4 layers60 × 28 mm RailLink, the printed circuit board in 3D

RailLink

Compact isolated version of J-Link v9.

Size: 60 × 28 mm
Copper layers: 4
Thickness: 1.18 mm
Parts: 83
Nets: 118
Pads: 415
Tracks, vias: 1,131, 195
Pours: 25
Routed: Yes
KiCad: KiCad 5 (file 20171130)
Created: 26 Apr 2020
Updated: 6 Sep 2021

Overview

RailLink is an open-source printed circuit board by Misaka0x2730, from the Misaka0x2730/RailLink repository on GitHub. It is a 4-layer board of 60 × 28 mm with 83 parts on 118 nets, routed with 1,131 tracks and 195 vias.

It is built around the CRE1S0505SC, 74LVC2T45DC and ADUM4160BRW, with the USBLC6-2SC6, MBR0530 and IRLML2502 among its other parts. Its parts include 37 capacitors, 12 ICs, 10 resistors, 4 connectors and 3 diodes. It belongs with the interfaces and adapters and sensors and measurement boards and the STM32 boards of this library.

Main components

README

README.md

RailLink

Very compact isolated version of J-Link v9 with fully supported functions.
Isolation based on ADuM4160 (USB2.0 FS isolation) and B0505S-1W (Isolated 5V/0.2A DC-DC).

Overview

Dimensions(L x W x H, millimeters): 70 x 28 x 15 (probe only); 110 x 35 x 25 (probe with connected adapter).
3d view 3d_adapter

Probe pinout

RailLink has 10 pin 0.1"(2.54mm) connector compatible with standard ARM 10 pin connector.

RailLink connector

Pin	Name	Pin	Name
1	Vtref	2	TMS/SWDIO
3	GND	4	TCK/SWCLK
5	GND	6	TDO/SWO
7	UART RX	8	TDI/UART TX
9	GND	10	~RESET

Adapter pinouts

Adapter has several popular connectors: ARM 10 pin 0.05"(1.27mm), TC2030-IDC-NL 6 pin 0.1"(2.54mm), ARM 20 pin JTAG 0.1"(2.54mm), ARM 20-pin Cortex 0.05"(1.27mm).
In addition, there are two custom connectors: 4 pin UART and CWF-6 (Ilya).

ARM 10 pin 0.05"(1.27mm)
adapter_arm_10_005

Pin	Name	Pin	Name
1	Vtref	2	TMS/SWDIO
3	GND	4	TCK/SWCLK
5	GND	6	TDO/SWO
7	UART RX	8	TDI/UART TX
9	GND	10	~RESET

TC2030-IDC-NL
adapter_tc2030

Pin	Name	Pin	Name
1	Vtref	2	TMS/SWDIO
3	~RESET	4	TCK/SWCLK
5	GND	6	TDO/SWO

ARM 20 pin JTAG 0.1"(2.54mm)
adapter_arm_20_01

Pin	Name	Pin	Name
1	Vtref	2	NC
3	NC	4	GND
5	TDI/UART TX	6	GND
7	TMS/SWDIO	8	GND
9	TCK/SWCLK	10	GND
11	NC	12	GND
13	TDO/SWO	14	GND
15	~RESET	16	GND
17	UART RX	18	GND
19	NC	20	GND

ARM 20-pin Cortex 0.05"(1.27mm)
adapter_arm_20_005

Pin	Name	Pin	Name
1	Vtref	2	TMS/SWDIO
3	GND	4	TCK/SWCLK
5	GND	6	TDO/SWO
7	UART RX	8	TDI/UART TX
9	GND	10	~RESET
11	GND	12	NC
13	GND	14	NC
15	GND	16	NC
17	GND	18	NC
19	GND	20	NC

4 pin UART
adapter_uart

Pin	Name
1	Vtref
2	TDI/UART TX
3	UART RX
4	GND

CWF-6 (Ilya)
adapter_ilya

Pin	Name
1	Vtref
2	TCK/SWCLK
3	TMS/SWDIO
4	~RESET
3	UART RX
4	GND

Assembly

Most of SMD components are 0402.
Assembly should be not very difficult even with soldering iron.
But paste soldering with stencil is recommended.
Assembly drawing placed here.
Assembly drawing should be opened in browser.

Programming

Install J-Link software pack.
Load the bootloader
- ST-LINK way
  1. Install ST-LINK utility
  2. Connect RailLink SWD connector to ST-LINK
  3. Connect ST-LINK to PC
  4. Connect RailLink to PC
  5. Launch ST-LINK utility
  6. Load this file into MCU.
- J-Link way
  1. Connect RailLink SWD connector to J-Link
  2. Connect J-Link to PC
  3. Connect RailLink to PC
  4. Start JFlashLite
  5. Select device - STM32F205RC, select interface - SWD, and speed - 100kHz
  6. In Data file field choose this file
  7. Click "Program Device" button
  8. Wait until the firmware is loaded;
Disconnect RailLink and JLink from PC.
Connect RailLink to PC.
Launch JLink.exe (JLinkExe on Linux) and agree to firmware restoring.
Wait until firmware is restored.
Now RailLink is almost ready for use. Type and run "Exec SetSN=xxxxxxxx", where xxxxxxxx is serial number;
RailLink is ready for use!

