Nokia 2650 Service Manual 08 RH53_54 sysmo

Nokia Customer Care

RH-53/54

8-System Module

RH-53/54

Nokia Customer Care 8-System Module

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RH-53/54 8-System Module Nokia Customer Care

Table of Contents

Page No

Abbreviations ......................................................................................................6

Introduction ......................................................................................................... 9

Technical Summary........................................................................................... 9

List of Features................................................................................................ 10

Technical Specifications ..................................................................................12

Modes of Operation ......................................................................................... 12

No supply .......................................................................................................12

Power off ........................................................................................................12

Acting dead ....................................................................................................13

Active .............................................................................................................13

Sleep mode ....................................................................................................13

Charging ........................................................................................................13

Regulators........................................................................................................ 14

DC Characteristics........................................................................................... 15

Supply Voltage Ranges .................................................................................15

Regulators Voltage Ranges ...........................................................................16

Interconnection Diagram.................................................................................. 17

External Signals and Connections................................................................... 17

Battery connector ...........................................................................................17

Baseband - RF interface ................................................................................18

Internal Signals and Connections.................................................................... 18

Audio ..............................................................................................................18

Speaker (Ringer & Earpiece) ......................................................................... 19

Hinge flex connection .....................................................................................19

Baseband board clocks.................................................................................... 21

Functional Description .....................................................................................22

Audio External ................................................................................................22

Headset Detection .........................................................................................22

PnPHF Detection ...........................................................................................23

Audio Internal................................................................................................... 23

Earpiece/Ringer .............................................................................................23

Microphone ....................................................................................................24

Vibra................................................................................................................. 25

Introduction ....................................................................................................25

Acoustic design ..............................................................................................25

Batteries........................................................................................................... 25

Keyboard.......................................................................................................... 26

Display & Keyboard Backlight.......................................................................... 27

LCD Backlight ................................................................................................27

Keyboard light effects ....................................................................................27

LCD.................................................................................................................. 28

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Memory Module............................................................................................... 28

Fold detection-switch....................................................................................... 28

SIM Interface.................................................................................................... 28

SIM -reader ....................................................................................................29

SIM switch and card detection ....................................................................... 29

Assembly ...........................................................................................................31

Flex.................................................................................................................. 31

Security.............................................................................................................. 32

Test Interfaces................................................................................................... 33

Connections to Baseband................................................................................ 33

FBUS Interface ................................................................................................ 34

Test points ....................................................................................................... 34

RF Functional Descriptions ............................................................................. 36

RF block diagram............................................................................................. 36

Frequency synthesizers................................................................................... 36

VCXO .............................................................................................................36

VCO ...............................................................................................................36

PLL Synthesizer, Functional Description .......................................................37

Receiver........................................................................................................... 37

AGC ...............................................................................................................38

Transmitter....................................................................................................... 38

Dual band FEM ..............................................................................................38

Power control scheme ................................................................................... 38

List of Figures Page No

Fig 1 RH-53/54 bb block diagram ......................................................................... 9

Fig 2 IPower distribution diagram.......................................................................... 17

Fig 3 Flex con. pin out........................................................................................... 20

Fig 4 External audio interface ............................................................................... 22

Fig 5 Earpiece/ringer interface..............................................................................24

Fig 6 Microphone interface.................................................................................... 25

Fig 7 BL-4C battery............................................................................................... 26

Fig 8 Keyboard PWB layout.................................................................................. 26

Fig 9 UEM, UPP and SIM interface....................................................................... 28

Fig 10 Upper block B-cover SIM-slide slot............................................................ 29

Fig 11 SIM draw and switch.................................................................................. 30

Fig 12 Test pattern............................................................................................... 33

Fig 13 RF block diagram....................................................................................... 36

Fig 14 Simplified BB, either I or Q channel ...........................................................37

Fig 15 Power loop.................................................................................................38

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Nokia Customer Care 8-System Module

Abbreviations

Abbr. Description ADC Analog Digital Connector ASIC Application Specific Integrated Circuit ATR Answer To Reset BB Baseband BL-4C Battery type. BSI Battery Size Indicator Cbus Control bus (internal phone interface between UPP-UEM) CTSI Clock Timing Sleep and Interrupt Dbus DSP controlled bus (Internal phone interface between UPP-UEM) DC Direct Current DCT4.0 Digital Core Technology, generation 4.0 DSP Digital Signal Processor EMC Electro Magnetic Compatibility ESD Electro Static Discharge Fbus Fast Bus, asynchronous message bus connected to DSP (communications

bus) FPC Flexible printed circuit GENIO General Purpose Input/Output GPRS General Packed Radio Services HW Hardware IF Interface 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, Salo - Finland LN Lotus Notes

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RH-53/54 8-System Module Nokia Customer Care

MALT Medium And Loud Transducer Mbus Asynchronous message bus connected to MCU (phone control interface).

Slow message bus for control data. MCU Micro Controller Unit NO_SUPPLY UEM state where UEM has no supply what so ever NTC Negative temperature Coefficient, temperature sensitive resistor used as a

temperature sensor. PA Power Amplifier (RF) PDM Pulse Density Modulation Penny HDA11, Phone program (1100)m Copenhagen-Denmark Phoenix SW tool of DCT4.x Pippi Hdb12, Phone program (3510), Copenhagen-Denmark PLL Phase locked loop PnPHF Plug and Play Handsfree PUP General Purpose IO (PIO), USARTS and Pulse Width Modulators PWB Printed Wired Board PWR_OFF UEM state where phone is off PWRONX Signal from power on key. R&D Research and development RESET UEM state where regulators are enabled RTC UEM internal Real Time Clock SIM Subscriber Identification Module SLEEP UEM power saving state controlled by UPP SPR Standard Product Requirements SRAM Static RAM SW Software TB To Be Defined TI Texas Instruments, American company UEM Universal Energy Management UI User Interface UPP Universal Phone Processor VBAT Main battery voltage

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Nokia Customer Care 8-System Module

VCHAR Charger input voltage VCHARDET Charger detection threshold level VMSTR+,

VMSTR

Master Reset threshold level

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Introduction

This document specifies the baseband module for the RH-53/54 platform program. The baseband module includes the baseband engine chipset, the UI components and the acoustical parts for the transceiver.

