Add Jtag Port
From NAS-Central Buffalo - The Linkstation Wiki
| Line 13: | Line 13: | ||
=== Buy one === | === Buy one === | ||
'''Commercial''' | '''Commercial''' | ||
| - | The [http://www.macraigor.com/wiggler.htm | + | The [http://www.macraigor.com/wiggler.htm Macraigor Wiggler] seems to be the cheapest at $150. |
'''Hobby''' | '''Hobby''' | ||
| - | Could the 20-pin [http://www.olimex.com/dev/arm-jtag.html | + | Could the 20-pin [http://www.olimex.com/dev/arm-jtag.html Olimex ARM-JTAG] be modified to work with Kuro-Box? $20. |
===Locate the pads=== | ===Locate the pads=== | ||
| Line 26: | Line 26: | ||
If you know which set of pin-outs that LinkStation/Kuro-Box uses, please update this page with the details. | If you know which set of pin-outs that LinkStation/Kuro-Box uses, please update this page with the details. | ||
| - | According to [ | + | According to [http://www.genbako.com/jtag/ Baulab] the following pins are identified |
{| | {| | ||
|- bgcolor=#CCCCCC | |- bgcolor=#CCCCCC | ||
| Line 80: | Line 80: | ||
| - | The same page also contains the schematics | + | The same page also contains the [http://www.genbako.com/jtag/kuro-jtagcable.png schematics], some pictures of the jtag cable and software needed. This cable can be used without adding the additional components. |
[[Category:Hardware]] | [[Category:Hardware]] | ||
[[Category:HowTo]] | [[Category:HowTo]] | ||
Revision as of 12:48, 22 May 2006
This document is a work in progress. It explains how to fit the internal on-chip debug (OCD) port on a Linkstation, Kuro-Box or Kuro-Box/HG to a PC interface.
Cable required: 
Contents |
OCD connector
The internal OCD port uses an electrical standard known as JTAG/COP. The signals have to be buffered to protect the hardware from damage and we use a JTAG wiggler to do this.
Those with some electrical experience could build their own circuit, but most will opt for ordering one.
Schematics and Software to build your own
http://hri.sourceforge.net/tools/
Buy one
Commercial The Macraigor Wiggler seems to be the cheapest at $150.
Hobby Could the 20-pin Olimex ARM-JTAG be modified to work with Kuro-Box? $20.
Locate the pads
The pads are labelled CN5: 
Connector Pin-outs
In order to use this port, you should add the 10K series VIO resistor R67 and a 4-way 1K resistor pack at RA11. It may be possible to use some functionality without these components.
If you know which set of pin-outs that LinkStation/Kuro-Box uses, please update this page with the details.
According to Baulab the following pins are identified
| TDO | 1 | 2 | ? | |
| TDI | 3 | 4 | ? | |
| ? | 5 | 6 | ? | |
| TCK | 7 | 8 | ? | |
| TMS | 9 | 10 | ? | |
| TMS | 11 | 12 | ? | |
| Vcc | 13 | 14 | ? | |
| ? | 15 | 16 | Gnd |
The same page also contains the schematics, some pictures of the jtag cable and software needed. This cable can be used without adding the additional components.
