LimeSDR-Mini JTAG cable adapter: Difference between revisions
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= LimeSDR-Mini JTAG adapter = | = LimeSDR-Mini JTAG cable adapter = | ||
If you want to program LimeSDR-Mini Intel MAX 10 FPGA (10M16SAU169C8G 169-UBGA), you have to connected Altera USB Blaster programmer (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: | |||
* | * JTAG connector on the board edge (Pitch 0.1", 7 pin) (unpopulated) | ||
* | * JTAG connector (Pitch 0.05", 10 pin) (unpopulated) | ||
== JTAG Connector on the Board Edge (Pitch 0.1", 7 pin) == | |||
To connect Board Edge connector to Altera USB Blaster programmer you have to make a simple JTAG cable adapter. | |||
Adapter cable schematic is provided below. LED and a resistor are an optional components for power indication just for more convenience. Omit it if not necessary. | |||
[[File:LimeSDR-Mini_FPGA_JTAG_adapter.png|thumb|center|640px|Figure 1. LimeSDR-Mini JTAG adapter schematic]] | |||
Here is a BOM: | |||
2. | 1. [http://www.digikey.com/product-detail/en/on-shore-technology-inc/302-S101/ED1543-ND/2178422 Header connector (pitch 0.1" (2.54mm))] | ||
2. [http://www.digikey.com/product-detail/en/wurth-electronics-inc/61300811121/732-5321-ND/4846839 Pinheader (7 pin, pitch 0.1" (2.54mm)] | |||
3. [http://www.digikey.com/product-detail/en/3m/3801-06/3M156095-1-ND/8256409 Flat Ribbon Cable (pitch 0.5" (1,27mm))] | |||
5. 1k | 4. [http://www.digikey.com/product-detail/en/wurth-electronics-inc/151031VS06000/732-5008-ND/4489988 LED (3mm green)] (optional) | ||
5. [http://www.digikey.com/product-detail/en/stackpole-electronics-inc/CF18JT1K00/CF18JT1K00CT-ND/2022742 Resistor (1k)] (optional) | |||
Check the pictures below of hand made adapter cable sample. | |||
[[File:LimeSDR-Mini_JTAG_apapter_photo_1.jpg|thumb|center|640px|Figure 2. Assembled LimeSDR-Mini JTAG adapter and board]] | [[File:LimeSDR-Mini_JTAG_apapter_photo_1.jpg|thumb|center|640px|Figure 2. Assembled LimeSDR-Mini JTAG adapter and board]] | ||
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[[File:LimeSDR-Mini_JTAG_apapter_photo_3.jpg|thumb|center|640px|Figure 4. LimeSDR-Mini JTAG adapter | [[File:LimeSDR-Mini_JTAG_apapter_photo_3.jpg|thumb|center|640px|Figure 4. LimeSDR-Mini JTAG adapter in action]] | ||
== 10 pin | == JTAG connector (Pitch 0.05", 10 pin) == | ||
This connector has standard FPGA JTAG | This connector has a standard FPGA JTAG pinout, but smaller pitch (0.05"). So, the cable adapter is just a pitch converter with the same pinout. | ||
[[File:LimeSDR_JTAG_adapter_10pin_0.1_0.05.jpg|thumb|center|640px|Figure | [[File:LimeSDR_JTAG_adapter_10pin_0.1_0.05.jpg|thumb|center|640px|Figure 5. Assembled LimeSDR 0.1" to 0.05" JTAG adapter]] | ||
BOM: | |||
Here is a BOM: | |||
1. [http://www.digikey.com/product-detail/en/on-shore-technology-inc/302-S101/ED1543-ND/2178422 Header connector (pitch 0.100" (2.54mm))]; | 1. [http://www.digikey.com/product-detail/en/on-shore-technology-inc/302-S101/ED1543-ND/2178422 Header connector (pitch 0.100" (2.54mm))]; | ||
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3. [http://www.digikey.com/product-detail/en/3m/3749-10-100/3M156019-5-ND/5308215 Flat Ribbon 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))]. | ||
{{Community}} |
Latest revision as of 12:49, 10 April 2018
LimeSDR-Mini JTAG cable adapter
If you want to program LimeSDR-Mini Intel MAX 10 FPGA (10M16SAU169C8G 169-UBGA), you have to connected Altera USB Blaster programmer (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:
- JTAG connector on the board edge (Pitch 0.1", 7 pin) (unpopulated)
- JTAG connector (Pitch 0.05", 10 pin) (unpopulated)
JTAG Connector on the Board Edge (Pitch 0.1", 7 pin)
To connect Board Edge connector to Altera USB Blaster programmer you have to make a simple JTAG cable adapter. Adapter cable schematic is provided below. LED and a resistor are an optional components for power indication just for more convenience. Omit it if not necessary.
Here is a BOM:
1. Header connector (pitch 0.1" (2.54mm))
2. Pinheader (7 pin, pitch 0.1" (2.54mm)
3. Flat Ribbon Cable (pitch 0.5" (1,27mm))
4. LED (3mm green) (optional)
5. Resistor (1k) (optional)
Check the pictures below of hand made adapter cable sample.
JTAG connector (Pitch 0.05", 10 pin)
This connector has a standard FPGA JTAG pinout, but smaller pitch (0.05"). So, the cable adapter is just a pitch converter with the same pinout.
Here is a BOM:
1. Header connector (pitch 0.100" (2.54mm));
2. Female Socket (0.05" (1.27mm));
3. Flat Ribbon Cable (pitch: 0.025" (0.64mm)).
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