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Digital control board debugging notes (view source)
Revision as of 18:32, 29 October 2009
, 18:32, 29 October 2009no edit summary
This page contains a list of all currently known problems with the digital control board.
This page contains a list of all currently known problems with the digital control board.
= Problems =
== No Power on +1.2V Power Island ==
== No Power on +1.2V Power Island ==
=== Other Details and Current Status ===
=== Other Details and Current Status ===
This problem may be related to the overload on the -5V circuitry for of the DAC.
This problem may be related to the overload on the -5V circuitry for of the DAC.
== Mismatched JTAG programming header ==
== Mismatched JTAG programming header ==
=== Solution ===
=== Solution ===
For the testing stage, the flying lead connector is sufficient to bypass this problem. The layout must be corrected to the matching header (type?). Change entered already?
For the testing stage, the flying lead connector is sufficient to bypass this problem. The layout must be corrected to the matching header (type?). Change entered already?
== Incorrect footprint for the Ethernet Jack used ==
[please fill in the part information]
= Suggested/Preferred Changes =
<code>R12</code>, the pull-up resistor for the reset pins (header 2) is unnecessary, as the FPGA pin can be programmed to pull up.