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Tech Head - The Technology Section
The Work Bench and Soldering Station
Schematic For Echostar AD3000ip Power Supply
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<blockquote data-quote="Llew" data-source="post: 703777" data-attributes="member: 175007"><p>Here's some info that might be helpful if you want to try accessing the eeprom through the CPU. I don't yet know of a way of programming the eeprom directly in situ.</p><p></p><p>THe IBM PowerPC in the AD3000ip uses a PPC401D2 core. See the pdf included. Page 5.8 shows the JTAG header details. You will need to solder a 16-pin header adjacent to the PowerPC chip as I have done in the pic. The JTAG connections on the header are (from right to left top, right to left bottom) -</p><p></p><p>Top row</p><p>--------</p><p></p><p>Pin 1 TDO</p><p>Pin 3 TDI</p><p>Pin 7 TCK</p><p>Pin 9 TMS</p><p>Pin 11 Proc Halt</p><p></p><p>Bottom row</p><p>-----------</p><p></p><p>Pin 4 TRST</p><p>Pin 6 Power (not needed, receiver supplies it)</p><p>Pin 16 Ground </p><p></p><p>I can access the CPU's registers with my programmer, but that's all. I have had no luck targetting the eeprom (erasing etc.) at least so far.</p><p></p><p>Pinouts of the Atmel uploaded too.</p></blockquote><p></p>
[QUOTE="Llew, post: 703777, member: 175007"] Here's some info that might be helpful if you want to try accessing the eeprom through the CPU. I don't yet know of a way of programming the eeprom directly in situ. THe IBM PowerPC in the AD3000ip uses a PPC401D2 core. See the pdf included. Page 5.8 shows the JTAG header details. You will need to solder a 16-pin header adjacent to the PowerPC chip as I have done in the pic. The JTAG connections on the header are (from right to left top, right to left bottom) - Top row -------- Pin 1 TDO Pin 3 TDI Pin 7 TCK Pin 9 TMS Pin 11 Proc Halt Bottom row ----------- Pin 4 TRST Pin 6 Power (not needed, receiver supplies it) Pin 16 Ground I can access the CPU's registers with my programmer, but that's all. I have had no luck targetting the eeprom (erasing etc.) at least so far. Pinouts of the Atmel uploaded too. [/QUOTE]
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Tech Head - The Technology Section
The Work Bench and Soldering Station
Schematic For Echostar AD3000ip Power Supply
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