zJTAG

EJTAG Debrick Utility based on BrJTAG

Supported Cables

   Supported Cable Types
   ---------------
   ID  Cable Name
   0    TIAO USB Multi-Protocol Adapter (TUMPA)
   1    TIAO All In One/20/10 PIN JTAG cable (XILINX)
   2    TIAO Blackcat JTAG cable (for cable modems)
   3    TIAO USB Multi-Protocol Adapter Lite (TUMPA-Lite)
   4    Parallel port type (DLC5/WIGGLER)
   5    FT2232C/D based USB cable(OpenMoko,JTAGkey,OpenJTAG)
   6    SEGGAR J-Link EMU
   7    HID-BRJTAG v1.xx(USBASP)
   8    HID-BRJTAG v2.xx(STM32F10x/SAM7S)

 

TIAO Universal JTAG Adapter V2

The TIAO Universal adapter is my favorite among parallel jtag adapters, and the reason is simple, all the pins are exposed. What this means is that it can be used as buffered, non-buffered and the parallel pins can be used directly, for applications like spipgm, it can be wired for blackcat, and several others.

This adapter can be purchased here

To read more about how to configure and wire the adapter go here

 

TIAO USB Multi-Protocol Adapter (JTAG, SPI, I2C, Serial)

No parallel port? USB version of the board available! This TIAO USB Multi-Protocol adapter is powered by FTDI's flagship communication chip FT2232H.

It supports the following protocols: JTAG, SPI, I2C and serial. With a 16-Bit Dual-Supply Bus Transceiver, this board can support voltage from 1.8v to 5.0v. It also uses a 3v to 5.5v multichannel RS232 Line driver/receiver for serial communication.

This adapter can be purchased here. For tutorials and manuals go here.

 

Use coupon code I LOVE DIYGADGET to save 10% off your order!

 

Making an Unbuffered JTAG cable

A jtag cable can be made very inexpensively.
Here is additional information: Building the Cable (DD-WRT Wiki)
See also: Unbuffered Cable (OpenWrt Wiki)