Siemens K45 Service Manual

C45 / ME45 / S45

(K45)

Level 2.5e

Repair Documentation

V 1.0

V1.0 Page 1 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

Table of Contents:

1 LIST OF AVAILABLE LEVEL 2,5E PARTS C45 + K45...................................... 4

2 REQUIRED EQUIPMENT FOR LEVEL 2,5E K45 ............................................... 6

3 REQUIRED SOFTWARE FOR LEVEL 2,5E K45 ................................................ 6

4 RADIO PART ........................................................................................................ 7

4.1 Power Supply RF-Part ..................................................................................... 8

4.2 Frequency generation ................................................................................... 10

4.2.1 Synthesizer: The discrete VCXO (13MHz) .......................................................................... 10

4.2.2 Synthesizer: LO1 ................................................................................................................. 12

4.2.3 Synthesizer: LO2 ................................................................................................................. 14

4.2.4 Synthesizer: PLL .................................................................................................................. 16

4.3 Antenna switch (electrical/mechanical) ....................................................... 18

4.4 Receivers ........................................................................................................ 20

4.4.1 Receiver: GSM900/1800 –Filter to Demodulator ................................................................. 20

4.4.2 IC Overview ......................................................................................................................... 23

4.5 Transmitter ..................................................................................................... 25

4.5.1 Transmitter: Modulator and Up-conversion Loop ................................................................ 25

4.5.2 Transmitter: Power Amplifier ............................................................................................... 27

5 POWER SUPPLY ............................................................................................... 28

5.1 Overview and Voltages ................................................................................. 28

5.2 Power Supply ASIC ....................................................................................... 29

5.3 Battery and Charging .................................................................................... 32

5.3.1 Battery ................................................................................................................................. 32

5.3.2 Charging Concept ................................................................................................................ 32

6 LOGIC PART ...................................................................................................... 34

6.1 Overview Logic/control ................................................................................ 34

6.2 EGOLD (PMB6850) V1.3c/V2.x ...................................................................... 36

6.3 EGAIM inside the EGOLD+ ........................................................................... 37

6.3.1 Tasks of the EGAIM inside the EGOLD+ ............................................................................ 38

6.4 Real Time Clock (integrated in the EGOLD+) .............................................. 41

6.5 SRAM ................................ ................................ ................................ .............. 42

V1.0 Page 2 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

6.6 FLASH ............................................................................................................. 43

6.7 IRDA ................................................................................................................ 44

7 ACOUSTICS ....................................................................................................... 45

7.1 General ........................................................................................................... 45

7.2 Vibra ................................................................................................................ 46

7.3 Microphone and Loudspeaker (Ringer) ...................................................... 47

7.3.1 Loudspeaker ........................................................................................................................ 47

7.3.2 Microphone .......................................................................................................................... 47

7.3.3 Loudspeaker/Ringer ............................................................................................................ 48

8 ILLUMINATION: ................................................................................................. 49

8.1 Illumination .................................................................................................... 49

9 SIM-CARD AND CONNECTORS ....................................................................... 50

9.1 SIM-Card ......................................................................................................... 50

9.2 Display connector .......................................................................................... 51

9.3 MMI-Connector ............................................................................................... 52

9.4 Battery Connector ......................................................................................... 54

V1.0 Page 3 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

C45

D100

IC

Egold+

4EGO

L36810-G6132-D670

C45

Z100

Quarz

Quarz/Egold+/Logic

4OSC

L36145-F102-Y8

C45

V342

Transistor

Tran._Charge

4CHT

L36830-C1104-D670

C45

V306

Diode

Diode_AF

4DAF

L36840-D3084-D670

C45

V344

Diode

Diode_Charge

4DCH

L36840-D5061-D670

C45

D361

IC

ASIC

4SPA

L36145-J4682-Y29

C45

N386

IC

Volt.Regulator_ZUB

4REG

L36820-C6161-D670

C45

V442

Transistor

Tran._Vibra_Switch

4VIT

L36830-C1097-D671

C45

V880

Transistor

Tran._Diplexer_Switch

4TDI

L36820-C6047-D670

C45

V881

Transistor

Tran._Diplexer_Switch

4TDI

L36820-C6047-D670

C45

Z880

IC

Ant_Switch_Diplexer

4ANS

L36145-K280-Y181

C45

Z850

VCO

VCO_1.LO

4VC1

L36145-G100-Y69/Y93

C45

Z890

VCO

VCO_TX/RF

4VCT

L36145-G100-Y59/Y92

C45

V850

Transistor

Tran._VCO_Switch

4TLO

L36820-C6047-D670

C45

Z851

Filter

Filter_BALUN

4BAL

L36145-K260-Y31

C45

N840

IC

Volt.Regulator_RF

4REG

L36810-C6065-D670

C45

D800

IC

Transceiver IC

4DEM

L36820-L6081-D670

C45

Z900

PA

Power_Amplifier

4PAM

L36851-Z2002-A45

C45

V922

Transistor

Tran._PA_Control

4PAT

L36840-C4009-D670

C45

V950

Transistor

Tran._26MHz_Ampl.

4T26

L36840-C4049-D670

C45

R959

Resistor

Temp_Resistor

4TER

L36120-F4223-H

C45

Z950

Quarz

Oszillator_26MHz

4VCX

L36145-F260-Y16

C45

D920

IC

PA_Comperator

4COM

L36820-L6084-D670

C45

V951

Diode

Capa_Diode

4CAD

L36840-D61-D670

C45

V920

Diode

Feedback_Diode

4FED

L36840-D5049-D670

K45

D100

IC

Egold+

4EGO

L36810-G6132-D670

K45

Z100

Quarz

Quarz/Egold+/Logic

4OSC

L36145-F102-Y10

K45

V342

Transistor

Tran._Charge

4CHT

L36830-C1104-D670

K45

D361

IC

ASIC

4SPA

L36145-J4682-Y29

K45

V922

Transistor

Tran._PA_Control

4PAT

L36840-C4009-D670

K45

N920

IC

Op.Amp/PA_RF

4OPA

L36820-L6084-D670

1 List of available level 2,5e parts C45 + K45

Phone type ID-No Type Name(function)/Location Rep-Code Order No.

V1.0 Page 4 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

K45

V880

Transistor

Tran._Diplexer_Switch

4TDI

L36820-C6047-D670

K45

V881

Transistor

Tran._Diplexer_Switch

4TDI

L36820-C6047-D670

K45

N840

IC

Volt.Regulator_RF

4REG

L36810-C6065-D670

K45

Z900

PA

Power_Amplifier

4PAM

L36851-Z2002-A45

K45

D800

IC

RF_Demod./Mod.

