Siemens SX1 Service Manual

SX1

Level 2.5e

Repair Documentation

V 1.1

Version Date Department Notes to change

V 1.0 Nov 2003 ICM MP CCQ GRM T New document

V1.1 Dec 2004 ICM MP CCQ GRM T New MMI Component

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Table of Contents:

1 LIST OF AVAILABLE LEVEL 2,5E PARTS SX1................................................ 5

2 REQUIRED EQUIPMENT FOR LEVEL 2,5E .................................................... 10

3 REQUIRED SOFTWARE FOR LEVEL 2,5E SX1 ............................................. 10

4 RADIO PART .................................................................................................... 11

4.1 Power Supply RF-Part .................................................................................. 12

4.2 Frequency generation .................................................................................. 12

4.2.1 Synthesizer: The discrete VCXO (26MHz).........................................................................12

4.2.2 Synthesizer: LO1................................................................................................................13

4.2.3 Synthesizer: LO2................................................................................................................16

4.2.4 Synthesizer: PLL ................................................................................................................17

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

4.4 Receiver......................................................................................................... 19

4.4.1 Receiver: EGSM900/GSM1800/GSM1900 –Filter to Demodulator...................................19

4.4.2 IC Overview........................................................................................................................21

4.5 Transmitter.................................................................................................... 22

4.5.1 Transmitter: Modulator and Up-conversion Loop...............................................................22

4.5.2 Transmitter: Power Amplifier..............................................................................................22

5 LOGIC ............................................................................................................... 23

5.1 Modem System ............................................................................................. 24

5.1.1 EGOLD+.............................................................................................................................24

5.1.2 SRAM.................................................................................................................................28

5.1.3 FLASH................................................................................................................................28

5.1.4 SIM .....................................................................................................................................28

5.1.5 Vibration Motor...................................................................................................................29

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

5.2.1 Pinout diagram ...................................................................................................................30

5.2.2 Power Supply Operating mode: .........................................................................................31

5.2.3 Power Supply Functions:....................................................................................................31

5.3 Battery ........................................................................................................... 33

5.4 Charging Concept......................................................................................... 34

5.5 Application system....................................................................................... 37

5.5.1 Application processor.........................................................................................................37

5.5.2 SDRAM...............................................................................................................................37

5.5.3 Flash...................................................................................................................................38

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5.6 Power Supply ASIC Sofia............................................................................. 42

5.6.1 Pinout diagram ...................................................................................................................43

5.6.2 Power Supply Operating mode: .........................................................................................44

5.6.3 Regulator............................................................................................................................44

6 FM RADIO......................................................................................................... 46

7 BLUETOOTH ................................. FEHLER! TEXTMARKE NICHT DEFINIERT.

8 INTERFACES.................................................................................................... 48

8.1 Board to Board connector ........................................................................... 48

8.2 Vibra............................................................................................................... 50

8.3 Earpiece......................................................................................................... 51

8.4 Microphone ................................................................................................... 52

8.5 Battery ........................................................................................................... 52

8.6 IO Connector with ESD protection.............................................................. 53

8.6.1 IO Connector – New Slim Lumberg ...................................................................................53

8.6.2 ESD Protection with EMI filter............................................................................................54

8.7 SIM ................................................................................................................. 55

8.8 Display........................................................................................................... 55

9 ACOUSTIC........................................................................................................ 57

9.1 Microphone ................................................................................................... 57

9.1.1 Mechanical .........................................................................................................................57

9.1.2 Electrical.............................................................................................................................57

9.2 Soundchip ..................................................................................................... 58

9.3 Earpiece/Loudspeaker ................................................................................. 59

9.3.1 Mechanical .........................................................................................................................59

9.3.2 Electrical.............................................................................................................................59

10 DISPLAY AND ILLUMINATION..................................................................... 60

10.1 Display ........................................................................................................ 60

10.2 Illumination ................................................................................................ 60

11 KEYBOARD ................................................................................................... 61

12 BLUETOOTH (ONLY S55)............................................................................. 61

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12.1 Bluetooth Voltage Regulator .................................................................... 62

13 IRDA ............................................................................................................... 63

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1 List of available level 2,5e parts SX1

Main Board

ID-No Type Name, Location Part-No.

