SIM card related Projects » SIMtrace

schematic: add DNP note on JTAG and UART debug connectors

Change-Id: Id1c03418af021ce8febd666946bed3d8c01ceb77

schematic: mark P1 and P2 as dot no place

P1 (JTAG) and P2 (FTDI UART) are onlz needed to be placed on
boards meant for development.
this can by done by hand separately.

Change-Id: I039ecff7d910f3de549bf2cec264a860c8ea1d34

schematic: mark USB reset circuit as dot no place

the additional circuit to reset USB (by pulling D+ low) is not
required anymore since the USB controller in the SAM3S integrates
this capability.
the SAM3S-EK Development Board also demonstrates only the inline...

schematic: mark R19 as dot no place

R19 pulls VCC_PHONE low for better power on detection.
but the voltage divider R20 + R21 also pull this line low using
a stronger pull down resistor ok 20 kOhm.
thus R19 is unnecessary-

this change has been tested with a real simtrace device....

schematic: rename NP to DNP for clarity

Change-Id: I06c38e353f2b804faa0dcbf4a9405d5d5042af3e

schematic: mark JP1 and JP2 as dot no place

the protruding through hole pins of the header for the jumper
might get shorted when the board lies on a conductive surface,
leading to unwanted flash erase (JP2) or false TST signal (JP1)

Change-Id: I7fc6176d8c63ab8274b641e7bcd990093af3c4ca

schematic: mark R22 as dot no place

R22 is use to pull the FLAGB output of the FPF2109 high since this
is an open-drain output.
but we actually don't read FLAGB do get the error conditions, thus
thus pull-up resistor is not required.

this change has been tested with a real simtrace device....

schematic: mark R24 as no place

R24 is pulling the voltage regulator output for VCC_SIM down.
it has probably been added at the same time as R15.
since we don't read VCC_SIM it is not important to have it in a
defined state.
also the card, phone, or simtrace will provide power to the card...

schematic: mark R15 as no place

R15 is pulling VCC_SIM down.
it has probably been added because a load resistor is present in
the FPF2109 datasheet example application, or to not have VCC_SIM
in tri-state.
since we don't read VCC_SIM it is not important to have it in a...

schematic: make it more readable

- VCC is up
- GND is down
- group the parts by functionality and use net name
- separate decoupling capacitors
- arrange groups from left input to right output

Change-Id: I2d894dd10b8b619ccbce1ae8b7e25316963157c8