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