STB based on STi5202
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STB based on STi5202
Hi all,
I've tried to connect USBJTAGNT to a header that looks like jtag.. STB is STi5202 based. I've tried to connect to the board using B600V4 template and pinout wiring... But no success.. all the time it reports BOX OFF. The STB is Sagem ITAD83SD (IPTV + DVB-T). Any help would be appriciated.
Thanks,
Boris
I've tried to connect USBJTAGNT to a header that looks like jtag.. STB is STi5202 based. I've tried to connect to the board using B600V4 template and pinout wiring... But no success.. all the time it reports BOX OFF. The STB is Sagem ITAD83SD (IPTV + DVB-T). Any help would be appriciated.
Thanks,
Boris
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- Junior Member
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usbbdm wrote:You need
1. Post your connections.
2. Post your output window.
Here is How I connected on the header that I suppose to be 20-pin JTAG header..
And from the USB JTAG NT side I've used this pinout:
This is the capture from the software. Screen cap is taken after USB JTAG NT device was disconnected from mu laptop (that's why you'll see "USB Not Connected"). When connected I got only BOX OFF message..
I want to mention that cable is OK because I've successfully connected it to other STB that is STi5107 based.. (although In this STB I receive TRAP OFF, but it seems that it is because improper configuration in XML..)
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look at TDI trace on PCB..it goes in different direction that other tap signals.
maybe there is another device in the chain?
check and see if tap signals have pull-down resistors according to ST40 spec?
there is even a current limiting series resistor on TDO..
if you are willing to desolder cpu, just do it and see if tap signals are connected directly to the cpu. what do you have to lose trying?
if its not a jtag header and there is no other jtag header, you cannot hook up usbjtagnt anyway.
maybe there is another device in the chain?
check and see if tap signals have pull-down resistors according to ST40 spec?
there is even a current limiting series resistor on TDO..
if you are willing to desolder cpu, just do it and see if tap signals are connected directly to the cpu. what do you have to lose trying?
if its not a jtag header and there is no other jtag header, you cannot hook up usbjtagnt anyway.
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