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TruePosition GPS Receiver firmware

MS
Mark Sims
Sun, May 7, 2017 7:03 AM

One of my TruePosition GPSDOs fried a chip in the power supply when the wall wart that was powering it failed and started putting out 23V. It apparently ran for a while at that voltage before violently letting the magic smoke out.

If somebody can read a Spansion S29JL032H90TFI12? chip (some of the last digits are hard to read), I can pull it off the board and send it to you.  Searching the dump should reveal strings that show more of what the command set is.  I believe the chip is a 48 pin TSOP.  I don't have the proper adapter for my Data I/O machines.

One of my TruePosition GPSDOs fried a chip in the power supply when the wall wart that was powering it failed and started putting out 23V. It apparently ran for a while at that voltage before violently letting the magic smoke out. If somebody can read a Spansion S29JL032H90TFI12? chip (some of the last digits are hard to read), I can pull it off the board and send it to you. Searching the dump should reveal strings that show more of what the command set is. I believe the chip is a 48 pin TSOP. I don't have the proper adapter for my Data I/O machines.
TM
Tom Miller
Mon, May 8, 2017 6:53 PM

----- Original Message -----
From: "Mark Sims" holrum@hotmail.com
To: time-nuts@febo.com
Sent: Sunday, May 07, 2017 3:03 AM
Subject: [time-nuts] TruePosition GPS Receiver firmware

One of my TruePosition GPSDOs fried a chip in the power supply when the
wall wart that was powering it failed and started putting out 23V. It
apparently ran for a while at that voltage before violently letting the
magic smoke out.

If somebody can read a Spansion S29JL032H90TFI12? chip (some of the last
digits are hard to read), I can pull it off the board and send it to you.
Searching the dump should reveal strings that show more of what the
command set is.  I believe the chip is a 48 pin TSOP.  I don't have the
proper adapter for my Data I/O machines.


The two digits before the ? are very important. They describe the memory
format. You may want to put it under your microscope.

----- Original Message ----- From: "Mark Sims" <holrum@hotmail.com> To: <time-nuts@febo.com> Sent: Sunday, May 07, 2017 3:03 AM Subject: [time-nuts] TruePosition GPS Receiver firmware > One of my TruePosition GPSDOs fried a chip in the power supply when the > wall wart that was powering it failed and started putting out 23V. It > apparently ran for a while at that voltage before violently letting the > magic smoke out. > > If somebody can read a Spansion S29JL032H90TFI12? chip (some of the last > digits are hard to read), I can pull it off the board and send it to you. > Searching the dump should reveal strings that show more of what the > command set is. I believe the chip is a 48 pin TSOP. I don't have the > proper adapter for my Data I/O machines. > _______________________________________________ The two digits before the ? are very important. They describe the memory format. You may want to put it under your microscope.