uneron ESOM3735Z Tiny Windows 10 Compute Module User Manual

: June 5, 2024
: uneron

eSOM3735z
Hardware Manual

Introduction

The eSOM3735z is an easy-to-use 204 pin core board based on the power- efficient quad-core Atom Z3735G processor from Intel’s 22nm Bay Trail line clocked at 1.33 – 1.83 GHz. It has 2MB L2 cache and integrated Intel HD Graphics GPU clocked at 311MHz to 646MHz.
The eSOM3735z comes with 1GB DDR3L RAM. The eMMC unit is designed modular and
plugged into the scoreboard through two 60pin specific connectors. The eMMC modules exist in 32GB with 8bit Bus width by default, and it is customizable with 8 16, and 64GB versions. Upgrade, repair, and troubleshooting in this way is easy, quick, and cost-effective and improve maintenance ability.
The eSOM3735z integrated a PMU that reduces the complexity of the external power supply. The eSOM3735z support dual-channel video output HDMI and MIPI- DSI interfaces with 24-bit depth color resolution. This SOM has extra IO interfaces like HDMI, LCD, Ethernet, USB, GPIO, UART, I2C, and SPI that users can access through DDR3-SODIMM 204 pin straight connector that enables hardware customization and gives more hardware flexibility to various projects.
The eSOM3735z can boot Windows 10 very quickly and allows x86 developers to use the single board software development without having to learn about embedded systems such as ARM processors. In addition, it is integrated with many peripherals such as GPIOs, and users’ challenge with microcontrollers is eliminated. It is a perfect platform for x86 developers to make devices like Thin client, HMI, Vending Machines, IoT, etc.

Features

Intel Atom® Z3735G quad-core processor (2M Cache, up to 1.83 GHz) with Intel HD graphics
1GB DDR3L RAM
Up to 64GB Replaceable eMMC module
Support multiple displays HDMI, MIPI-DSI interfaces.
Support 16x GPIO directly programmable
Flexible hardware customization using DDR3-SODIMM 204 pin connector
Very quick and easy OS installation through USB disk
Windows 10 fast startup

Specification

Characteristic	Standard	Customizable	Comment

Graphics Engine

| Intel® HD Graphics for Intel Atom® Processor Z3700 Series 3D Hardware Acceleration (DirecX*11, OCL 1.2, OGL ES Halti/2.0/1.1, OGL 3.2)

Video Decode Hardware Acceleration (H.264, MPEG2, MVC, VC-1, WMV9, VP8) Video Encode Hardware Acceleration (H.264, MPEG2, MVC)

| |
Camera| –| Dual MIPI-CSI Camera channel 1- Rear Camera 2- 8MP (Dual Lane)|
| | 2- Front Camera 0.3MP (Single Lane)|
---|---|---|---
**** Analog Sound| HeadSet MIC(Mono) LineOut(Stereo)| |
Connectivity
USB| 1 USB Host Root

4 USB Host Over HUB

| –|
UART| **** 3| **** –| 1 (RX,TX) + 2 (RX, TX, RTS, CTS)
One Normal UART (up to 115,200bps)
Two HS UART (Up to 3,686,400bps)
SPI| –| –|
I2C| 3| 4|
Ethernet| 1 (10/100)| –| Over USB
CAN| –| –|
SDIO| 1 (4bit SD-Card Reader)| –|
Analog Input| –| –|
GPIO| 16| 25|
OS
Windows| 10| EFI Installer OS| 32 bit
Physical
Size| 67.6 x 52.3 x 3.9| |
Working Temperature| 0 to +70| |

Electrical Specification

Symbol	Value	Comment

Power

| ****

3.7 to 4.2V 1500mA (Max)

Block Diagram

Mechanical Drawing

Dimension

PCB| 6 Layer, ENIG, 0.8mm
Weight| 15g
Size| 67.6mm × 52.41mm × 3.9mm

eMMC

The eSOM3735z storage is based on eMMC modules, this module is designed modular and install on the scoreboard through two 60pin specific connectors. By default, a 32GB eMMC with 8bit BUS width is installed on eSOM3735z, and it is customizable with 8, 16, and 64GB versions. therefore, users are free to select eMMC modules upon their needs. Upgrade, repair, and troubleshooting are easy, quick, and cost-effective in this approach and Improve maintenance ability in mass production.

