Merge pull request #7 from egzumer/master

New PCB scans including internal layers

README.md

@@ -104,9 +104,9 @@ The GPS module [UBX-6010](__used_asset__/gps_datasheet.pdf?raw=true) `U302` is c
 
 The radio interface is a one-chip solution with the [Si4032](https://www.silabs.com/documents/public/data-sheets/Si4030-31-32.pdf) `U401`, which is connected to the MCU via SPI. Worth mentioning are the secondary, unused antenna pad and a track at TX, which purpose is currently unidentified.
 
-The clock for the IC is provided from the oscillitator odf the GPS module, which is however only 26 MHz, it should be 30 MHz. This is not yet added to the schematic.
+The clock for the IC is provided from the oscillitator odf the GPS module, which is however only 26 MHz, it should be 30 MHz. This has to be taken into account when setting up radio frequencies.
 
-Two of the three GPIO pins are used. GPIO1 switches the N-channel MOSFETS to heat the reference. GPIO2 has not yet been identified.
+GPIO1 switches the N-channel MOSFETS to heat the reference.
 
 
 # Interface

README_DE.md

@@ -107,7 +107,7 @@ Das GPS-Modul [UBX-6010](__used_asset__/gps_datasheet.pdf?raw=true) `U302` ist
 
 Das Radio-Interface ist eine One-Chip-Solution mti dem [Si4032](https://www.silabs.com/documents/public/data-sheets/Si4030-31-32.pdf) `U401`, der über SPI mit dem MCU verbunden ist. Erwähnenswert sind neben dem sekundären, unbenutzten Antennen-Pad zwei nicht zuortbare Leiterbahnen an TX und XOUT.
 
-Von den drei GPIO-Pins werden zwei verwendet. GPIO1 schaltet die N-Kanal-MOSFETS, um die Referenz zu beheizen. GPIO2 ist bisher nicht identifiziert.
+GPIO1 schaltet die N-Kanal-MOSFETS, um die Referenz zu beheizen.
 
 # Interface
 ![Interface](__used_asset__/interface_sch.png?raw=true "Interface")