D800 IC Transceiver IC V20820-L6105-D670 D890 VCO Transmitter_VCO V20820-L6132-D670 D0950 IC Power Supply ASIC V30145-J4682-Y48 D1100 IC FEM Radio V20810-U6085-D670 D2300 IC Egold+ V39197-F5019-F415 D2700 IC Bluetooth_IC V39197-F5021-F381

C2803 Capacitor Cap. VDD_SIM V39377-F6105-K C2811 Capacitor Cap. VCC2 8-VCCSYN V39344-F1225-K12 C2814 Capacitor Cap. VDD_CORE V39344-F1225-K12 C2815 Capacitor Cap. VDD_ANALOG-VDD_IO V39344-F1225-K12 C2816 Capacitor Cap. VDD_RTC V39392-F1107-M

N3225 IC Volt.Regulator_Camera V20810-C6065-D670 R959 Resistor Temp_Resistor V24852-C273-J2 V850 Transistor Tran._VCO_Switch V1100 Diode Capa_Diode FEM V20840-D61-D670 V1101 Diode Capa_Diode FEM 1 V20840-D61-D670 V2182 Transistor Tran._Akku V20840-C4014-D670 V2501 Diode Diode_IO Connector V20840-D3084-D670 V2600 Transistor Tran._Vibra V20840-C4014-D670 V2601 Transistor Tran._Vibra 1 V24851-Z9112-Z998 V2700 Diode Diode_Bluetooth V20840-D73-D670 V2800 Transistor Tran._Charge V20830-C1107-D670 V2801 Transistor Tran._Power V20830-C1107-D670 V2802 Diode Diode_Power V20840-D3091-D670 Z850 VCO Z851 Filter Filter_BALUN V30145-K260-Y41 Z880 IC Ant_Switch_Diplexer V30145-K280-Y244 Z900 IC Power_Amplifier V39197-F5005-F487 Z950 Quartz Oszillator_26MHz V39197-F5005-F33 Z2300 Quartz Quarz/Egold V30145-F102-Y10 Z2500 Filter Logic/IO_Interface V39197-F5000-F116 Z2700 Filter Filter_Bluetooth V30145-K280-Y256

1LO_VCO

V20820-C6047-D670

V30145-G100-Y105

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MMI Board

ID-No Component ID Part-No.

R2002 R2003 R2001 R1100 R3004 R3011 R3019 R3020 R4004 R4009 R4011 R2011 R3000 R3009 R3012 R4000 R3015 R3016 R3017 R3018 R2010 R1005 R1006 R1007 R1008 R1009 R1010 R1011 R1012 R1013 R1014 R1015 R1016 R1017 R1018 R1019 R1020 R1021 R1022 R1023 R3002 R3014 R4002 R3003

R2002/R2003 R2002/R2003 R2001 Res_Type1 Res_Type1 Res_Type1 Res_Type1 Res_Type1 Res_Type1 Res_Type1 Res_Type1 R2011 R3000/R3009/R3012 R3000/R3009/R3012 R3000/R3009/R3012 R4000 Res_Type2 Res_Type2 Res_Type2 Res_Type2 R2010 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3 Res_Type3

V24852-C -X

V39246-F4000-G V24842-C -X

V24842-C -X V24842-C -X V24842-C -X V24842-C -X V24842-C -X V24842-C -X V24842-C -X

V24852-C10-J2 V24842-C100-J

V24842-C100-J V24842-C100-J

V24842-C330-J V24852-C560-J2

V24852-C560-J2 V24852-C560-J2 V24852-C560-J2

V24852-C680-J2 V24842-C101-J

V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J V24842-C101-J

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R1002 R1003 R1024 R2013 R1201 R1202 R1203 R1204 R1205 R1206 R1207 R2009 R3010 R3005 R2006 R2007 R1000 R1004 R2005 R3013 R1200 R1212 R1001 R3001 R3008 R2000 R1208 R1209 R1210 R1211 R1222 R2008 R3007 C2014 C3000 C1200 C1201 C1202 C1203 C1204 C1205 C1206 C1207 C1208 C1209 C1210 C2017 C2006

R1002/R1003 R1002/R1003 R1024 R2013 Res_Type4 Res_Type4 Res_Type4 Res_Type4 Res_Type4 Res_Type4 Res_Type4 R2003 R3010 R3005 R2006/R2007 R2006/R2007 Res_Type5 Res_Type5 Res_Type5 Res_Type5 R1200/R1212 R1200/R1212 R1001/R3001/R3008 R1001/R3001/R3008 R1001/R3001/R3008 R2000 Res_Type6 Res_Type6 Res_Type6 Res_Type6 Res_Type6 R2008 R3007 C2014 C3000 Cap_Type1 Cap_Type1 Cap_Type1 Cap_Type1 Cap_Type1 Cap_Type1 Cap_Type1 Cap_Type1 Cap_Type1 Cap_Type1 Cap_Type1 Cap_Type1 C2006