4DEM

L36820-L6081-D670

K45

Z851

Filter

Filter_BALUN

4BAL

L36145-K260-Y31

K45

Z950

Quarz

Oszillator_26MHz

4VCX

L36145-F260-Y16

K45

Z850

VCO

VCO_1.LO

4VC1

L36145-G100-Y69

K45

Z890

VCO

VCO_TX/RF

4VCT

L36145-G100-Y59

K45

V850

Transistor

Tran._VCO_Switch

4TLO

L36820-C6047-D670

K45

V950

Transistor

Tran._13MHz_Ampl.

4T13

L36840-C4049-D670

K45

N386

IC

Volt.Regulator_ZUB.

4REG

L36820-C6161-D670

K45

V344

Diode

Diode_Charge

4DCH

L36840-D5061-D670

K45

V306

Diode

Diode_AF

4DAF

L36840-D3084-D670

K45

Z880

IC

Ant_Switch_Diplexer

4ANS

L36145-K280-Y181

K45

V951

Diode

Capa_Diode

4CAD

L36840-D61-D670

K45

R959

Resistor

Temp_Resistor

4TER

L36120-F4223-H

K45

V920

Diode

Feedback_Diode

4FED

L36840-D5049-D670

K45

Inf. Z871

Filter

IF_360/RF

4IFF

L36145-K280-Y182

K45

Inf. D800

IC

Smarti+

4SMA

L36820-L6092-D670

K45

Inf. Z852

Filter

RX_PCN/RF

4FI1

L36145-K280-Y183

K45

Inf. Z851

Filter

RX_GSM/RF

4FI1

L36145-K280-Y172

K45

Inf. Z861

VCO

VCO_TX/RF

4VCT

L36145-G100-Y62

K45

Inf. Z880

VCO

VCO_1.LO

4VC1

L36145-G100-Y64

K45

Inf. V902

Transistor

Tran._Switch

4SWT

L36820-C6047-D670

K45

Inf. N901

PA

Power_Amplifier_PCN

4PAP

L36851-Z2002-A48

K45

Inf. N902

PA

Power_Amplifier_GSM

4PAG

L36851-Z2002-A47

K45

Inf. N970

IC

Volt.Regulator_RF

4REG

L36810-C6065-D670

K45

Inf. Z900

Diplexer

4DIP

K45

Inf. D904

IC

Diplexer Switch

4SWI

L36810-B6101-D670

K45

Inf. D905

IC

Diplexer Switch

4SWI

L36810-B6101-D670

K45

Inf. Z1000

Quarz

Oszillator_13MHz

4VCX

L36145-F220-Y4

K45

Inf. D903

IC

Op.Amp/PA_RF

4OPA

L36820-L6084-D670

K45

Inf. V903

Diode

Feedback_Diode

4FED

L36840-D5049-D670

V1.0 Page 5 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

2 Required Equipment for Level 2,5e K45

GSM-Tester (CMU200 or 4400S incl. Options) PC-incl. Monitor, Keyboard and Mouse Bootadapter 2000/2002 (L36880-N9241-A200) Troubleshooting Frame S/ME45 (F30032-P112-A1) Troubleshooting Frame C45 (F30032-P135-A1) Power Supply Spectrum Analyser Active RF-Probe incl. Power Supply Oscilloscope incl. Probe RF-Connector (N<>SMA(f)) Power Supply Cables Dongle (F30032-P28-A1) BGA Soldering equipment

Reference: Equipment recommendation V1.0

3 Required Software for Level 2,5e K45

Windows NT Version4

Winsui version1.22 or higher Windows software for GSM-Tester ( Cats(Acterna) or CMU-GO(Rohde&Schwarz) ) Software for reference oscillator adjustment Internet unblocking solution

V1.0 Page 6 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

4 Radio Part

The radio part of the K45 platform consists of two different chip-sets. They are from the companies “Hitachi” and “Infineon” The following description will cover both chip-sets. The logic part for both chipsets is the same.

The radio part is designed for Dual Band operation, covering EGSM900 as well as GSM 1800 frequencies, and can be divided into 4 Blocks. Power supply for RF-Part Transmitter Receiver Synthesizer,

The RF-Part has it´s own power supply realised by a voltage regulator which is directly to the battery. The voltages for the logic part are generated by the Power-Supply ASIC

The transmitter part converts the I/Q base band signals supplied by the l logic (EGOLD+) into RF-signals with characteristics as defined in the GSM recommendation (www.etsi.org) After amplification by a power Amplifier the signal is radiated via the internal or external antenna.

The receiver part converts the received GMSK signal supplied by the antenna into IQ base band signals which can then be further processed by the logic (EGOLD+).

The synthesizer generates the required frequencies for the transmitter and Receiver. A 13MHz oscillator is acting as a reference frequency.

Restrictions: The mobile phone can never transmit and receive in both bands simultaneously. Only the monitor time slot can be selected independently of the frequency band. Transmitter and receiver can of course never operated simultaneously.

V1.0 Page 7 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

4.1 Power Supply RF-Part

A directly to Batt+ connected voltage regulator, with a nominal output voltage of 2.8V is used, to perform the required “RF-Voltages” named VCC2_8 and

VCC_SYN.

The voltage regulator is activated as well as deactivated via SLEEPQ and

VCXOEN provided by the EGOLD+

The temporary deactivation is used to extend the stand by time.

Blockdiagram

PIN-Out

PIN-OUT

V1.0 Page 8 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

Type

Part No.

Signal

Source

Output

Hitachi

N840

Pin 2 SleepQ

EGOLD+ L11

Pin 1 VCC2_8

Pin 6 VCXOEN

EGOLD+ P7

Pin 7 VCC_SYN

Infineon

N970

Pin 2 SleepQ

EGOLD+ L11

Pin 1 VCC2_8

Pin 6 VCXOEN

EGOLD+ P7

Pin 7 VCC_SYN

Hitachi

Circuit diagram

V1.0 Page 9 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

EGOLD+

V1.3

GND

47K

R615

AFC

Signalform

C110

C616

100N

AFC_PNM

GND

C600

10N

R600

V602

BAS170W

123

30K

22K

R106

4.2 Frequency generation

4.2.1 Synthesizer: The discrete VCXO (13MHz)

K45 mobiles are using two different reference frequencies. 13MHz for the Infineonand 26MHz for the Hitachi chip set. The generation of the 13/26MHz signal is done via a discrete “Colpitts” VCXO . This oscillator consists mainly of: Infineon Hitachi A 13MHz crystal Z1000 Z950 26MHz An oscillator switch V1000 V950 A capacity diode V1002 V951 TP 1005 TP 951 after dividing by two

Infineon The oscillator output signal is splited in two reference signals. One (VCXO) for the PLL inside the SMARTi IC, and the other (SIN13MHZ_BB ) for the EGOLD+ (functional M14). A de-coupling circuit C1000-C1004, L1000 is needed to block interference signals coming from the logic. To compensate frequency drifts (e.g. caused by temperature) the oscillator frequency is controlled by the (AFC_PNM) signal, generated through the internal EGOLD+ (D100 (functional R3)) PLL via the capacity diode V800. Reference is the base station frequency. To compensate a temperature caused frequency drift, the temperature-depending resistor R1012 is placed near the VCXO to measure the temperature. The measurement result TVCXO is reported to the EGOLD+(baseband l4) via R136

The required voltage VCC_SYN is provided by the N970

Hitachi The oscillator works similar like the “Infineon”, with one exception. The oscillator output signal (26MHz_RF) is not splited. It is directly connected to the BRIGHT IC, (pin 40) to be divided by 2. This so gained signal SIN13MHZ_BB is used from the EGOLD+ in the same way (generating the AFC_PNM) as the Infineon.

The required voltage VCC_OSC is provided by the N840 (VCC_SYN) through

R863 and R861

Waveform of the AFC_PNM signal from EGOLD+ to Oscillator

V1.0 Page 10 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

Hitachi

Circuit diagram

V1.0 Page 11 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

4.2.2 Synthesizer: LO1

The first local oscillator is needed to generate frequencies which enable the transceiver IC to mix an “IF” and to perform the channel selection in the TX part. To do so, a control voltage for the LO1 is used. Gained by a comparator (located inside the Transceiver -IC). This control voltage is a result of the comparison of the divided LO1 and a reference Signal. The division ratio of the dividers is programmed by the EGOLD+, according to the network channel requirements.

Infineon The first local oscillator (LO1) is part of the PLL , which consists of the comparator

inside the Smarti (D800), a loop filter and a VCO (Z880) module. This LO1 circuit generates frequencies from:

EGSM RX = 1285-1320MHz EGSM TX = 1304-1339MHz PCN RX = 1445-1520MHz PCN TX = 1286-1361MHz IF = 360MHz IF = 424 / 428MHz Ref. Freq. = 13MHz Ref. Freq. = 13MHz

Formula to calculate the frequencies: 1st LO freq. RX EGSM = Ch. + IF 1st LO freq. TX EGSM = Ch. + IF

PCN = Ch. – IF PCN = Ch. – IF The VCO module is switched on by the EGOLD+ signal PLLON (TDMA-Timer J12)

On demand of the network, the VCO-Module is switched with OSW (SMARTi+ (pin 21)) between GSM900 and GSM1800. The channel programming of the PLL happens via the EGOLD+ signals SYGCCL,

SYGCDT, SYNSTR (RF Control K14, K15, M15).

The required voltage VCC_SYN is provided by the N970

Hitachi The first local oscillator (LO1) is part of the PLL which consists of the comparator inside the Bright (D800), a loop filter and the VCO (Z850) module. This LO1 circuit generates frequencies from:

EGSM RX = 3520-3556MHz EGSM TX = 3608-3760MHz PCN RX = 3610-3760MHz PCN TX = 3708-3848MHz IF = no IF required IF-GSM = 47 or 48MHz IF-PCN = 94 or 95MHz Ref. Freq. = 26MHz Ref. Freq. = 26MHz

Formula to calculate the frequencies: 1st LO freq. RX EGSM = Ch. * 4 1st LO freq. TX EGSM = Ch. / 4

PCN = Ch. * 2 PCN = Ch. / 2 The VCO (Z850) is switched on by the EGOLD+ signal PLLON (TDMA-Timer J12)

via V850 and therefore supplied with VCC_SYN. The VCO guarantees by using the control voltage at pin5 a coverage of the GSM900 and GSM1800 band. The channel programming of the PLL happens via the EGOLD+ signals SYGCCL,

SYGCDT, SYNSTR (RF Control K14, K15, M15).

The required voltage VCC_SYN is provided by the N840

V1.0 Page 12 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

4221

4222

13MHz to EGOLD

1 : 2

from EGOLD+

26MHz

Bright

from EGOLD+

SMARTi

13MHz

Circuit diagram

V1.0 Page 13 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

4.2.3 Synthesizer: LO2

The second local oscillator (LO2) is required to generate IF-Frequencies for: Notes The receiver part (the demodulator) only Infineon The transmitter part ( the modulator) To ensure the frequency stability, a control voltage is gained with a PLL circuit consisting of the 2nd LO VCO, a comparator/divider and a loop-filter.

Infineon The second local oscillator (LO2) as a part of the PLL is located mainly inside the the SMARTi (D800). Only an external loop filter (C800,801, and R800) is required. This LO2 circuit generates the frequencies for:

The demodulator frequency, to get the baseband signals MOD_A and MOD_B as well as the inverted signals MOD_AX and MOD_BX

2nd LO freq. RX EGSM = 1440MHz divided by 4 = 360MHz PCN = 1440MHz divided by 4 = 360MHz

The modulator, to get the modulator IF-Frequency for the up-conversion loop 2nd LO freq. TX EGSM = 1696MHz divided by 4 = 424MHz

EGSM = 1712MHz divided by 4 = 428MHz PCN = 1696MHz divided by 4 = 424MHz PCN = 1712MHz divided by 4 = 428MHz

The LO2 PLL is using the same control-unit like the LO1, so the programming and the RX/TX-Switching is done in the same way, (via the SYGCCL, SGCDT, SYNSTR signals). The SMARTi and therefore the 2nd LO is switched on by the EGOLD+ signal

PLLON (TDMA-Timer J12)

The required voltage VCC_SYN is provided by the N970 Hitachi

The second local oscillator circuit (LO2) of the Hitachi chipset consists of: The VCO, and a comparator/divider inside the Bright IC, And an external part ( loop-filter (C830,832, and R831) and capacity diodes V830,831). Not requiring a RX frequency, the LO2 generates only the TX-Frequencies for the modulator:

nd

2

LO freq. TX EGSM = 376 or 384MHz divided by 4 = 47 or 48MHz

PCN = 376 or 380MHz divided by 2 = 94 or 95MHz To ensure frequency stability the gained control voltage is guided to the capacity

diodes. The Hitachi version is programmed in the same way with the same signals as described at the Infineon chipset.

The required voltage VCC_SYN is provided by the N840

V1.0 Page 14 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

VCO

LO2

External filter LO2

Infineon

Bright

Circuit diagram

V1.0 Page 15 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

4.2.4 Synthesizer: PLL

PLL as a part of the PMB6253 (SMARTi+) IC Blockdiagram

V1.0 Page 16 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

PLL as a part of the BRIGHT IC Blockdiagram

V1.0 Page 17 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

Internal

to / from diplexer

4.3 Antenna switch (electrical/mechanical)

Internal/External <> GSM900/1800 <> Receiver/Transmitter Notes

The K45 mobile has two antenna switches. a) The mechanical antenna switch for the differentiation

between the internal and external antenna

b) The electrical antenna switch, for the differentiation between the receiving and transmitting signals, just like the differentiation between GSM900 and GSM1800. To activate the correct settings of this diplexer, some logical switches and switching signals are required

Infineon Hitachi D904 V880

D905 V881

V1.0 Page 18 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

Bright

Infineon

EGSM

Vc

(EGSM)

DCSTxRx

on

off

on

off

Tx

Rx

on

offonoff

0V

2.5V

(10mA)

2.5V

(10mA)

Vc

(DCS)

0V--

-

-----

Vc

(EGSM)

*

FEM

ANT.

50ohm

Rx(DCS)

Balance 100ohm

Vc

(DCS)

Rx(EGSM)

***

*

Balance 100ohm

Note: Pin No.13 can remove DC cut C, but caution balance item to another port.

V1.0 Page 19 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

4.4 Receivers

4.4.1 Receiver: GSM900/1800 –Filter to Demodulator

From the antenna switch, up to the demodulator the received signal passes the following blocks to get the demodulated baseband signals for the EGOLD+:

Infineon Filter >>>> LNA >>>> IF-Mixer >>>> IF-Filter >>>> PGC >>>> Demodulator

Z852 PCN Smarti Smarti Z871 Smarti Smarti Z851 GSM

Filter: The GSM900 filter is an EGSM band centered SAW-Filter (Z851) with a center frequency of 945,5MHz. The symmetrical filter output is adapted to the balanced LNA input of the SMARTi+. For GSM1800 a ceramic filter (Z852) centered to 1842,5MHz with a non symmetrical output is used and connected to the SMARTi+ LNA input.

LNA: The LNA is located inside the SMARTi+ and is able to perform an amplification from ~ 20dB. The LNA is switchable (“On/Off”) and controlled by the SMARTi+

Mixer: The two mixers (GSM900/1800) are using for down conversion the LO1 signal. On the joint output of both mixers there will be an interference signal of 360MHz.

IF-Filter: The IF-Signal (360MHz) is passing a symmetrical SAW-Filter to filter out interference signals and undesired mix products.

PGC: There are 2 PGC amplifier used. The first on (before the demodulation) has a dynamic range from 80dB (-22dB up to 58dB) and can be switched in steps of 2dB. The programming of this PGC is done via the EGOLD+ with the signals (SYGCCL, SYGCDT, SYNSTR).

Demodulator: The demodulation is done via a Gilbert cell mixer, with help of the LO2 signal (1440MHz) divided by 4. The gained “I” and “Q” signals are amplified through an other PGC amplifier (10-16dB in 2dB steps) and after passing an internal switch, ready for further operation through the EGOLD+.

The required voltage VCC_SYN is provided by the N970

V1.0 Page 20 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

Hitachi Filter >>>>>>>> LNA >>>>>>>> Demodulator>>>>>>>> PGC

Z880 Bright Bright Bright

Filter: The EGSM900 and the GSM1800 filter are located inside the frontend module. The EGSM900-Filter is centered to a frequency of 945,5MHz and the GSM1800 to 1842,5MHz. Both symmetrical filter outputs are matched via LC-Combinations to the LNA input of the BRIGHT (D800)

EGSM 900 GSM1800 LNA: The LNA´s is located inside the BRIGHT and is able to perform an

amplification from ~ 20dB. The LNA is switchable (“On/Off”) and controlled by the Bright.

Demodulator: In opposite to the Infineon concept, the Hitachi chipset is not using an IF before demodulation. The Bright IC performs a direct demodulation of the received EGSM900 and GSM1800 Signals. To do so the LO1 is required. The channel depending frequencies for 900/1800MHz band are divided by 4 for EGSM900 and by 2 for GSM1800 internally.

PGC: After demodulation the “I” and “Q” signals are amplified by the internal PGC-Amplifier whereby die “I” and the “Q” path are amplified independently From each other. The performance of this PGC is 80dB (-22 up to 58dB), switchable in steps of 2dB. The control is realised through the EGOLD+ signals (SYGCCL, SYGCDT, SYNSTR). After passing an internal switch, the signals are ready for further processing through EGOLD+

The required voltage VCC_SYN is provided by the N840

V1.0 Page 21 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

from antenna

progr. signals

from LO1

to EGOLD+

Hitachi

from LO1

to EGOLD+

progr. signals

V1.0 Page 22 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

4.4.2 IC Overview

SMARTi+

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IC Overview

BRIGHT IV

V1.0 Page 24 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

4.5 Transmitter

4.5.1 Transmitter: Modulator and Up-conversion Loop

Infineon:

The K45 modulation is based on the principle of the “up-conversion modulation phase locked loop” and is accomplished via the SMARTi+ IC(D800).

The internal TX IF-LO provides the quadratic modulator working with the TX IF frequencies (GSM/PCN 424/428 MHz), by generating 1696 or 1712MHz frequencies, which are divided by 4. This so generated IF GMSK RF signal is compared in a phase detector with the down mixed GMSK RF output from the TX-VCO (Z861) TXVCO_OUT. To get the comparison signal, the TXVCO_OUT signal appearing at Pin 1and 2 of the (Z861)is mixed with LO1 signal. The output (tune) signal of the phase detector passes a discrete loop filter realised by capacitors and resistors, to set the TXVCO to the required frequency. The large loop band width (~1,5MHz) guarantees, that the regulating process is considerably quicker than the changes in the modulation signal. The TXVCO is a so-called two-in-one VCO, this means the VCO module contains the GSM900-VCO and the GSM1800-VCO in one housing. The TXVCO is switched from GSM to PCN by using the signal GSM_TX_VCOENQ from the EGOLD+ (TDMA Timer J13)

The required voltage VCC_SYN and VCC2_8 is provided by the N970

Hitachi: The Hitachi version works similar to the Infineon. The modulation is also based on the principle of the “up-conversion modulation phase locked loop” and is accomplished via the BRIGHT IC(D800). The internal TX IF-LO provides the quadratic modulator with the TX IF frequencies (GSM 45/46MHz / PCN 90/92 MHz) by generating 376/380/384MHz frequencies, which are divided 4 (GSM) or 2 (PCN). This so generated IF GMSK RF signal is compared in a phase detector with the down mixed GMSK RF output from the TX-VCO (Z861). To get the comparison signal, the GSM_PA_IN and PCN_PA_IN signal appearing at Pin 6and 10 of the (Z890) is mixed with the LO1 signal (divided by 2PCN or 4GSM). The output (PLLOUT) signal of the phase detector passes a discrete loop filter realised by capacitors and resistors to set the TXVCO to required frequency. The large loop band width (~1,5MHz) guarantees that the regulating process is considerably quicker than the changes in the modulation signal. The TXVCO is a so-called two-in-one VCO, this means the VCO module contains the GSM900-VCO and the GSM1800-VCO in one housing.

