Sm Bus; I 2 C Digital I/O; Table 38 X50/X51 Pinout Description - Congatec COM Express conga-MEVAL Manual

5.12

SM Bus

The SM Bus signals are available on the feature connector X53 described in section 5.22 "Feature Connector". The SM Bus on the module is
powered by the standby power rail.
5.12.1 I C Digital I/O
2
The conga-MEVAL provides two GPIO expansion headers (X50 and X51) for I
supply via a 16-bit I2C I/O expander (PCA9555).
The I2C device address for the expansion headers is 0x4E (least significant bit is set to a write operation). The table below describes the X50/
X51 pinout. For more information, contact the congatec technical support team.
Table 38 X50/X51 Pinout Description
Pin Signals Description
1 GND Ground
3 GND
5 GND
7 GND
9 GND
11 GND
13 GND
15 GND
17 BATLOW# COM Express
BATLOW# signal
19 3.3 V 3.3 V supply
Connector Type
X50, X51: 2x 10-pin, 2.54mm grid female
Copyright © 2022 congatec GmbH
X50
Pin Signals Description
2 IO0_0 Port 0 input/output 1
4 IO0_1
6 IO0_2
8 IO0_3
10 IO0_4
12 IO0_5
14 IO0_6
16 IO0_7
18 INT# Interrupt output
20 3.3 V 3.3 V supply
C applications. The GPIO signals are provided with 3.3 V power
2
X51
Pin Signals Description Pin
IO1_0 Port 1 input/output 2
3 IO1_1 4
5 IO1_2 6
7 IO1_3 8
9 IO1_4 10
11 IO1_5 12
13 IO1_6 14
15 IO1_7 16
17 INT# Interrupt output 18
19 3.3 V 3.3 V supply 20
CET0m10
Signals Description
GND Ground
GND
GND
GND
GND
GND
GND
GND
BATLOW# COM Express
BATLOW# signal
3.3 V 3.3 V supply
X50, X51
1 2
3 4
5 6
7 8
9 10
11 12
14
13
15 16
17 18
19 20
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