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3.3 Connectors description
3.3.1
DDR4 SO-DIMM Sockets
CPUs used on the SBC-C90 board provide support to DDR4 SO-DIMM Memory Modules, up to 32GB total, which can be integrated by using the dedicated DDR4
SO-DIMM sockets CN2 and CN3. Both ECC and non-ECC memory modules are supported.
All processors support DDR4-2400 memory module, with the exception of V1807B and V1756B, which are able to support DDR4-3200 modules.
For use of these memories, on board there are two SO-DIMM DDR4 sockets.
CN2 is type LOTES p/n ADDR0110-P003A or equivalent, a right angle, high profile socket, h = 9.2mm.
CN3 is type LOTES p/n ADDR0067-P005A or equivalent, a right angle, high profile socket, h = 5.2mm.
Both of them are usually used for high speed system memory applications.
3.3.2
Front Panel Header
Buttons / LED Header
Pin
Signal
Pin
1
HD_LED_P
3
HD_LED_N
5
RST_SW_N
7
RST_SW_P
9
---
The power button input (pins #6 and #8) is also connected to the on-board power button SW2, located on the top side of the board.
Signals Description:
HD_LED_P: Hard Disk Activity LED signal's pull-up to +5V_RUN voltage (510Ω pull-up).
HD_LED_N: Hard Disk Activity LED output signal
RST_SW_N: Reset Button GND
RST_SW_P: Reset button input signal. This signal has to be connected to an external momentary pushbutton (contacts normally open). When the pushbutton is
pressed, the pulse of Reset signal will cause the reset of the board. +3.3V_ALW electrical level with 4.7kΩ pull-up.
SBC-C90
SBC-C90 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by C.M. Copyright © 2021 SECO S.p.A.
To allow the integration of the SBC-C90 board inside a box PC-like, there is a connector on
CN6
the board that allows to remote signals for the Power Button (to be used to put the system in a
Soft Off State, or awake from it), for the Reset Button, and the signal for optional LED signaling
Signal
activity on SATA Channel and Power On states.
2
FP PWR_P/SLP_N
The pinout of this connector complies with Intel
4
FP PWR_N/SLP_P
Switch/LED Front Panel section, chapter 2.2. It is shown in the table on the left.
6
PWR_SW_P
Connector CN6 is an internal 9-pin standard male pin header, p 2.54 mm, 5+4
pin, h= 6mm, type NELTRON p/n 2213SM-10G-E10 or equivalent.
8
PWR_SW_N
®
Front Panel I/O connectivity Design Guide,
24
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