The required voltage VCC_SYN and VCC2_8 is provided by the N840

V1.0 Page 25 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

to PA

LO1

to PA

LO1

V1.0 Page 26 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

1.1.1.1 L

Vdd

Vss

Vdd

Vss

Vdd

Vss

Comp 2

Comp1

Out B

Out A

Vss

Vdd

BS

PA_ON

Gnd

TC

Ramp

Vr

Vf

Vhome

4.5.2 Transmitter: Power Amplifier

Infineon: The TXVCO_OUT signal from the TX-VCO is led to a driver stage (V901), activated by TXONPA, to ensure that both power amplifiers (N901 for PCN) and (N902 for GSM) get their required input level. The amplifiers are connected via L901 and L909 to Batt+. After amplification, a part of the TX output signal is decoupled via a directional coupler (realised by conductive tracks) and is equalised with the detector diode (V903). This so gained voltage is compared by D903 with the PA_RAMP signal provided by the

EGOLD+ (GAIM/BASEBAND H2). The resulting voltages VAPC_GSM and VAPC_PCN

are used to ensure that the PA is working within the required PCL´s.

D903 is activated through the signal TXONPA and switched to PCN by

PCN_TX_VCOENQ (EGOLD+ (TDMA Timer K12))..

After decoupling the signal passes on the way to the antenna the diplexer (Z900) and the antenna connector (X980).

The required voltage BATT+ is provided by the battery. The required voltage VCC2_8SW is provided N970.

Hitachi: The two output signals (PCN_PA_IN and GSM_PA_IN) from the TX-VCO are led to the power amplifier (Z900) passing a matching circuit. The PA is a “two in one” PA and, is connected directly to Batt+. The signal GSM_ON defines the used amplifier (PCN or GSM). After amplification, a part of the two output signals (TX_PCN_OUT and

TX_GSM_OUT) is decoupled via a directional coupler. The other part runs through

the antenna switch (Z880) and the antenna connector (X870) to the Antenna. The decoupled part is equalised by the detector diode (V920) and used from the (N920) to get a PA control voltage by comparing this voltage with the PA_RAMP signal provided from the EGOLD+ (GAIM/BASEBAND H2). The (N920) is activated through the signal TXONPA and TXON1.

The required voltage BATT+ is provided by the battery. The required voltage VCC2_8 is provided by N840.

Blockdiagram

V1.0 Page 27 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

Ri

Linear-

Regler [ASIC]

Linear-

Regler [ASIC]

Linearregler

IrDA

LED

2,0 A peak

current

150 µF

2,9V +-3%

2,65V +-3%

140mA max.

100mA max.

2,8V +- 3,5%

75 mA max.

145 mA max.

35 mA(pk), 7 mA(avg)

80 mA

EGOLD Core

Magnetischer Ringer

Flash, SRAM, SIM, Light, Soundchip, Vibra-motor, Altimeter

EGAIM, EGOLD Portpins, LCD controller

Powercontrol-ASIC, TXVCO

Transceiver IC, VCXO

Leerlaufspannung: 3,2V..4,2V

NiMH

PA

+Treiber +Regelung

Linear-

Regler [ASIC]

2,07V (1,92V) +- 3%

VDDRTC

Linear-

Regler [ASIC]

2,0V +-5%

140mA max.

Audio-

Amplifier

[ASIC]

5 Power Supply

5.1 Overview and Voltages

V1.0 Page 28 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

Overview of HW Structure

All power supply functions of the mobile phone, except the RF-Part, are carried out by the power supply ASIC (D361)

General:

The pin POWER of the I/O-Connector is used for charging the battery. For accessories, which provide a variable charging current, the current will be set via a pin SB (current byte) (e.g. S25 chargers corresponding to Car Kits etc.).

- The S45/ME45 power supply is unregulated and cannot be controlled by the SB signal.

- The SB signal is used to distinguish between various chargers. The following restrictions must be considered:

- The phone cannot be operated without battery.

- The phone will be damaged if the battery is inserted the wrong way

- In the charging branch a fuse element is inserted against over current.

5.2 Power Supply ASIC

The power supply ASIC (D361) contains the following functions:

- Control of “Switch On” of the mobile phone via the ON/OFF switch.

- Recognition of external chargers connected on POWER.

- Control of “Switch On” of the mobile phone via the ON/OFF1 (RTC)

- Watchdog monitoring

- Control of mobile phone “SWITCH OFF” via WATCHDOG_P connection.

- “Switch off “of mobile phone in the case of overvoltage at battery connection.

- Generation of RESET signal for EGOLD+ and Flash

- Voltage generation via “Linear regulator 2.90 V “

- Voltage generation via “Linear regulator 2.65 V “

- Voltage generation via “Linear regulator 2.07 V “

- Battery charge support: interrupted if there is an over-temperature

- Software-controlled switching of voltage supply for the accessories

- Light switching

- Voltage generation for “SIM-CARD”

- VIBRA switching

- Ringer tone switching

- Audio switching

Switch “ON” sequence

- Falling edge recognition KB7, or RTC_INT

- Generation of the “2,07; 2,65; 2,9” voltages

- Generation of the “RESET_2,0V and RESET_2,65V”

- 32,768 KHz oscillator

- Generation of the “Watch Dog” signal through the EGOLD+

after “POWER_ON”

- 13MHz oscillator

V1.0 Page 29 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

“Switch-On” timing

V1.0 Page 30 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

“Switch-Off” timing

“PIN-OUT” ASIC D361

V1.0 Page 31 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

5.3 Battery and Charging

5.3.1 Battery

A LiIon battery with a nominal capacity of 840mAh is used for the S/ME45 series and a NiMH battery with a nominal capacity of 550mAh for the C45. A temperature sensor (22k at 25°C) is integrated to monitor the battery temperature.

