Nokia Customer Care 7-System Module ISSUE 1 09/2004 Copyright ©2004 Nokia Corporation.
RH-59/60 Nokia Customer Care 7-System Module [This page left intentionally blank] 2 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
RH-59/60 7-System Module Nokia Customer Care Table of Contents Page No RH-59/60, Nokia 2600 .......................................................................................... 9 Baseband HW iIntroduction .............................................................................. 9 Technical summary............................................................................................ 9 Modes of operation ......................................................................................
RH-59/60 Nokia Customer Care 7-System Module List of Figures Page No Fig 1 Baseband block diagram.............................................................................. 9 Fig 2 Power distribution diagram........................................................................... 14 Fig 3 Headset Interface......................................................................................... 19 Fig 4 Earpiece interface ...............................................................................
RH-59/60 7-System Module Nokia Customer Care [This page left intentionally blank] ISSUE 1 09/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
RH-59/60 Nokia Customer Care 7-System Module Abbreviations 6 Abbr. Description ACI Accessory Control Interface ADC Analog Digital Connector ARM Advanced RISC Machines ASIC Application Specific Integrated Circuit ATR Answer To Reset BB Baseband BL-5C Battery type.
RH-59/60 7-System Module Nokia Customer Care IF Interface IHF Integrated Hands Free IMEI International Mobile Equipment Identity LCD Liquid Crystal Display LDO Low Drop Out LED Light Emitting Diode Li-Ion Lithium Ion battery Lion Battery program LN Lotus Notes LPRF Low Power Radio Frequency MALT Medium And Loud Transducer Mbus Asynchronous message bus connected to MCU (phone control interface). Slow message bus for control data.
RH-59/60 Nokia Customer Care 8 7-System Module SARAM Single Access RAM SIM Subscriber Identification Module SLEEP UEM power saving state controlled by UPP SPR Standard Product Requirements SRAM Static RAM STI Serial Trace Interface SW Software TBSF Through the Board Side Firing TDB To Be Defined TI Texas Instruments UEM Universal Energy Management UI User Interface UPP Universal Phone Processor VBAT Main battery voltage VCHAR Charger input voltage VCHARDET Charger detection
RH-59/60 7-System Module Nokia Customer Care RH-59/60, Nokia 2600 ■ Baseband HW iIntroduction This document specifies the baseband module for the Nokia 2600. The baseband module includes the baseband engine chipset, the UI components and the acoustical parts for the transceiver. Nokia 2600 is a hand-portable dualband 900/1800MHz or Low band/High band phone, featuring the DCT4 generation baseband (UEM/UPP) and RF (MJOELNER) circuitry.
RH-59/60 Nokia Customer Care 7-System Module for RF. The UEM is furthermore supplying the baseband SIM interface with a programmable voltage of either 1.8 V or 3.0 V. The core of the UPP is supplied with a programmable voltage of 1.0 V, 1.3 V, 1.5 V or 1.8 V. UPP operates from a 26MHz clock, coming from the RF ASIC MJOELNER, the 26 MHz clock is internally divided by two, to the nominal system clock of 13MHz. DSP and MCU contain phase locked loop (PLL) clock multipliers, which can multiply the system.
RH-59/60 7-System Module Nokia Customer Care Power_off In this state the phone is powered off, but supplied. VRTC regulator is active (enabled) having supply voltage from main battery. Note, the RTC status in PWR_OFF mode depends on whether RTC was enabled or not when entering PWR_OFF.
RH-59/60 Nokia Customer Care 7-System Module The charging control circuitry (CHACON) inside the UEM controls the charging current delivered from the charger to the battery. The battery voltage rise is limited by turning the UEM switch off when the battery voltage has reached VBATLim (programmable charging cut-off limits 3.6V / 5.0V / 5.25V). Charging current is monitored by measuring the voltage drop across a 220 mOhm resistor. 12 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
RH-59/60 7-System Module Nokia Customer Care ■ DC characteristics Supply voltage ranges Table 1: Absolute Maximum Ratings Signal Rating Battery Voltage 0... 4.39V (VBAT) Charger Input Voltage -0.3... 9.2VRMS (16,9 Vpeak) Following voltages are the normal and extreme voltages for the battery: Table 2: Battery voltage range Signal Min. Nom Max VBAT 3.21V 3.80V 4.39V Vcoff+ 3.0V 3.1 3.2 Vcoff- 2.7V 2.8V 2.9V Vmstr+ 2.0V 2.1V 2.2V Vmstr- 1.8V 1.9V 2.0V Sw shutdown - 3.
RH-59/60 Nokia Customer Care 7-System Module ■ Interconnection diagram Figure 2:Power distribution diagram Baseband UEM VR1A VR1B VR2-7 RF Regulators 6 SIM VSIM VCORE UPP VANA Baseband Regulators VLED+ FLASH SRAM VIO RTC LED Driver VFLASH1 VR4 VBAT Battery LCD CHACON VBAT FM Radio Accessory Regulator Vout PA Supply System Connector ■ External signals and connections System connector (X102) Table 3: DC connector Pin 2 Signal VCHAR Min. - Nom 11.
RH-59/60 7-System Module Nokia Customer Care Table 4: External microphone Signal No m Min. - Max Conditi on 100mVp G=20dB 1,22kΩ to MIC1B (AC condition) G=20dB 1kΩ to GND Unloaded MIC2P (Differential input P) - MIC2N (Differential input N) - MICB2 (Microphone Bias) 2.0 V 2.1 V 2.25 V DC External loading of MICB2 - - 600uA DC p - 100mVp Note p Table 5: External speaker, differential output XEARP (HF) & XEARN (HFCM) Signal No m Min.
