诺基亚3120电路图

诺基亚3120电路图:SchemaTIcs (Table of Contents) .................... 1 Top sheet ..................................................... 2 DCT4 Common Baseband SchemaTIc (Top Level) ................................................................................................. 3 RH-19/RH-50 System Connector............................................ 4 RH-19/RH-50 User Interface......................................... 5 RH-19/RH-50 Audio 6 MulTIGND symbol bypass ............................................................................. 7 5 pin ProducTIon Test Pattern ........................................................... 7 Discrete Power Management .............................................................. 8 Light filtering ........................................................................... 9 DC/DC Converter ............................................................... 10 PWR resistor 0805 thermal1 ............................................................. 10 SIM reader for RH-19/RH-50............................................................. 10 RH-19/RH-50 Filters / No IR Interface present in this product........................................................................ 11 Module ID .................................................. 11 UPP 8M Implementation ................................................................ 12 Discrete decoupling capacitors for UPP ........................................................... 13 Testpoints based Ostrich Interface ............................................... 13 GSM RF - Baseband Interface .................................................................. 14 Combo Memory 64 + 4 Mbit ............................................................. 15 Discrete capacitors for memory without VFlash1 ............................................................................................... 16 Empty wing sheet .......................................................... 16 Test and Emulator Interface ................................................................... 17 Testpoints for JTAG Emulator ......................................................... 18 RF Top sheet .............................................................................. 19 Power Amplifier ................................................... 20 Mjoelner ......................................................................................................... 21 Component layout diagram, top............................................................. 22 Component layout diagram, bottom................................................................. 23