AxelEVB-Lite-Adapter (AxelLite)

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Info Box
Axel-lite 02.png Applies to Axel Lite

Introduction

Axel Lite requires a dedicated adapter to be plugged to the AxelEVB-Lite carrier board. This adapter:

  • provides the SODIMM socket for the AxelLite SOM
  • provides the following additional features:
    • microSD slot (for SD boot)
    • JTAG connector
    • dip-switch for boot mode selection
  • routes the signals from the AxelLite pins to the AxelEVB-Lite mating connectors


200px-Emblem-important.svg.png This page provides information for the AxelEVB-Lite Adapter board model S-XLADP0000I1R (BOM 2.0.0), provided with XELK kits version 2.1.0 and above. If you have a board from a previous version of the XELK kit (older than 2.1.0), please contact support-axel@dave.eu. 200px-Emblem-important.svg.png

The following images show the top and bottom views of the AxelEVB-Lite-Adapter:

Top view
Bottom view

Connectors' pinout

J6 - SODIMM connector

J6 is a TE Connectivity 204-pin SODIMM socket. The pinout matches the Axel Lite pinout.

J1, J2, J3 - AxelEVB-Lite mating connectors

J1, J2 and J3 are Hirose FX8C-140S-SV connectors that match the AxelEVB-Lite SOM connectors' pinout.

J4 - JTAG

J4 is a SAMTEC FSI-110-03-G-S connector. The following table reports the connector's pinout:

Pin# Pin name Function Notes
1 DGND - -
2 JTAG_TCK - -
3 JTAG_TMS - -
4 JTAG_TDO - -
5 JTAG_TDI - -
6 JTAG_nTRST - -
7 CPU_PORn - -
8 N.C. - -
9 N.C. - -
10 JTAG_VREF - -

Boot mode selection

S1 is a 2-way dip switch for the boot mode selection (PIN: BOOT_MODE_SEL). The following table reports the available configurations for the two Axel Lite models. For further details, please refer to Axel Lite boot options.

Boot from SD/NAND

Switch Position Function Notes
S1.1 N.C. - -
S1.2 OFF BOOT_MODE_SEL = 0
Boot from SD
-
S1.2 ON BOOT_MODE_SEL = 1
Boot from NAND
-

Boot from SD/SPI NOR

Switch Position Function Notes
S1.1 N.C. - -
S1.2 OFF BOOT_MODE_SEL = 0
Boot from SD
-
S1.2 ON BOOT_MODE_SEL = 1
Boot from SPI NOR
-

XELK 2.0.0

Schematics

First release

Second release

BOM

First release

Second release

Layout

First release

Second release

XELK 2.2.0

Schematics

BOM

Layout

CAD Drawings