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Author Topic: Simple LPT - JTAG adapter  (Read 1573 times)
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slack
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« on: July 27, 2012, 10:31:57 22:31 »

This LPT-JTAG adapter works very well, I tried it with H-JTAG and Crossworks for ARM.
Transfer speed is about 12 kb/s.
I created this schematics according to many LPT-JTAG adapters i found on net, it has all JTAG signals: TMS, TCK, TDI, TDO, nTRST, nSRST
In attached file: pcb and schematics in EAGLE PCB format, configuration for H-JTAG, and 3d view done with Eagle3D.

There was an error in PCB i posted before, this one is correct (pin 19 on 74AC244 must be connected to GND)

74HC244 can be used instead of 74AC244.
« Last Edit: July 28, 2012, 10:06:41 10:06 by slack » Logged
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