PIN Description

The eSOM3735z has DDR3-SODIMM 204 pin form factor, the diagrams in the following figures show the pin numbering schema:

For set up of eSOM3735z, users need to design their carrier board. In addition, eDVK3735z is a standard 4-layer PCB carrier board designed for eSOM3735z, users can design their carrier board even 2-layer PCB but a 4-layer PCB for their carrier boards is recommended.

Following image shows pin assignment is used for eDVK3735z carrier board.

Power pin

Following table explained power pins in eSOM3735z:

Power Signals	Core PIN number	Description
DGND	10

Digital Ground

Main Power: 3.7 to 4.2VDC

In eDVK3735z power circuit is implemented as the following figure, the power input voltage is acceptable from 7.5 to 24VDC and users can plug power from the power jack and PWR_HDR 4pin XH Socket. The Development board also has 4pin XH Socket battery input and users can connect LiIon 3.7V to 4.2VDC for battery-powered applications.

Development board converts input power to +5VDC through a 3.5A, 1MHz Step-Down Converter. Output of this stage is used for VBUS pins of the scoreboard. VBUS is used for USB and its voltage is very important and must be +5V DC for good performance. This voltage is also used
Battery charger circuit. In addition, VBUS converted to +3.3VDC through two independent circuits for power 4G and another circuit like USB HUB.

The Development board also converts input power to +4.2VDC. Output of this stage is used for VBAT pins of cardboard.
An RTC battery holder is considered in eDVK3735z to power up VRTC of coreboard and can power with CR1220 coin batteries with +3VDC.

Display and Touch

The eSOM3735z supports HDMI and MIPI-DSI protocols for video outputs. The following tables list HDMI and MIPI signals on the eSOM3735z coreboard:
In eDVK3735z an HDMI connector is considered, a 30 pins FPC connector is also used for connecting to MIPI LCDs. Currently capacitive and resistive touch is implemented through a USB interface, and I2C signals is included in FPC pins for developers who want to customize touch with an I2C interface.

HDMI Signal s	Core PIN
HDMI_TX2_N	95
HDMI_TX2_P	97
HDMI_TX0_N	101
HDMI_TX0_P	103
HDMI_TX1_N	107
HDMI_TX1_P	109
HDMI_CLK_N	113
HDMI_CLK_P	115
HDMI_DDC_SDA	106
HDMI_DDC_SCL	108
HDMI_HPD	110

MIPI-DSI Signal s Core PIN

DDI1_VDDEN| 12
DDI1_BKLTEN| 14
DDI1_BKLT_EN| 16
MDSI_A_CLK_N| 20
MDSI_A_CLK_P| 22
MDSI_A_DATA0_N| 26
MDSI_A_DATA0_P| 28
MDSI_A_DATA1_N| 32
MDSI_A_DATA1_P| 34
MDSI_A_DATA2_N| 38
MDSI_A_DATA2_P| 40
MDSI_A_DATA3_N| 44
MDSI_A_DATA3_P| 46
DISP_PWM_BKLT_EN| 50
Touch signals| Core PIN number| FPC connector PIN
---|---|---
I2C0_SCL| 18| 2
I2C0_SDA| 20| 3
GPIO3[17]| 36| 4
GPIO3[18]| 38| 5
HUSB4_P| –| 7
HUSB4_N| –| 8

Sound

The eSOM3735z supports audio output and input functions. Following table describes assigned pins for audio functions.

Sound Signal	Core PIN number
HP_MIC	133
HP_JACK	135
HP_R	137
HP_ L	139
ANALOG_MIC_N	132
ANALOG_MIC_P	134
SPKR_LP	138
SPKR_LN	140

In eDVK3735z a headset connector is integrated, the following figure shows this connector and associated pins, HP_L and HP_R signals are used for audio output and HP_MIC is considered as audio input.

