AxelEVB-Lite-Adapter (AxelLite)
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Contents
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
The following images show the top and bottom views of the AxelEVB-Lite-Adapter:
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 | - | - |
J5 - MicroSD[edit | edit source]
The signals of the SD1 interface are routed to the J5 microSD memory card connector. The following table reports the connector's pinout:
| Pin# | Pin name | Function | Notes |
|---|---|---|---|
| 1 | SD1_DAT2 | DATA[2] | - |
| 2 | SD1_DAT3 | Card Detect/DATA[3] | - |
| 3 | SD1_CMD | CMD line | - |
| 4 | ADP_3.3V | Power Supply | - |
| 5 | SD1_CLK | Clock | - |
| 6, 9, 10, 11, 12 | DGND | - | - |
| 7 | SD1_DAT0 | DATA[0] | - |
| 8 | SD1_DAT1 | DATA[1] | - |
| 13 | ADP_3.3V | - | Pull up to 3.3V with 10K Ohm - |
Boot mode selection[edit | edit source]
S1 is a 2-way dip switch for the boot mode selection. 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 from SD | - |
| S1.2 | OFF | Boot from NAND | - |
Boot from SPI/USB[edit | edit source]
| Switch | Position | Function | Notes |
|---|---|---|---|
| S1.1 | N.C. | - | - |
| S1.2 | ON | Boot from USB | - |
| S1.2 | OFF | Boot from SPI | - |
Schematics[edit | edit source]
- Orcad: coming soon
- PDF: coming soon
BOM[edit | edit source]
- coming soon
Layout[edit | edit source]
- coming soon
CAD Drawings[edit | edit source]
- DXF (2D): coming soon
- IDF (3D): coming soon
