annotate pirelli/usb @ 279:a7707c174510

pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 16 Feb 2019 18:30:11 +0000
parents 7a84f9e42a84
children
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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.