GPIO

Some of eSOM3735z pins can be used as GPIO, by default this scoreboard support 16 GPIO, these pins are specified in the following table:

GPIO Signals	Core Pin number
GPIO_S0_SC_0	112
GPIO_S0_SC_1	114
GPIO_S0_SC_2	153
GPIO_S0_SC_3	52
GPIO_S0_SC_100	66
GPIO_S5_12	64
GPIO_S5_22	23
GPIO_S5_24	25
GPIO_S5_28	31
GPIO_S5_29	35
GPIO_S5_30	37
GPIO_S0_NC_16	39
GPIO_S0_NC_19	143
GPIO_S0_NC_23	145
GPIO_S0_NC_24	147
GPIO_S0_NC_25	149

All IO ports have a 1.8V voltage level. If you are using eDVK3735z, some of GPIOs are accessible through a 2×12 pin header as shown in the following figure:

UART

eSOM3735z support One Normal UART (up to 115,200bps) and Two HS UART (Up to 3,686,400bps). Respective pins are described in the following table:

UART Signals	Core PIN number
UART_1_RXD	127
UART_1_TXD	125
UART_1_RTS	123
UART_1_CTS	121
UART_2_RXD	128
UART_2_TXD	126
UART_2_RTS	124
UART_2_CTS	122
UART_3_RXD	199
UART_3_TXD	197

UART1 and UART2 are high-speed UART. In eDVK3735z these HS UARTs are accessible through 2 connectors at the bottom of this development board as shown in the following figures:

In eDVK3735z, UART1 is also used as RS485 communication, a jumper is considered to select or deselect this UART to act as RS485 or another function. If the jumper is placed, UART2_RXD acts as the RS485 receiver’s signal.

In eDVK3735z UART3 is considered as RS232 communication and a DB9 port is integrated with this development board.

I2C

The eSOM3735z supports three I2C communication by default, following table listed pins was assigned to I2C in this coreboard:

I2C Signals	Core PIN number
I2C_0_SDA	70
I2C_0_SCL	72
I2C_1_SDA	89
I2C_1_SCL	87
I2C_2_SDA	118
I2C_2_SCL	120

In eDVK3735z, I2C0 signals are also included in FPC pins for developers want to customize touch with I2C interface. In addition, I2C0 is accessible through eMOD connector mounted on the bottom of this carrier board.
I2C1 and I2C2 are accessible in 2×12 pin header PORT connector. I2C1 is also connected to Camera FPC connectors for user development.

USB

The eSOM3735z support 1 USB Host Root and 4 USB Host Over HUB. These pins are listed in the following table:

USB SIGNALS	Core PIN number
USB1_N	173
USB1_P	175
USB2_N	179
USB2_P	181
USB3_N	185
USB3_P	187
USB4_N	191
USB4_P	193
USB2_MUX_P	17
USB2_MUX_N	19

In eDVK3735z these USB2_MUX BUS is acquired with 1 USB HUB ICs and extended to 4 USB BUS. Finally, eDVK3735z development board have 8 USB Buses.
These USB Buses is used for various purposes in eDVK3735z as shown in the following table:

USB SIGNALS	Core PIN number
HUSB0	eMOD connector
HUSB1	mini PCIe Slot
HUSB2	USB Stacked Port
HUSB3	USB HDR Port
HUSB4	MIPI LCD connector
HUSB5	Wi-Fi module
HUSB6	USB Stacked Port
HUSB7	USB HDR Port

In eDVK3735z HUSB5 is acquired for WiFi module as shown in the following figure:
In eDVK3735z HUSB1 is acquired for miniPCIe module(only USB functions supported) as shown in the following figure:

Ethernet

The eSOM3735z supports (10/100) Ethernet communication over USB. Associated pins are accessible through 204 pin SODIMM connector as listed in the following table: