot-plug presence detect
PERn0 Receiver differential pair,
Lane 0
19 PETp1 Transmitter differential pair,
RSVD Reserved
20 PETn1 Transmitter differential pair,
GND Ground
21 GND Ground PERp1 Receiver differential pair,
22 GND Ground PERn1 Receiver differential pair,