FreeCalypso > hg > freecalypso-reveng
annotate pirelli/usb @ 10:b0f7481efc8b
Pirelli PCB rev eng: finally have something worthy to report:
traced out the 3 chip selects for the RAM/flash MCP.
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Sat, 20 Apr 2013 00:56:45 +0000 |
parents | 7a84f9e42a84 |
children |
rev | line source |
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9
7a84f9e42a84
Pirelli PCB: failed attempt at tracing out the 4 under-SIM test points
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1 All PCB trace connections to the USB connector are made on the outer layer |
7a84f9e42a84
Pirelli PCB: failed attempt at tracing out the 4 under-SIM test points
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
2 on the battery/SIM side of the PCB; none on the display/keypad side or on any |
7a84f9e42a84
Pirelli PCB: failed attempt at tracing out the 4 under-SIM test points
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
3 of the inner layers. |
7a84f9e42a84
Pirelli PCB: failed attempt at tracing out the 4 under-SIM test points
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
4 |
7a84f9e42a84
Pirelli PCB: failed attempt at tracing out the 4 under-SIM test points
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
5 The L1 copper image from steve-m shows that the ID pin appears to be totally |
7a84f9e42a84
Pirelli PCB: failed attempt at tracing out the 4 under-SIM test points
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
6 unconnected. The GND, VBUS and data pair connections appear the way one would |
7a84f9e42a84
Pirelli PCB: failed attempt at tracing out the 4 under-SIM test points
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
7 expect. |