RH-53/54 is a hand-portable dualband GSM/GPRS 900/1800MHz fold-phone, having the DCT4 generation baseband (UEM/UPP) and RF (MJOELNER) circuitry. The RH-53 platform also supports a GSM 850/1900 US variant called RH-54. RH-53 platform is based on common baseband engine 4.0.

■ Technical Summary

The baseband module contains 2 main ASICs named the UEM and UPP. The module furthermore contains a Combo Flash IC of 64Mbit flash and 16Mbit RAM.

Figure 1:RH-53/54 bb block diagram

Interface

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Nokia Customer Care 8-System Module

The UEM supplies both the baseband module as well as the RF module with a series of voltage regulators. Both the RF and baseband modules are supplied with regula ted voltages of 2.78 V and 1.8V. UEM includes 6 linear LDO (low drop-out) regulators for baseband and 7 regulators 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 fr equency by factors from 0.25 to 31.

The UEM contains a real-time clock, sliced from the 32768 Hz crystal oscillators. The 32768 Hz clock is fed to the UPP as a sleep clock.

The communication between the UEM and the UPP is done via the bi-directional serial busses CBUS and DBUS. The CBUS is controlled by the MCU and operates at a speed of 1 MHz set by SW. The DBUS is controlled by the DSP and operates at a speed of 13 MHz. Both processors are located in the UPP.

The UEM ASIC handles the interface between the baseband and the RF section. UEM provides A/D and D/A conversion of the in-phase, quadrature receive/transmit signal paths and also A/D and D/A conversions of received and transmitted audio signals to and from the user interface. The UEM supplies the analog signals to RF section according to the UPP DSP digital control. RF ASIC MJOELNER is controlled through UPP RFBUS serial interface. There are also separate signals for PDM coded audio. Digital speech processing is handled by the DSP inside UPP ASIC.

UEM is a dual voltage circuit, the digital p art s ar e running from the baseband supply 1 .8V and the analog parts are running from the analog supply 2.78V also VBAT is directly used by some blocks.

The baseband supports both internal and external microphone inputs and speaker outputs. RH-53/54 has two external serial control interfaces: FBUS and MBUS. These busses can be

accessed through production test pattern as described in section 8. RH-53/54 transceiver modules are implemented on 8 layers and the surface are with selective

Ni/Au OSP.

■ List of Features

RH-53 platform common features:

• Jack UI style 20 keys (with 4 ways scroll) ESD-proof layout, multiple keypress.

• Battery BL-4C

•UEMK

• UPP8Mv2.6/2.10 Lead Free

• Combo Flash 8MByte flash memory and 2MByte PSRAM (64Mbit+16Mbit)

• Power key integrated in keypad (common with End key)

• Internal vibra

• Colour display (colures 4096, resolution: 130 columns x 130 rows, technology: CSTN)

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• Polyphonic ringing tones

• 2 white LED’s for LCD Backlight.

• 2 white LEDs for key mat & 3 blue LED’s for Light-effect in key mat.

•JAVA

•MMS

•GPRS

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Technical Specifications

■ Modes of Operation

RH-53/54 baseband engine has six different ‘normal’ operating modes:

• Νo supply

• Power off

• Αcting dead

•Active

•Sleep

• Charging

No supply

In this mode the phone has no supply voltage.

The phone enters this mode if the battery is disconnected, or the battery voltage drops below V

MSTR-

(1.8V~2.0V)

The phone exits ‘No supply’ mode, into hardware ‘Reset’ mode (not described here), after a 20ms delay, if the battery voltage rises above V placing the battery with a new battery (V the battery above V

MSTR+

BAT>VMSTR+

(2.0~2.2V). This will occur either by re-

MSTR+

), or by connecting a charger and charging

The phone exits ‘Reset’ mode into ‘Active’/Acting dead’ mode when the battery voltage rises above V V

COFF-

COFF+

(2.7~2.9V) for a minimum of 240.5ms. If the battery voltage has not risen beyond

before the internal watchdog elapses the phone is forced into ‘Power of f’ mode instead.

(3.0~3.2V) within the watchdog time period, and subsequently stays above

Power off

In this mode the phone is powered off, but has a supply voltage. The phone enters ‘Power off’ mode from all other modes, except ‘No su pply’, if internal watch-

dog elapses. VRTC regulator is active (enabled), and supplied from the main batte ry (the RTC status depends on whether RTC was enabled or not when entering ‘Power off’ mode).

The phone exits ‘Power off’ mode, into hardware ‘Reset’ mode (not described here), after a 20ms delay, if either of the following conditions are met:

• Power on button detected (PwrOffX).

• Charger connection detected (VCharDet)(VCharIn>VCH

(1.9~2.1V)).

DET+

• RTC alarm detected (RTC_ALARM).

The phone exits ‘Reset’ mode into ‘Active’/Acting dead’ mode when the battery voltage rises above V

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, and stays above V

COFF+

for a minimum of 240.5ms.

COFF-

+ 26 hidden pages

Nokia 2650 Service Manual 08 RH53_54 sysmo

Specifications and Main Features

Frequently Asked Questions

User Manual

Abbreviations

Introduction

■ Technical Summary

■ List of Features

Technical Specifications

■ Modes of Operation

No supply

Power off