3. INTRODUCTION & PRODUCT CONFIGURATIONS

This page introduces the Gemini Carrier Card & describes the different product configurations.

3.1 Introduction

3.1.1 Gemini COM-based SBC

Gemini COM-based SBC is the newest addition to Diamond Systems product-line that integrates the latest generation of the embedded COM Express® Compact cExpress-WL 8665UE Type 6 Module from ADLINK, featuring Intel® 8th Generation Quad-core i7 processor, and PCI/104-Express Expansion.

Gemini COM-based SBC offers a scalable embedded system infrastructure that significantly enhances performance, power efficiency, and optimized I/O capabilities.

The SBCs mechanical dimensions slightly exceed the dimensions of the COM Express Compact form factor and PC/104 specification form factor so that mounting hole patterns of both form factors can be accommodated. This also allows additional space for I/O connectors.

The PCI/104-Express expansion sockets are located on the top side of the board. The COM Express module is mounted on the bottom side of the board.

The SBC is a multi-layer Printed Circuit Board that is designed on a thicker scale measuring .090” (2.3 mm). This enables the carrier board to operate reliably in mobile and harsh environmental applications.

The following table summarizes the on-board key features, components, and specifications of the Gemini COM-based SBC.

Feature	Specification
Module	cExpress-WL-8665UE Type 6 Compact module based on Intel® 8th Generation Quad-core i7 processor.
Audio Interface	High Definition Audio (IHDA) to Analog Audio Converter Via ALC892-CG CODEC
Digital I/Os	8 Direction Programmable, 3.3V Logic Compatible
VIH	2.31V
VIL	0.6V
VOH	2.9V @ -10mA
VOL	0.6V @ 25mA
Display Connectors	2x HDMI 1.4a High-Efficiency Video Coding (HEVC)); 1 x Dual Channel 24-bit LVDS Port with 3.3V and 5V Power Range @ Maximum Resolution 1920x1200
Ethernet Controller	ETH-1 10/100/1000Mbps I219 Ethernet controller Routed from COM Module ETH-2 10/100/1000Mbps Routed from Intel I210 Ethernet Controller
LCD Backlight Connector	LCD Backlight Power and Control Signals with 5V and 12V Power Option
Memory Type	Maximum 64 GB 2133/2400MHz DDR4 on two DDR4 sockets. Maximum 32 GB per socket.
Mass Storage	1x 7 pin SATA GEN 3.0 connector for HDD 1x M.2 SATA GEN 3.0 Socket 2242 (22mm Wide x 42mm Long)
PCI/104-Express Expansion Buses	1x PCIe MiniCard; 1x PCI/104 Express Stacking
SATA Ports	2 Ports: 1 M.2 and 1 Standard SATA
Serial Ports	4 RS-232/422/485 Ports. Software configurable through SP336 Transceivers
TPM (Trusted Platform Module)	TPM 2.0 via an SPI Interface
USB Ports	4x USB 2.0 to Standard Header
	2x USB 3.1 Gen2 to Standard Header
	1x USB 2.0 Muxed between mPCIe and USB to GPIO interface
Utility	1x I2C, Power Button, Reset Button, LPC for ISA expansion, 5V @ 2A Power Supply
Operating System Support
Standard Support	Windows 10 64-bit
	Optional 32-bit dependent on COM BIOS installed
	Ubuntu LTS 64-bit (TBD)
	Yocto Project-based Linux 64-bit
	CentOS 64-bit (TBD)
	Yocto Project-based Linux 64-bit
Mechanical, Electrical, and Environmental Specification
Form-Factor	L 4" x W 4" (101.6 mm x 101.6 mm)
Weight	TBU
Cooling Mechanism	Conduction Cooling with Heat Spreader, Bottom Side.
Heat Spreader	L 4.6" x W 4"
DC Power Input Voltage	12V-28VDC(+/- 10%). Wide Input Supply Range
Power Consumption	36W with no load, 95W fully loaded.
Ambient Operating Temperature Range	-40°C to +85°C (-40°F to +185°F) dependent on COM installed
RoHS (Restriction of Hazardous Substances)	Compliant

3.1.2 Gemini Peripheral current supported

The following table shows the current supported on each peripheral which supports add-on cards or devices by Gemini.

Sl. No	Peripheral	Voltage(V)	Current/Port(A)
1	PCI/104 or PCIe/104	12	1
2	PCI/104 or PCIe/104	5	2
3	PCI/104 or PCIe/104	3.3	0.5
4	mPCIe	3.3	1.1
5	USB3.0(2 ports)	5	0.9
6	USB2.0(4 ports)	5	0.5
7	M.2 SSD	3.3	0.5
8	Utility	5 Fused	0.5
9	Utility	3.3 Fused	0.5
10	Utility	5 non Fused	2

3.2 Gemini Configurations

Gemini is offered with cExpress-WL-8665UE Intel 8th gen i7 processor in the following configurations

Feature variations	GEM-BB01 16GB	GEM-BB01 32GB	GEM-BB01 64GB
COM Module	cExpress-WL-8665UE	cExpress-WL-8665UE	cExpress-WL-8665UE
Memory	1 16GB DDR4	2 16GB DDR4	2 32GB DDR4
PCIe Switch	No	No	No
PCI/104 Express	4 x1 PCIe lane 1 USB 2.0	4 x1 PCIe lane 1 USB 2.0	4 x1 PCIe lane 1 USB 2.0

Gemini is designed also to support other higher and lower end COM modules. Contact DSC support for ordering Gemini configured for lower end COM modules.

Gemini is also available as a carrier card for type 6 compact form-factor COM modules. The below table lists the carrier card feature list and corresponding SBC features:

Feature List	Carrier card	SBC
PCIe	Module dependent	8 PCIe gen3 x1 lanes
Serial ports	4 RS232, RS422, RS485	4 RS232, RS422, RS485
Ethernet	1 module dependent 10/100/1000, 1 i210 10/100/1000	1 from module 10/100/1000, 1 i210 10/100/1000
LVDS LCD	Dual-channel LVDS	Dual-channel LVDS, max resolution 1920x1080@60Hz
HDMI	2x HDMI 1.4b ports. HDMI version is module dependent	2x HDMI 1.4a ports.
Expansion sockets	PCI-104, PCIe/104, mPCIe socket	PCI-104, PCIe/104, mPCIe socket
Storage	M.2 SATA SSD, Standard SATA connector	M.2 SATA SSD, Standard SATA connector
GPIO	8 GPIOs @ 3.3V	8 GPIOs @ 3.3V
Audio	Line-in, Line-out, Mic	Line-in, Line-out, Mic
TPM	TPM 1.2	TPM 1.2

Note: Any COM module feature not listed above is not available when used with the Gemini baseboard.