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Difference between revisions of "LimeSDR-Mini JTAG cable adapter"

(7 pin JTAG connector on the board edge)
(10 pin JTAG connector)
Line 44: Line 44:
2. [http://www.digikey.com/product-detail/en/amphenol-fci/20021444-00010T4LF/609-4955-ND/4244966 Female Socket (0.05" (1.27mm))];
2. [http://www.digikey.com/product-detail/en/amphenol-fci/20021444-00010T4LF/609-4955-ND/4244966 Female Socket (0.05" (1.27mm))];
3. [http://www.digikey.com/product-detail/en/3m/3749-10-100/3M156019-5-ND/5308215 Cable (pitch: 0.025" (0.64mm))].
3. [http://www.digikey.com/product-detail/en/3m/3749-10-100/3M156019-5-ND/5308215 Flat Ribbon Cable (pitch: 0.025" (0.64mm))].

Revision as of 08:22, 10 April 2018

1 LimeSDR-Mini JTAG adapter

To directly program LimeSDR-Mini FPGA Intel MAX 10 (10M16SAU169C8G 169-UBGA), it is needed to connected JTAG adapter (Altera Blaster or equivalent). Standard FPGA JTAG connector has 10 pins in 2x5 configuration with 0.1" (2.54mm) pitch. Standard JTAG connector is too large for such a small PCB as LimeSDR-Mini. For this reason, LimeSSDR-Mini has 2 non-standard JTAG programming connectors:

  • 7 pin (0.1") male header on the board edge (unpopulated)
  • 10 pin (0.05") female header (unpopulated)

1.1 7 pin JTAG connector on the board edge

To use this JTAG connector with standard JTAG adapter you need to make simple JTAG adapter. Below are shown LimeSDR-Mini JTAG edge adapter schematic. LED is optional component and is required only for power indication.

Figure 1. LimeSDR-Mini JTAG adapter schematic


1. Header connector (pitch 0.1" (2.54mm));

2. pinheader;

3. Flat Ribbon Cable (pitch 0.5" (1,27mm);

4. LED

5. 1k resistor

Figure 2. Assembled LimeSDR-Mini JTAG adapter and board

Figure 3. LimeSDR-Mini JTAG adapter connected to the board

Figure 4. LimeSDR-Mini JTAG adapter connected to the board

1.2 10 pin JTAG connector

This connector has standard FPGA JTAG pinout pinout, but smaller pitch (0.05").


1. Header connector (pitch 0.100" (2.54mm));

2. Female Socket (0.05" (1.27mm));

3. Flat Ribbon Cable (pitch: 0.025" (0.64mm)).