iMX6 Rex Projects » Martin Murin

Development Baseboard for iMX6 Rex Module

Martin Murin — Thu, 10 Oct 2013 07:02:32 +0000

The iMX6 Rex Development Baseboard connects all the peripherals from the module and adds extra wireless support.

iMX6 Rex Development Baseboard specification (may change)

1x 1Gb Ethernet
1x HDMI with Audio support, 1x LVDS + Backlight Connector
Digital audio codec: Microphone in, Line in/out, Headphones
1x mini PCIE (USB Only), SIM socket. Use with GPRS / 3G and other wireless modems. Includes also modem VOICE support (Microphone in, Line in, Speakers)
1x mini PCIE with SIM socket (or Optional: x1 PCI Express Slot, 1x USB host on header). Use with any mini PCIE cards such Wifi, Wireless modem, …
3x USB (or Optional: 1x OTG USB)
Soldered down MMC NAND FLASH (up to 64GB)
1x CFAST (or Optional: SATA connector)
1x micro SD socket, 1x EEPROM
1x RS232, 1x Serial port (CMOS / TTL), 1x SPI on header
8x General purpose Input / Output pins. Can be used for buttons, LEDs, …
Battery backed up Real time clock
User LED, Power LED, MMC Activity LED
User Button, Reset Button, ON / OFF Button
JTAG
Input voltage 7 to 24 DC (or Optional: ATX connector)

See the full block diagram here. Schematic & PCB will be open source and once the files are ready we will upload them here.

Final DDR3 Memory Layout & Length Calculator Spreadsheet

Martin Murin — Fri, 20 Sep 2013 18:33:51 +0000

We finished whole DDR3 memory interface. This spreadsheet was used to length match signals according to Design Guide. You can also see our progress in updated Project Design files here.

We are now ending optimization of signals in inner layers. Layout of board will be finished soon.

IO Mux Design Tool Files

Martin Murin — Tue, 27 Aug 2013 15:44:06 +0000

Check our iMX6 Rex Module Mux files for Dual and Quad processors or for Dual Lite processors available for download. The IO Mux Design software is located here (log in on Freescale page is required).

3D Model PDF Document

Martin Murin — Wed, 21 Aug 2013 06:36:44 +0000

We created a 3D PDF document of board with final placement. You can download it from here. To enjoy the model you will need Adobe Reader installed.

Almost done

Martin Murin — Tue, 20 Aug 2013 11:38:17 +0000

We done almost all preliminary layout. Components, also the smallest ones, are placed in their position. We created new 3D model with real placement under BGAs.

Some new schematic updates. Download updated Schematic pdf here and Altium Design files here. Older schematics and project files are still available in this folder.

PCB Stackup and Project Design files

Martin Murin — Thu, 01 Aug 2013 07:40:59 +0000

DDR3 preliminary layout done. We set up rules for differential pair impedances. A module use 12 layer board with this stackup.

We also uploaded complete Altium files, not finished yet. Feel free to download them here.

Video: iMX6 DDR3 memory layout – Preliminary connections

Martin Murin — Mon, 29 Jul 2013 06:29:57 +0000

iMX6 Rex is moving ahead. Curious how the DDR3 preliminary layout has been done?

Watch this video. Apart from the memory layout process, it shows also component placement under CPU:

Components purchased – getting closer to layout

Martin Murin — Wed, 03 Jul 2013 11:07:38 +0000

After schematic checking, we ordered all the required components. The complete Bill of Material excel sheet is available for download here. BOM Total: $116USD / 1000pcs (for CPU 1GHz, QUAD Core, DDR3 1GB)

When the order is delivered, I will compare our footprints with physical components. After this I will enjoy the layout.