Battery connector:

5.3.2 Charging Concept

The battery is charged in the unit itself. The hardware and software is designed for Li-Ion or NiMH with 4.2V technology. The battery will be charged as long as the GAIM part of the EGOLD+ measures changes in the values of the battery voltages during the charging process. There are two ways to charge the battery: Normal charging also called “fast charging” Trickle charging

Normal Charging

As soon as the phone is connected to an external charger, charging starts. The customer can see this via the “Charge” symbol in the display Charging is enabled via a FET-Switch (V342) in the phone. This FET-Switch activates the circuit form the external charger to the battery. The EGOLD+ takes over the steering of this switch depending on the charge level of the battery, whereby a disable function in the ASIC (D361) hardware can override/interrupt the charging in the case of overvoltage of the battery (only in case of NEC batteries). The charging software is able to charge the battery with an input current within the range of 350-600mA. If the FET-Switch is switched off, no charging current will flow into the battery (exception is trickle charging, see below). For controlling the charging process it is necessary to measure the ambient (phone) temperature and the battery voltage.

V1.0 Page 32 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

For temperature detection, a NTC resistor (22k at 25°) is assembled in the battery pack. Via the pin 2 of the battery connector connected to the EGOLD+ (GAIM L3) is carrying out the measurement.

The voltage is measured from the GAIM-part of the EGOLD+ (see description In chapter 7)

Trickle charge

If the phone has not been used for a longish time (longer than approx. 1 month), the battery could be totally self-discharged. (battery voltage less then 3,2V), so that it is not possible to charge the battery via the normal charging circuit. In this case only trickle charge is possible. The STV-ASIC (D361) controls the charging circuit himself.

- Battery voltage below 2,8 Volt charging current 20mA.

- Battery voltage below 3,2 Volt charging current 50mA.

- Battery voltage over 3,2 Volt “Normal charging”.

Power supply for the ASIC (D361) in this mode is the external charger. (VDD_CHARGE) The switch into normal charging mode, is done automatically if the required voltage is reached.

Trickle Charging Power Supply “Normal/Trickle” charging activation

!! Attention!!

- a charger voltage >15V can destroy resistors or capacitors in the charging path

- a charger voltage >20V can destroy the MOS-FET switch transistor in the

charging path.

V1.0 Page 33 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

Display

Panther, Eagle: 101 x 80

SRAM

4 Mbit

EGOLD+

PMB6850

KeyboardConnector

RF-

Interface

IrDa

(SIR)

SIM

3V & 1,8V

SIM-Switch 6 Register LDO 2,07V I2C LDO 2,65V LDO 2,9V OUTPORT RTC-LDO 2,0V GAIMSwitch

Schalke

ON/OFFCharging, Light-PWM Functions Trickle Charge Dimmer Vibra-Switch

LiIon-Akku 850 mA Vibra

GAIM-

Voltage-

Devider

A(0:21), D(0:15), RD, WR

CS_FLASH1, 2.0V,

(2.9V), RESET_2.0V

CS_SRAM, BHE, 2.0V

KB(0, 2-9),

LIGHT, GND, 2.9V

VMIC, MICP1, MICN1

LCD_CS, LCD_RS, LCD_DAT, LCD_CLK, LCD_RESET, 2.65V

I2CC, I2CD, I2CI

I²C

AKKU_TYP,

BATT+

CCVCC

CCRST, CCCLK, CCIO

RX_IR, TX_IR, IRDA_OFF,

2.9V, BATT+

RXON_PCN, TXON_PCN,

TXON_GSM,

GSM_TX_VCXOENQ,

TX_PWM, PCN_TX_VCXOENQ, PLLON, RXON_GSM,

SLEEP, MEAS_ON,

RXON_PCN

LIGHT

CCVZQ

RESET_2.65V CHARGE_uC WA_DOG, RTC_INT, SLEEP, LIGHT_OFF, VCXOEN

KB7

SB, POWER, BATT+, TX, RX, ZUB_CLOCK,

ZUB_DATA, GND_MIC, MICP2

Flash

16 Mbit

Flash

32Mbit

CS_FLASH2, 2.0V, (2.9V), WR_PROT, RESET_2.0V

I/O-Connector

EPP1, EPP2

BATT+

Display-

Backlight

ME45 / S45

LIGHT, 2.9V

3

6

12

2

12

2

TBAT,

MEAS_

ON,

TENV,

TVCXO,

BREF,

RF_CO

DE

28 (HiSaRo) 26 (EPSON)

VDD_CHARGE

Accessories-

LDO

ZUB_ON

6 Logic Part

6.1 Overview Logic/control

Overview to the HW structure

The hardware in the K45 can be split up into two function groups: At first there is the baseband chipset with its periphery comprising the EGOLD+, Flash and power supply ASIC. This function group is basis for all equipment variants.

V1.0 Page 34 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

The logic part of the K45 consists of:

The EGOLD+

Hardware µC-part Software µC-part

Software SP (Signal Processor) part Equaliser EGAIM inside the EGOLD+ RTC (Real Time Clock)

V1.0 Page 35 of 54 ICM MP CC ST K45 Company Confidential © Copyright Siemens AG 12/01

P ROM

48k x 16

P RAM

5k x 16

Y RAM

2k x 16

X ROM

18k x 16

X RAM

6k x 16

PRAM

1k x 16

Bus

Interface

Unit

Shared Memory

Dual Port 512 x 16

Keypad

Interface

GSM

TDMA Timer

TAP Controller

JTAG

Boundary Scan

GMSK Modulator

Voiceband Filters

RX and TX

Baseband Filter

A51/52

Cipher

Unit

SIM card

Interface

High Speed

(F=512, D=8/16)

32 kHz

13 MHz / 32 kHz

52 MHz

Dual Port RAM

1k x 16

Interrupt Controller

OCEM

E-GOLD Architecture

SRAM

xk x 16 (x = 0... 64)

DSP Timer2

X-Bus

PD-Bus

Interleaving

2 x 28 x 116 x 1

PROM

1k x 16

Boot

Block

Company confidential

De-Interleaving 12k x 4

16 bit write access

4/16 bit read access

DSP Serial

Communication

Interface

Enhanced Handsfree / DAI

3 3

9

2 MHz (to GAIM)

RTC

External

Bus & Port

Controller

AFC Unit

Pulse-Carry Mod.

Interrupt

Extension

60

Power

Management

DSP Timer1DSP Timer1

OAK+ DSP

 Interleaving / De-Interleaving

 Speech Decoding (FR, HR, EFR)

 Speech Coding (FR, HR, EFR)

 Level Measurement

 Channel Decoding (FR, HR, EFR)

 Channel Coding (FR, HR, EFR)

 Equalization

 Encryption / Decryption

 Voice Memo / Voice Dialing

Viterbi

HW

Accelerator

ID Register

SSC

SPI

compatible

ASC0

Autobaud

Detect

ASC1

8

523

2

5

Multicore

Debug Support

SEIB

CAPCOM

2 x 8 bit

16

RF Control

4

5

8 16

3

5

GPT1/GPT2

Watchdog

8

CS(4:0)2

Interrupt Controller

READY#

NMI#

HOLD#

HLDA#

CLKOUT

RSTOUT#

Osc.

