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12048231 Rev. 00 (Draft)
DATA MODUL AG | www.data-modul.com
4.29. Data Modul Feature Connector
Reference Designator:
– J51
1,27mm pitch dual-row SMT pin-header straight, 40 circuits
Description
The Data Modul feature connector covers minor system interfaces and status signals together with some power
supply signals to provide an easy way for system designers to monitor the status of an embedded board, initiate
different events and receive support for the system development process.
Interfaces used
SMARC control signals
I2C General purpose (GP) and power management (PM) bus
UART from carrier-board-board controller STM32 (for internal use only)
SMARC GPIOs [0..7]
Connector drawing and contact-numbering scheme
Figure 38 Connector
– J51
Pinout
J51
Pin
Signal / Function
Pin Type
Signal Description
1
GND
GND
Connected to ground potential of the PCB
2
V_5V0_S0
Power
5.0V (S0) power supply for attached device (max.500mA)
3
VIN_PWR_BAD#
O (OD, 1.8 - 5V)
Power bad indication from CB. Module and CB power
supplies shall not be enabled while this signal
is held low by the CB.
A pull-up must be implemented on the SMARC module.
Driven by OD on CB
4
PWRBTN#
I(OD, 3.3V)
A falling edge creates a power button event. Power
button events can be used to bring a system out of
S5 soft off and other suspend states, as well as
powering the system down. Power button events can be
generated and monitored through the feature connector.
This signal is being de-bounced by the embedded board,
tactive, min=25ms
5
CB_RESET#
O (CMOS 3.3V)
Platform reset is a reset signal generated by the SMARC
module.
6
GND
GND
Connected to ground potential of the PCB
7
CB_STBY#
O (CMOS 3.3V)
The SMARC module drives this signal low when the
system is in a standby power state. The CB switches all
S0 power rails off.
