OpenWrt Forum Archive

Topic: Jtag pinout for RB433

The content of this topic has been archived on 3 Apr 2018. There are no obvious gaps in this topic, but there may still be some posts missing at the end.

Post #1
Ihaterb
4 Feb 2009, 10:08

hi all:
    Does anyone know the Jtag pinout for RB433.
    The  board shows them called cpu jtag,but I stil can not find out.

Post #2
Ihaterb
5 Feb 2009, 04:25

I finally find them.
Cpu jtag includes 7 pins.
   7       6     5       4    3    2      1
TRST  TDI  TDO  TMS  X  TCK  GND
I use wiggler to connect it.
On the board ,the TRST is pulldown by resister,you should pullup by 3.3V. Pin3 is X .It may be the sys_reset.Ignore it.

Post #3
etness
15 Aug 2013, 11:03

Thank you Ihaterb this pinout works also with RB435G, I can detect CPU with BusBlaster

(Last edited by etness on 15 Aug 2013, 11:15)

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