V39246-F4121-G

V24842-C121-J V24852-C331-J2 V24852-C681-J2

V24852-C681-J2 V24852-C681-J2 V24852-C681-J2 V24852-C681-J2 V24852-C681-J2 V24852-C681-J2

V24842-C102-J V24842-C152-J V24842-C472-J V24842-C682-J

V24842-C682-J

V24842-C103-J

V24842-C103-J V24842-C103-J V24842-C103-J

V24852-C393-J2

V24842-C473-J

V24842-C473-J V24842-C473-J

V24852-C104-F2 V24842-C224-J

V24842-C224-J V24842-C224-J V24842-C224-J V24842-C224-J

V24842-C334-J V39197-F5005-F975 V24843-C9060-D805 V24843-C9030-C305 V24843-C9180-J5

V24843-C9180-J5 V24843-C9180-J5 V24843-C9180-J5 V24843-C9180-J5 V24843-C9180-J5 V24843-C9180-J5 V24843-C9180-J5 V24843-C9180-J5 V24843-C9180-J5 V24843-C9180-J5 V24843-C9180-J5

V24843-C101-J5

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C2024 C2025 C2016 C3018 C4004 C2001 C1000 C1001 C1002 C1003 C2000 C2002 C2005 C2007 C3001 C3002 C3006 C3007 C3008 C3009 C3010 C3011 C3012 C3013 C3014 C3015 C3016 C3017 C3021 C3022 C4000 C4001 C4002 C4003 C4005 C2003 C2004 C2008 C2019 C2018 C2012 C3024 C2009 C2010 C2011 C2015 C2020 C2021

C2024/C2025 C2024/C2025 C2016 C3018/C4004 C3018/C4004 C2001 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type2 Cap_Type3 Cap_Type3 Cap_Type3 Cap_Type3 C2018 C2012 C3024 Cap_Type4 Cap_Type4 Cap_Type4 Cap_Type4 Cap_Type5 Cap_Type5

V24853-C8121-G5

V24853-C9102-K6 V24843-C102-K6

V24843-C102-K6

V24853-C9473-M4 V24853-C9104-M4

V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4 V24853-C9104-M4

V24853-C6224-M6

V24853-C6224-M6 V24853-C6224-M6 V24853-C6224-M6

V39377-F4474-M V39377-F6105-K V24853-C6105-K6 V39377-F6225-M

V39377-F6225-M V39377-F6225-M V39377-F6225-M

V39375-F6106-M

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C2023 C3005 C2022 C2013 L2001 L2002 V2000 V2003 V2001 V2001 V20840-D5035-D670 V1204 V1204 V20840-C4057-D670 V2002 V2002 V20830-C1121-D670 D4001 D4001 V30113-D1500-A2 D2002 D2002 V30145-J4682-Y44 D4000 D4000 V20810-F6232-D670 D3003 D3004 D3000 D1000 D3001 Z3001 Z3001 V39197-F5021-F966 Z3000 Z3000 V30145-G100-Y103 C3003 C3004

Cap_Type5 Cap_Type5 C2022 C2013 L2001/L2002 L2001/L2002 V2000/V2003 V2000/V2003

D3003/D3004 D3003/D3004 D3000 D1000/D3001 D1000/D3001

C3003/C3004 C3003/C3004

V39375-F6106-M V39375-F6106-M

V39391-F1336-M V39344-F1225-K12 V39151-F5103-M8

V39151-F5103-M8

V20840-D5078-D670

V20810-B6129-D670

V39197-F5003-F786 V20810-B6079-D670

V20810-B6079-D670

V24843-C9150-J5

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2 Required Equipment for Level 2,5e

- GSM-Tester (CMU200 or 4400S incl. Options)

- PC-incl. Monitor, Keyboard and Mouse

- Bootadapter 2000/2002 (L36880-N9241-A200)

- Adapter cable for Bootadapter due to new Lumberg connector

- Troubleshooting Frame SX1 (F30032-P297-A1) MMI (F30032-P351)

