AxelEVB-Lite-Adapter (AxelLite)

Info Box Applies to Axel Lite

Contents

IntroductionEdit

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:

Top view

Bottom view

Connectors' pinoutEdit

J6 - SODIMM connectorEdit

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

J1, J2, J3 - AxelEVB-Lite mating connectorsEdit

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

J4 - JTAGEdit

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 - MicroSDEdit

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 selectionEdit

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/NANDEdit

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

Boot from SD/SPI NOREdit

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

SchematicsEdit

• Orcad: coming soon
• PDF: coming soon

BOMEdit

• coming soon

LayoutEdit

• coming soon

CAD DrawingsEdit

• DXF (2D): coming soon
• IDF (3D): coming soon