PS. Important!
It's recommended to add following options:

Exec AddFeature GDB
Exec AddFeature RDI
Exec AddFeature FlashBP
Exec AddFeature FlashDL
Exec AddFeature JFlash
Exec AddFeature RDDI
But in latest version (V6.80 at this moment) any of these commands causes "ERROR: Unknown command".
You can install older version (two or more version of JLink software pack can be install on one PC) and try to execute these commands. For example, it's working on V6.30.

License

This project is licensed under a CERN Open Hardware Licence Version 2 - Permissive.

Category and platform

Interfaces and adapters Sensors and measurement STM32

Topics

stm32 stm32f205 jlink debugger probe isolated debug

Project files

Show this board on your page

https://pcbkit.io/boards/Misaka0x2730/RailLink

The board's own page, for a message or a post.

Source

Repository: Misaka0x2730/RailLink
Board file: hardware-jlink/source/RailLink.kicad_pcb
Commit: c119ce4
Licence: Not stated

Parts

Qty	Value	Footprint	References
25	100n	Capacitor_SMD:C_0402_1005Metric	C3, C12, C16, C19, C20, C21, C22, C23, C24, C25, C26, C27, C28, C29, C30, C31 +9
6	74LVC2T45DC	Package_SO:VSSOP-8_2.3x2mm_P0.5mm	U6, U7, U8, U9, U10, U11
4	22	Resistor_SMD:R_0402_1005Metric	R2, R5, R6, R7
4	470	Resistor_SMD:R_Array_Concave_4x0603	RN1, RN5, RN6, RN7
3	10k	Resistor_SMD:R_Array_Concave_4x0603	RN2, RN3, RN4
3	10n	Capacitor_SMD:C_0402_1005Metric	C11, C14, C18
3	5.1k	Resistor_SMD:R_0402_1005Metric	R3, R4, R9
2	18p	Capacitor_SMD:C_0402_1005Metric	C9, C10
2	2.2u	Capacitor_SMD:C_0603_1608Metric	C13, C17
2	220k	Resistor_SMD:R_Array_Concave_4x0603	RN9, RN10
2	4.7u	Capacitor_SMD:C_0603_1608Metric	C2, C15
2	MBR0530	Diode_SMD:D_SOD-123	D2, D3
1	100	Resistor_SMD:R_Array_Concave_4x0603	RN8
1	10u	Capacitor_SMD:C_0603_1608Metric	C7
1	12MHz	Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	1M	Resistor_SMD:R_1206_3216Metric	R1
1	1u	Capacitor_SMD:C_0603_1608Metric	C8
1	2.2	Resistor_SMD:R_0402_1005Metric	R10
1	4.7n/2kV	Capacitor_SMD:C_1812_4532Metric	C1
1	51	Resistor_SMD:R_0402_1005Metric	R8
1	ADUM4160	Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm	U3
1	CRE1S0505SC	Converter_DCDC:Converter_DCDC_muRata_CRE1xxxxxxSC_THT	U2
1	IRLML2502	Package_TO_SOT_SMD:SOT-23	Q1
1	IRLML6402	Package_TO_SOT_SMD:SOT-23	Q2
1	LK112M33TR	Package_TO_SOT_SMD:SOT-23-5	U4
1	MCP6002-xMS	Package_SO:VSSOP-8_3.0x3.0mm_P0.65mm	U12
1	STATUS	LED_THT:LED_D3.0mm-3	D1
1	STM32F205RCTx	Package_QFP:LQFP-64_10x10mm_P0.5mm	U5
1	SWD	Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical	J2
1	TARGET	Connector_IDC:IDC-Header_2x05_P2.54mm_Horizontal	J4
1	USBLC6-2SC6	Package_TO_SOT_SMD:SOT-23-6	U1
1	USB_C_Receptacle_USB2.0	Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12	J1
1	VEE_3V3	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	J3

The 79 most common of 83 parts.

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Questions

How big is the RailLink PCB?

It measures 60 × 28 mm and has 4 copper layers, 1.18 mm thick.

What parts does the RailLink use?

83 parts, built around the CRE1S0505SC, 74LVC2T45DC, ADUM4160BRW and USBLC6-2SC6. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the RailLink KiCad files?

From the Misaka0x2730/RailLink repository on GitHub, at the commit this page was made from: the board is hardware-jlink/source/RailLink.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the RailLink design in my own project?

Its repository states no licence, so its author keeps all rights: ask Misaka0x2730 before reusing the design.

RailLink

Overview

Main components

CRE1S0505SC

74LVC2T45DC

ADUM4160BRW

USBLC6-2SC6

MBR0530

IRLML2502

IRLML6402

README

RailLink

Overview

Probe pinout

Adapter pinouts

Assembly

Programming

License

Parts

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RailLink Adapter

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Questions

How big is the RailLink PCB?

What parts does the RailLink use?

Where can I download the RailLink KiCad files?

Can I use the RailLink design in my own project?