FreeCalypso > hg > freecalypso-reveng
annotate pirelli/serial @ 115:2f23301d2f86
tiobjd: literal reloc recognition restricted to RTYPE_LONG
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Thu, 03 Apr 2014 06:50:07 +0000 |
parents | fdfb57a1c5fe |
children |
rev | line source |
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56
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Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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1 Tracing the apparently-unused MODEM UART signals |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
2 |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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3 TxD from Calypso: ball B9, L1 trace goes to (3905,1100). Found it on L2, goes |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
4 to an inner via at (3914,1070). Found the inner via on L7, goes to (3182,1071). |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
5 On L8 the signal goes directly to the debug connector identified by steve-m. |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
6 |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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7 RxD to Calypso: ball A9, seems to have a micro-via under the ball, pad coords |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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8 (3888,1054). Found it on L2, goes to an inner via at (3911,1030) and also to |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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9 what looks like a via back to L1 at (3858,1228). The stub back to L1 appears |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
10 to be a pull-up resistor. Found the inner via on L7, goes to (3154,928). |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
11 On L8 the signal goes directly to the debug connector identified by steve-m. |