Technical information
8.5 Hardware descriptions
SIMATIC IPC477E
148
Operating Instructions, 11/2020, A5E37455003-AF
8.5.2
Internal ports
8.5.2.1
PCIe card
Pin assignment for the PCIe-x4 card interface
Pin no.
Side B
Side A
Name
Description
Name
Description
1
+12 V
12 V power
PRSNT1#
Hot-plug presence
detect
2
+12 V
12 V power
+12 V
12 V power
3
+12 V
12 V power
+12 V
12 V power
4
GND
Ground
GND
Ground
5
SMCLK
SMBUS (System Management
Bus) clock
JTAG2
TCK (Test Clock), clock
input for JTAG inter-
face
(not connected)
6
SMDAT
SMBus (System Management
Bus) data
JTAG3
TDI (Test Data Input)
(not connected)
7
GND
Ground
JTAG4
TDO (Test Data Out-
put)
(not connected)
8
+3.3 V
3.3 V power
JTAG5
TMS (Test Mode Se-
lect)
(not connected)
9
JTAG1
TRST# (Test Reset) resets the
JTAG interface
(not connected)
+3.3 V
3.3 V power
10
3.3 Vaux
3.3 V auxiliary power
+3.3 V
3.3 V power
11
WAKE#
Signal for link reactivation
PERST#
Fundamental reset
12
RSVD
Reserved
GND
Ground
13
GND
Ground
Reference clock (dif-
ferential pair)
14
PETp0
Transmitter differential pair,
Lane 0
REFCLK-
Reference clock (dif-
ferential pair)
15
PETn0
Transmitter differential pair,
Lane 0
GND
Ground
16
GND
Ground
PERp0
Receiver differential
pair, Lane 0
17
PRSNT2# Hot-plug presence detect
(not connected)
PERn0
Receiver differential
pair, Lane 0
18
GND
Ground
GND
Ground
19
PETp1
Transmitter differential pair,
Lane1
RSVD
Reserved