# Express-BASE6 R3.1

COM Express® R3.1 Comply Type 6 Reference Carrier Board in ATX Form Factor

![The image features a blue, oval-shaped graphic tilted diagonally upwards to the right. Inside the oval, the word 'Preliminary' is written in white, sans-serif capital letters. In the bottom right corner, a small portion of a green square icon is visible.](.express-base6-r31-preliminary-datasheet-20220928/c62ddcd35bf4c2203a6e852c449361f80df248f1e1005c16f5c55d2fbb3cd57e.jpg)

![Green printed circuit board with various electronic components and connectors (no visible text or symbols)](.express-base6-r31-preliminary-datasheet-20220928/4751ac3c42e028b410c19414ad1cb132287c325451509740c80ae1779f93ad5a.jpg)

Specifications

<table><tr><td>Core Module Interface</td><td>PICMG COM Express Revision 3.1Support R3.1 Type 6 modules Basic / Compact size</td></tr><tr><td>Dimension</td><td>305 mm x 244 mm (ATX)</td></tr><tr><td>Expansion Busses</td><td>1x PCI Express x16 slot1x PCI Express x4 slot (PCIe lane 0-3)4x PCI Express x1 slot (PCIe lane 4, 5, 6, 7)</td></tr><tr><td>POST LEDs</td><td>Onboard diagnostics for BIOS POST code data on LPC bus</td></tr><tr><td>Secondary BIOS</td><td>Onboard socket for secondary SPI flash</td></tr><tr><td>COM Express Connectors</td><td>Two x 220-pin (8mm height)</td></tr><tr><td>HDMI</td><td>HDMI vertical connector on Rear I/O (DDI 3)</td></tr><tr><td>USB4</td><td>2x USB4 at Type C on Rear I/O*</td></tr><tr><td>VGA</td><td>DB15 on Rear I/O*</td></tr><tr><td>Flat Panel</td><td>34-pin header LVDS (build option for eDP*)</td></tr><tr><td>Audio</td><td>Mic/Line-in/Line-out on Rear I/O S/PDIF on Rear I/O</td></tr><tr><td>SATA</td><td>4x SATA (with power for SATA device)</td></tr><tr><td>USB</td><td>4x USB 3.x/2.0/1.1 Type A on Rear I/O2x USB 2.0/1.1 Type A on Rear I/O2x USB 2.0/1.1 at 9-pin header for front panel</td></tr><tr><td>LAN</td><td>2500/1000/100/10BASE-T compatible RJ45 on Rear I/O</td></tr><tr><td>GPIO/SD</td><td>8-pin header GPIO, SD card slot*</td></tr><tr><td>Serial Port</td><td>1x DB-9 (from Super I/O) on Rear I/O3x 10-pin header</td></tr><tr><td>FAN</td><td>1x 4-pin FAN connector (from COMe module)2x 4-pin FAN connector (from Super I/O)</td></tr><tr><td>Feature Connectors</td><td>Headers for SMBus, I2C, LPCHeader for front panel usageOthers for module control signals</td></tr><tr><td>Miscellaneous</td><td>BTN (ON/OFF, Reset, SLEEP, LID), LED, Buzzer</td></tr></table>

\* Interface and signal compatibility is subject to the module and carrier used.

# Ordering Information

# Carrier

Express-BASE6 R3.1

COM Express® Type 6 R3.1 Reference Carrier Board in ATX Form Factor

# Block diagram

![This block diagram illustrates the connectivity between two central buses, labeled **AB** and **CD**, and various peripheral blocks.\n\n**Bus AB Connections (Left Side)**\n*   **34 pin LVDS** and **eDP** (labeled **build option**) connect to bus **AB**.\n*   **SATA 0**, **SATA 1**, **SATA 2**, and **SATA 3** connect to bus **AB**.\n*   **PCIe 0-3 (x4)**, **PCIe 4**, and **PCIe 5** connect to bus **AB**.\n*   **HDA** connects bus **AB** to the **Audio Codec ACL888**.\n*   **LPC** connects bus **AB** to the **Super I/O NCT6126D**.\n*   **Analog VGA** connects the **Super I/O NCT6126D** to bus **AB**.\n\n**Intermediate Blocks and Connections**\n*   **USB 4 (2.0/1.1)** and **USB 5 (2.0/1.1)** connect from bus **AB** to a block containing **TBT4 JHL8540** and **USB PD**. These outputs connect to **USB4 1** and **USB4 2** respectively, which lead to bus **CD**.\n*   **LAN (2.5GbE)** connects to a network port icon.\n*   **USB 2 (2.0/1.1)** and **USB 3 (2.0/1.1)** connect to USB ports, which output to **USB 2 (3.x)** and **USB 3 (3.x)**.\n*   **USB 0 (2.0/1.1)** and **USB 1 (2.0/1.1)** connect to USB ports, which output to **USB 0 (3.x)** and **USB 1 (3.x)**.\n*   **USB 6 (2.0/1.1)** connects to a header.\n*   **USB 7 (2.0/1.1)** connects to a **USB Hub**, which outputs **2x** to a **9-pin pitch 2.54** header.\n*   **MUX** connects to an **SD Slot** and an **8-pin GPIO pitch 2.54** header.\n*   **SER 0/1** connects to two headers.\n*   **I2C, SMB** connects to a header.\n*   **Feature, Controls** connects to a header.\n*   **SPI** connects to a switch.\n*   The **Audio Codec ACL888** outputs to a 3-color jack and **S/PDIF**.\n*   The **Super I/O NCT6126D** connects to **Port 80**, **RS-232 pitch 2.54**, and **FAN**. It also connects to **SP339**, which leads to **RS-232/485**.\n\n**Bus CD Connections (Right Side)**\n*   **PCIe 16-31 (x16)** connects bus **CD** to a large slot.\n*   **DDI 3** connects bus **CD** to **HDMI**.\n*   **PCIe 6** connects bus **CD** to a slot.\n*   **PCIe 7** connects bus **CD** to a slot.](.express-base6-r31-preliminary-datasheet-20220928/8eed56868fdc79b301599df216dda44240b542ca728cfab88e4184d8fcfbec66.jpg)
[🔗 Link to the original document](.express-base6-r31-preliminary-datasheet-20220928/express-base6-r31-preliminary-datasheet-20220928.pdf)