FreeCalypso > hg > freecalypso-reveng
annotate pirelli/mcsi @ 279:a7707c174510
pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 16 Feb 2019 18:30:11 +0000 |
parents | fdfb57a1c5fe |
children |
rev | line source |
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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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1 Tracing all 4 MCSI signals starting from the Calypso |
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 MCSI_TxD: Calypso ball L10, L1 trace goes to (3829,474). The trace on L2 gets |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
4 lost in the edge grind-down damage. |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
5 |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
6 MCSI_RxD: Calypso ball M10, no visible trace on L1 - perhaps there is a |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
7 micro-via under the ball? The ball pad coords are (3841,499). Looking at L2, |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
8 the micro-via hypothesis seems to be correct: a trace from those coords goes in |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
9 the same bunch as the MCSI_TxD. But then it gets lost in the damage too. |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
10 |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
11 MCSI_CLK: Calypso ball N10, L1 trace goes to (3898,369). L2: joins the same |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
12 bunch with MCSI_TxD and MCSI_RxD, then gets lost in the damage. |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
13 |
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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14 MCSI_FSYNCH: Calypso ball K9, L1 trace goes to (3865,524). L2: same story as |
fdfb57a1c5fe
Pirelli PCB tracing: voice band i/f, MCSI and MODEM UART
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
15 the others. |