- Power Supply

- Spectrum Analyser min. 4GHz

- Active RF-Probe incl. Power Supply

- Oscilloscope incl. Probe

- RF-Connector (N<>SMA(f))

- Power Supply Cables

- Dongle (F30032-P28-A1) if USB-Dongle is used a special driver for NT is required

- BGA Soldering equipment

Reference: Equipment recommendation V1.2 (downloadable from the technical support page)

3 Required Software for Level 2,5e SX1

- Windows NT Version4 or Win2000

- Winsui version1.43 or higher (OMAP for MMI)

- Software for GSM-Tester ( Cats(Acterna/Wiltek) or CMU-GO(Rohde&Schwarz) )

- Software for reference oscillator adjustment

- Internet unblocking solution

- Dongle driver for USB-Dongle if used with WIN NT4

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4 Radio Part

The radio part of the SX1, is using a Hitachi The radio part is designed for Tripple Band operation, covering EGSM900, GSM1800 as well as GSM

1900 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 located

inside the ASIC. The voltages for the logic part are generated by the Power-Supply ASIC too. The transmitter part converts the I/Q base band signals supplied by the logic (EGOLD+) into RF-

signals with characteristics as defined in the GSM recommendation ( 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 are further processed by the logic (EGOLD+).

The synthesizer generates the required frequencies for the transmitter and receiver. A 26MHz 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.

www.etsi.org) After amplification

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VCC_

4.1 Power Supply RF-Part

The voltage regulator for the RF-part is located inside the ASIC D2802. It generates the required 2,8V “RF-Voltages” named VCC2_8 and VCC_SYN . The voltage regulator is activated as well as deactivated via M_RF1_EN

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

Circuit diagram

(TDMA-Timer H16) and VCXOEN_UC (Miscellaneous R6) provided by the

CC2_8

SYN

4.2 Frequency generation

4.2.1 Synthesizer: The discrete VCXO (26MHz)

The SX1 mobile is using a reference frequency of 26MHz for the Hitachi chip set. The generation of the 26MHz signal is done via a TVCXO Z950. TP (test point) of the 26MHz signal is the TP 2310

The oscillator output signal 26MHz_RF is directly connected to the BRIGHT IC (pin 38) to be used as reference frequency inside the Bright (PLL). The signal leaves the Bright IC as BB_SIN26M at (pin 36) to be further used from the EGOLD+ (D100

Bright 4

To compensate frequency drifts (e.g. caused by temperature) the oscillator frequency is controlled by the (AFC) signal, generated through the internal EGOLD+ (D100 diode V951. Reference for the “EGOLD-PLL” is the base station frequency. To compensate a temperature caused frequency drift, the temperature-depending resistor R959 is placed near the VCXO to measure the temperature. The measurement result TVCXO is reported to the EGOLD+

The required voltage VCC_SYN is provided by the ASCI D2820

(Analog Interface P3) via R138 as the signal TENV.

(functional T3)).

(functional U5)) PLL via the capacity

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Circuit diagram

from EGOLD

to Bright IC

to Bluetooth IC

4.2.2 Synthesizer: LO1

The first local oscillator is needed to generate frequencies which enables the transceiver IC to demodulate the receiver signal 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 (Bright -IC)). This control voltage is a result of the comparison of the divided LO1 and the 26MHz reference Signal. The division ratio of the dividers is programmed by the EGOLD+, according to the network channel requirements.

The first local oscillator (LO1) consists of the PLL inside the Bright (D800), an external loop filter and the VCO (Z850) module. LO1 generates frequencies from: 3700-3980 MHz for EGSM900 3580-3760 MHz for GSM1800 3860-3980 MHz for GSM1900

Formula for TX frequencies:

EGSM900 Channel: 975...1023/76...92 = (Ch. freq. + 82MHz) * 4 Channel: 0…75/93…124 = (Ch. freq. + 80MHz) * 4

GSM1800 Channel: 512...661 = (Ch. freq. + 80MHz) * 2 Channel: 662…885 = (Ch. freq. + 82MHz) * 2

GSM1900 Channel: 512...810 = (Ch. freq. + 80MHz) * 2

26MHz

Formula for RX frequencies:

EGSM900 Channel freq. * 4

GSM1800 Channel freq. * 2

GSM1900 Channel freq. * 2

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The VCO (Z850) is switched on by the EGOLD+ signal PLLON (TDMA-Timer F16) via V850 and therefore supplied with VCC2_8. The VCO guarantees by using the control voltage at pin5 a coverage of the EGSM900, GSM1800 and GSM1900 frequency band and frequency stability. The Bright gained control voltage passes on the way to the VCO a discreet loop filter (typical value from 0,5 – 2,1V). The channel programming of the PLL happens via the EGOLD+ signals RFDATA; RFCLK; RFSTR.