32.768 kHz

Enable Signals to

X- and PD-Bus

Peripherals

requires ext. crystal

and special bondout

OCDS DPEC

MCU

C166CBC

Clock Generation

Peripheral Enable

Generator

A(20:0)

21 24

64

to MCU &

Clock Generation Unit

6

16 bit I/O Ports

H. Meschede, HL AS CR CE,

Audio & Speech

TMS

TCK

TDO

TDI

VBIN

VBOUT

DACI

DACQ

BPDM2

BPDM1

TRST

VCLK

F13M

CLKANA

VDDRTC

TXD0 / - / PE.4

RXD0 / - / PE.3

TXDD / TXD1 / PF.6

TFSD / T2IN / PF. 10

SCLK / T6EUD / PF.8

RFSD / - / PF.9

RXDD / RXD1 / PF.7

VDDa

VSSa

VCXO_EN / - / PE.8

CLKSXM / A21 / PF.5

MRST / - / PE.7

MTSR / - / PE.6

SSCCLK / - / PE.5

F32K

RTCOUT

PDOUT / A23 / PF.4

TXD1 / CC04IO / PE.0

RXD1 / EX1IN & T5EUD /

PE.1

DSPOUT0 / A22 / PF.3

D(7:0)

AFC

READY / WAKEUP / PC.1

CC02IO / - / HOLD & DSPOUT1 / PF.0

CC01IO / NMI & DSPOUT2 / PE.2

HLDA / CC03IO & DSPIN0 & T2IN / PC.3

T5IN / T2EUD & T3IN / PC.4

CC06IO / A21 & EX7IN / PF.11

CLKOUT / CC05IO / PC.0

DSPOUT1 / A22 / PF.1

MON1

MON2

TRIGIN

TRIGOUT

CS2 / CC02IO / PF.12

CS3 / EX4IN & DSPIN0 & T4EUD / PF.13

CS4 / DSPOUT2 / PF.14

RD

WR

CC00IO / T3OUT / PC.2

CS0

CS1

RESET_IN

D8 / CC20IO / PA.8

D9 / CC16IO / PA.9

D10 / - / PA.10

D11 / - / PA.11

D12 / EX5IN / PA.12

D13 / T7IN / PA.13

D14 / CC22IO / PA.14

D15 / CC18IO / PA.15

BHE / CC00IO / PF.15

RSTOUT / EX6IN & T3EUD / PF.2

VDD2.(4:1)

VDD2.0x, x=a,b,c

VSS2.(4:1)

VSS2.0x, x=a,b,c

I/O Driver

VDD1.(2:0)

VSS1.(2:0)

Core

GAIMDATA

GAIMSTR

GAIMCLK

RFSTR1

RFSTR0

RFDATA

RFCLK

RFSTR4 / EX2IN / PD.2

RFSTR3 / CC18IO / PD.1

RFSTR2 / CC07IO / PD.0

T_OUT12 / A23 / PD.11

T_OUT11 / CC19IO / PD.10

T_OUT10 / EX1IN & DSPIN1 / PD.9

T_OUT9 / T7IN & EX3IN / PD.8

T_OUT8 / CC23IO / PD.7

T_OUT7/ CAPIN / PD.6

T_OUT6 / T4IN / PD.5

T_OUT5 / CC17IO / PD.4

T_OUT4 / DSPIN0 / PD.3

CCIN

KP9 / CC18IO / PB.9

KP8 / CC22IO / PB.8

KP7 / T7IN / PB.7

KP6 / EX5IN / PB.6

T_OUT3

T_OUT2

T_OUT1

T_OUT0

GAIMRXON

KP5 / - / PB.5

KP4 / - / PB.4

KP3 / CC16IO / PB.3

KP2 / CC20IO / PB.2

KP1 / CC06IO / PB.1

KP0 / T2EUD & EX0IN / PB.0

CCRST

CCLK

CCIO

CCIOSW / T6OUT & T0IN

& T6IN / PB.11

CCVZ / - / PB.10

6.2 EGOLD (PMB6850) V1.3c/V2.x

6.3 EGAIM inside the EGOLD+

EGAIM inside the EGOLD+

6.3.1 Tasks of the EGAIM inside the EGOLD+

- Measurement of Battery and Ambient temperature

- Measurement of Battery Voltage

- A/D conversion of MIC-Path signals incl. coding

- D/A conversion of EP-Path signals incl. decoding

- Generating of the PA-Control Signal “PA_Ramp”

Measurement of Battery and Ambient Temperature

The temperature is measured as a voltage equivalent of the temperature on the voltage dividers R131,R136,R135 for the ambient temperature by the EGAIM. The battery temperature is measured directly at (l3) of the EGOLD+. For this, the integrated  converter of the EGAIM of the RX-I base band branch is used. This  converter compares the voltage of TBAT and TENV internally with a reference voltage BREF. Via an analog multiplexer, either the RX-I base band signal, or the TBAT signal and the TENV signal can be switched to the input of the converter. The signal MEAS_ON from the EGOLD+(GSM TDMA-TIMER G11) activates the measurement and is used to generate to BREF by the help of R137,R132

Measurement of the Battery Voltage

The measurement of the battery voltage is done in the Q-branch of the EGAIM. for this BATT+ is connected via a voltage divider R118, R120 to the EGOLD+

(GAIM N2) (Input limitation 1.33V to 5.91V) .An analog multiplexer does the

switching between the baseband signal processing and the voltage measurement.

A/D conversion of MIC-Path signals incl. coding

The Microphone signals (MICN2, MIpN2, MICP1, MICN1) arrive at the voiceband part of the EGAIM. For further operations the signals will be converted into digital information, filtered, coded and finally formed into the GMSK-Signal by the internal GMSK-Modulator. This so generated signals (MOD_A, MOD_AX, MOD_B, MOD_BX) are given to the SMARI IC / Bright IC in the transmitter path.

D/A conversion of EP-Path signals incl. decoding

Arriving at the Baseband-Part the demodulated signals (MOD_A, MOD_AX,

MOD_B, MOD_BX ) will be filtered and A/D converted. In the voiceband part

after decoding (with help of the uC part) and filtering the signals will be D/A converted amplified and given as (EPP1, EPN1, EPP2, EPN2) to the internal earpiece or the external loudspeaker.

