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
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.
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 neededto
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
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:
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
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
The K45 mobile has two antenna switches.
a) The mechanical antenna switch for the differentiation
between the internal and external antenna
to / from
diplexer
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
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
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
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
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.
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_µP 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+
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 (22kΩ 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.
For temperature detection, a NTC resistor (22kΩ 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
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.
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 Σ∆ converter of the EGAIM of the RX-I base band branch is used.
This Σ∆ 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.
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.
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
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)
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+.
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
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.
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.
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
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 toearpiece 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
The Light is switched via an analogue switch inside the ASIC (D361). It is controlled
from theEGOLD+ (TDMA-TIMER,L15)with the signalLIGHT_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
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.
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 )
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
8 ZUB_DATA I/O Data line for accessory bus.
9 GND_MIC For external microphone
10 MICP2 I External microphone
11 EPP2 O
12 EPN2 O For external loudspeaker
Use as DTC In data operation
Use as CTS in data operation
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).
Name IN/OUT Notes
Pin
1 GND
2 Akku_Temp O Temperature control of the battery pack.
3 Battt + I/O Battery voltage