(RF Control J15, J16, J17). If the Bright IC gets via the same signals a GSM1800 channel information, the

VCO is switched to this frequency by Pin 42 Bright (Pin 3 VCO). For GSM900 - RX = “low signal” for channel 975-49

= “high signal” for channel 50-124

- TX = “high signal” for all channels For GSM1800 - RX = “low signal” for all channels

- TX = “low signal” for all channels

For GSM1900 - RX = “high signal” for all channels

- TX = “high signal” for all channels

The VCO output signal passes the “Balun” transformer (Z851) with insertion losses of ~ 2dB to arrive at the Bright IC.

The required voltage VCC8_8 is provided by the ASIC D2820 Circuit diagram

from EGOLD+

Balun transformer

Bright 4

26MHz

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VCO

TOP View

4.2.3 Synthesizer: LO2

The second local oscillator is required for transmitter operations only. It consists of a PLL and a VCO which are integrated inside the Bright 4, and an external second order loopfilter (R831; C830; C832). Before the VCO generated 640 or 656MHz signal arrives at the modulator, it is divided by 8. So the resulting frequency after the IQ modulator is 80/82MHz (depending on channel and band). Programming of the LO2 PLL is done in the same way as described at the LO1. The tree-wire-bus (EGOLD+ signals RFDATA; RFCLK; RFSTR. stability, the 640MHz VCO signal is compared by the phase detector of the 2 reference signal. The resulting control signal passes the external loop filter and is used to control the 640/656MHz VCO.

The required voltage VCC_SYN is provided by the ASIC D2820

Circuit diagram

(RF Control J15, J16, J17) is used. To ensure the frequency

PLL with the 26MHz

Loop-filter LO2

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4.2.4 Synthesizer: PLL

PLL as a part of the BRIGHT IC Blockdiagram

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4.3 Antenna switch (electrical/mechanical)

Internal/External <> EGSM900/GSM1800/GSM1900 <> Receiver/Transmitter

The SX1 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. To activate the correct settings of this diplexer, the EGOLD+ signals RF_SW and

TXON_GSM are required

Circuit diagrams a) Internal/External antenna switch

to / from

lexe

b) The electrical antenna switch

External Antenna

Internal Antenna

to Antenna

Bright

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Z880

Top View

4.4 Receiver

4.4.1 Receiver: EGSM900/GSM1800/GSM1900 –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+:

Filter

LNA

Z880 Bright

Filter: The EGSM900, GSM1800 and GSM 1900 filters are located inside the frontend module. The Filter are centred to a frequency of 942,5MHz for EGSM900, 1847,5MHz for GSM1800 and 1960MHZ for GSM1900. The symmetrical filter output is matched via LC-Combinations to the LNA input of the BRIGHT (D800)

LNA: The 2 LNA´s (EGSM900/GSM1800/GSM1900) are located inside the BRIGHT and are able to perform an amplification of ~ 20dB. The LNA can be switched in HIGH (On) and LOW (Off) mode and is controlled by the Bright depending on EGOLD+ information.

Demodulator: The Bright IC performs a direct demodulation of the received GSM signals. To do so the LO1 is required. The channel depending LO1 frequencies for 1800MHz/1900MHz bands are divided by 2 and by 4 for 900MHz band, Bright internally.

PGC: After demodulation the “I” and “Q” signals are amplified by the PGC-Amplifier the “I” and the “Q” path are amplified independently from each other. The performance of this PGC is 80dB (-26 up to 54dB), switchable in steps of 2dB. The control is realised through the EGOLD+ signals (RFDATA;

RFCLK; RFSTR.

the double using of RX and TX lines), the signals are ready for further processing through the EGAIM (part of the EGOLD+) The post-switched logic measures the level of the demodulated baseband signal an regulates the level to a defined value by varying the PGA-Amplification and switching the appropriate LNA gains

The required voltage VCC_SYN is provided by the ASIC D2820

(RF Control J15, J16, J17). After passing a Bright internal switch (necessary because of

Demodulator

PGC

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