RH-59/60 Nokia Customer Care 7-System Module Battery connector Battery temperature is estimated by measurement in Transceiver PWB with a separate NTC resistor. Thus the Battery Interface has only 3 contacts. Table 7: Battery connector Name Description VBAT Battery voltage terminal. GND Battery ground terminal. BSI Battery size identification. 16 Test usage Battery calibration. Flash and local mode forcing. COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
RH-59/60 7-System Module Nokia Customer Care Baseband – RF interface The interface between the baseband and the RF can be divided into three categories: - The digital interface from the UPP to the RF ASIC (Mjoelner). The serial digital interface is used to control the operation of the different blocks in the RF ASICs. - The analogue interface between UEM and the RF. The analogue interface consists of RX and TX converter signals.
RH-59/60 Nokia Customer Care 7-System Module Baseband board clocks Table 10: Board Clocks Signal name From To Min. Typ. Max. Unit Notes RFCLK MJOELNER UPP - 26 - MHz Active when SLEEPX is high SLEEPCLK UEM UPP - 32.
RH-59/60 7-System Module Nokia Customer Care Functional Description ■ Audio external Nokia 2600 is designed to support fully differential external audio accessory connection. A headset and PnPHF can be directly connected to system connector. Figure 3:Headset Interface 2.7V Not all components are shown Hookint /MBUS EAD Headint Bottom Connector Mic_bias MICB2 MIC2P MIC2N HF 3...25k HFCM 1k0 2.1V MicGnd 1.8V 33N 33N 0.3V 0.8V 0.
RH-59/60 Nokia Customer Care 7-System Module The earpiece circuit includes only a few components: two 10 ohm in order to have a stable output an EMC filter Figure 4:Earpiece interface Placed near UEM Placed in top of PWB, near earpiece UEM 10 ohm EARP EARP 10 ohm EARN EARN Microphone An omni directional microphone is used. The microphone is placed in the system connector sealed in its rubber gasket. The sound port is provided in the system connector.
RH-59/60 7-System Module Nokia Customer Care Figure 6:Internal electrical microphone interface Placed near UEM UEM 220 MICB1 Placed near bottom connector 1k 4.7uF MIC+ 2k2 MIC1P 22k 2k2 1n 2*33n 2k2 MIC1N 2k2 1k MIC- 1n 1n MICBCAP 1u ■ Batteries Type:BL-5C battery Technology:Li-Ion. 4.23V charging. 3.1V cut-off Capacity:BL-5C; 850 mA Figure 7: BL-5C Battery The BSI values: Table 11: BSI of BL-5C Mode BSI (kOhm) Min. Normal Service Type Description Max 75 (BL-5C) 3.
RH-59/60 Nokia Customer Care 7-System Module Keyboard The keyboard PWB layout consists of a grounded outer ring and an inner pad. Power key is integrated in keypad. For the schematic diagram of the keyboard kindly refer to the A3 schematic diagrams.
RH-59/60 7-System Module Nokia Customer Care ■ Memory module The baseband memory module consists of external burst flash memory 4Mbyte (32Mbit). The UPP contains internal SRAM with 2 Mbit (optional: 2M). The UPP will not be covered here. ■ SIM interface The whole SIM interface is located in the two ASICs, UPP and UEM. The SIM interface in the UEM contains power up/down, port gating, card detect, data receiving, ATR-counter, registers and level shifting buffers logic.
RH-59/60 Nokia Customer Care 7-System Module ■ Test interfaces The test pattern is placed on engine PWB, for service purposes, same test pattern is used for after sales purposes as well. Through MBUS or FBUS connections, the phone HW can be tested by PC software (Phoenix). The test points are listed in the A3 size schematic diagrams ■ Connections to baseband The flash programming box, FPS8, is connected to the baseband using a galvanic connector or test pads for galvanic connection.
RH-59/60 7-System Module Nokia Customer Care General Description of the RF circuits In the following general descriptions different colours are used in the block diagram. The Low band signal route is shown in red, theHigh band route in green and the common signal lines are shown in blue. ■ Receiver signal path The signal from the antenna pad is routed to the RX/TX switch (Z700).
RH-59/60 Nokia Customer Care 7-System Module ■ Transmitter signal path The I/Q signal from the BB is routed to the modulators for bothLow band and 1900 MHz. The output of the modulators is either terminated in a SAW filter (Z603) for Low band or a balun forHigh band. Both signals are amplified in buffers. The amplitude limited signal is then amplified in the PA (N700) where the gain control takes place.
RH-59/60 7-System Module Nokia Customer Care The VCO (G600) is the component that actually generates the LO-frequency. Based on the control voltage input the VCO generates a single-ended RF output. The signal is then differentiated through a balun. This signal is fed to the Prescaler and N-divider in Mjoelner. The divider output is supplied to the phase detector which compares the frequency and phase to the 400kHz reference clock.
RH-59/60 Nokia Customer Care 7-System Module ■ Power supply All power supplies for the RF Unit are generated in the UEM IC (D200). All power outputs from this IC has a decoupling capacitor at which the supply voltage can be checked. The power supply configuration is described in the block diagram below: Figure 12: Power supply configuration The names in bold are signal names used on the RF schematic pages.
