Difference between revisions of "AxelEVB-Lite-Adapter (AxelLite)"

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(Mechanical Drawings)
(Revision A)
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===Revision A===
 
===Revision A===
Revision A does not integrate the S1 switch. To select the boot source, please use the dip switches provided by the [[TBD|AxelEVB-Lite rev. A]] board instead.
+
Revision A does not integrate the S1 switch. To select the boot source, please use the dip switches provided by the [[TBD|AxelEVB-Lite rev. A]] board instead. TBD
 
 
  
 
==Technical documentation==
 
==Technical documentation==

Revision as of 12:12, 29 November 2019

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

Introduction[edit | edit source]

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 There are two versions of the adapter. Revision 0 is used in combination with the AxelEVB-Lite revision 0. Revision A is used in combination with the AxelEVB-Lite revision A. 200px-Emblem-important.svg.png

Revision 0[edit | edit source]

The following images show the top and bottom views of the AxelEVB-Lite-Adapter revision 0:

Top view
Bottom view

Revision A[edit | edit source]

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

Top view
Bottom view

Connectors' pinout[edit | edit source]

J6 - SODIMM connector[edit | edit source]

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

J1, J2, J3 - AxelEVB-Lite mating connectors[edit | edit source]

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

J4 - JTAG[edit | edit source]

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[edit | edit source]

Revision 0[edit | edit source]

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[edit | edit source]

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

Boot from SD/SPI NOR[edit | edit source]

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

Revision A[edit | edit source]

Revision A does not integrate the S1 switch. To select the boot source, please use the dip switches provided by the AxelEVB-Lite rev. A board instead. TBD

Technical documentation[edit | edit source]

Revision 0[edit | edit source]

Schematics[edit | edit source]

BOM[edit | edit source]

Layout[edit | edit source]

Mechanical Drawings[edit | edit source]

Revision A[edit | edit source]

Schematics[edit | edit source]

BOM[edit | edit source]

Layout[edit | edit source]

Mechanical Drawings[edit | edit source]