Generation of the PA Control Signal (PA_RAMP)

The RF output power amplifier needs an analog ramp up/down control voltage. For this the system interface on EGOLD+ generates 10 bit digital values which have to be transferred serially to the power ramping path. After loading into an 10 bit latch the control value will be converted into the corresponding analog voltage with a maximum of ~2V

6.4 Real Time Clock (integrated in the EGOLD+)

The real time clock is powered via its own voltage regulator inside the ASIC (D361) directly from the battery. The so gained voltage VDD_RTC is buffered by a capacitor (C369) to keep the data (e.g. clock) in the internal RAM during a battery change for at least 30 seconds. An alarm function is also integrated which allows to switch the phone on and off. via RTC_INT The reference oscillator for the RTC is (Z100)

6.5 SRAM

Memory for volatile data. Memory Size: 4Mbit Data Bus: 16Bit Access Time: 70ns

The SRAM (D250) is provided with 2.07V from the ASIC (D361) . It is used from the EGOLD+ to store temporally data. The communication is controlled and activated from the EGOLD+.

6.6 FLASH

Non-volatile but erasable and re-programmable (software update) program memory (Flash) for the EGOLD and for saving user data (menu settings), linguistic data (voice memo) and mobile phone matching data. There is a serial number on the flash which cannot be forged.

Memory Size: 48 Mbit (32 Mbit + 16 Mbit) Data Bus: 16 Bit

Access Time: 70ns (32 Mbit) 90ns (16Mbit) Boot Block: Top

6.7 IRDA

Infrared data interface, compatible with the IrDA-Standard Version 1.2, Low-Power, with a maximum transmission rate of 115.2kbps and a maximum transmission distance of at least 0.3m.

Schalke Asic

MUX

PWM (50% duty cycle)

EPN2

EPP2

EPN1

EPP1

PMB6850

EGold+



AUDO N

AUDO P

I/O-connector

A1

A2

B1

B2

C1

C2

RINGIN



Headset

MICP2

MICN2

MICP1

MICN1

Internal

speaker

Internal

microphone

ME45, S45: Audio-concept

7 Acoustics

7.1 General

The Electro-Acoustic components are: a) The Vibra

b) The Microphone

c) The Loudspeaker/Ringer

3,6V..4,2V

15,5..20,3µs

50µs

0,5s 0,5s

D361

7.2 Vibra

The vibrator is assembled in the lower case shell. The electrical connection is carried out via spring contacts The Vibra is driven and controlled from the power supply ASIC (pin B3)via the signal VIBRA The vibrator is directly connected to the ASIC´s 2,9V. The diode V301 is used to protect the circuit against over voltage and switching spikes.

Vibra-Timing

7.3 Microphone and Loudspeaker (Ringer)

7.3.1 Loudspeaker

Loudspeaker (EPP1_FIL, EPN1_FIL, EPP2, EPN2) and Microphone (MIC2, MICN2-

MICP1, MICN1) are connected directly to the Voiceband-Part of EGOLD+

7.3.2 Microphone

Both Microphones are directly connected to the EGOLD+.(Voiceband F1-F4) via the signals MICN1, MICP1 (Internal Microphone )and MICN2, MICP2 (External Microphone/Headset). Power supply for the Microphone is

VMIC (Voiceband E1)

7.3.3 Loudspeaker/Ringer

The internal Loudspeaker (Earpiece) is connected to the voiceband part of the EGOLD+ (VOICEBAND D1,E2) via the mono audio amplifier inside the ASIC (D361). Input EPN1_FIL - EPP1_FIL Output to earpiece EPN1 - EPP1 The ringing tones are generated with the loudspeaker too. To activate the ringer, the signal RINGIN from the EGOLD+ (Miscellaneous,E9) is used

D361

8 Illumination:

8.1 Illumination

The Light is switched via an analogue switch inside the ASIC (D361). It is controlled from the EGOLD+ (TDMA-TIMER,L15) with the signal LIGHT_OFF. Output is the signal LIGHT, which is connected via the MMI connector X550 to the keypad LED´s. and directly to display backlight section

9 SIM-CARD and Connectors

9.1 SIM-Card

The SIM-CARD is supplied via X520 at pin2 with CCVCC (2,9V) The CCVCC is a ASIC (D361) switched 2,9V voltage, activated by CCVZQ from the EGOLD+(Address-Data G13) If no SIM-CARD is connected, or if there is no response (CCIO) from the SIM-CARD, the EGOLD+ tries 3 times to connect the SIM-CARD. After this time the EGOLD+ stops trying. That means, if the EGOLD+ is losing the connection while normal operation of the mobile phone, the mobile must be switched off and on again. The communication between the EGOLD+ and the SIM-CARD is done via the CCIO

X520 pin5 by using CCCLK as a clock signal.

The diodes V520/521 are used to protect signal lines versus switching peaks.

9.2 Display connector

The display is provided with 2,65V from the ASIC (D361). The communication with the EGOLD+ by the LCD-Signals, directly connected to the EGOLD+

LCD_CS SIM L9 LCD_RESET Miscellaneous N7 LCD_RS Serial-Interface R14 LCD_CLK Serial-Interface P11 LCD_DAT Serial-Interface N11

9.3 MMI-Connector

The MMI-Connector is used to connect the additional Keypad-Board with the RF-Board. Via this connection the Keypad-Board is supplied with 2,9V and the LIGHT Signal for the Keypad-LEDs. The lines KB2 up to KB9 are directly connected to the EGOLD+ (Keypad )

Name

IN/OUT

Notes

1

GND

2

SB O Control line for external power supply

3

POWER

I

Power input from external power supply

4

FBatt+

O

Voltage for external accessories.

5

TX O Serial interface

6

RX I Serial interface

7

ZUB_CLK

I/O

Clock line for accessory bus Use as DTC In data operation

8

ZUB_DATA

I/O

Data line for accessory bus. Use as CTS in data operation

9

GND_MIC

For external microphone

10

MICP2

I

External microphone

11

EPP2

O For external loudspeaker

12

EPN2

O

For external loudspeaker

MMI-Connector

Name

IN/OUT

Notes

1

GND

2

Akku_Temp

O

Temperature control of the battery pack.

3

Battt +

I/O

Battery voltage

9.4 Battery Connector

The battery is connected via the battery connector (assembled in the lower case shell) to the battery contacts (XG346) on the RF-Board. Directly connected to battery, there is a voltage regulator (N386). This regulator Is used to provide the external accessories with the required voltage. To extend STAND-BY time, the regulator is switched on with the signal ZUB_On only if accessories are recognised. Responsible for the ZUB_ON signal is the ASIC (D361).