Ficha Tecnologica Celular MP201

GSM Model: MP201

A300 Service Manual & Technical Report

Section A. General Specifications

Features (1)Dual SIM with A-TV;

(2)Ultra low cost phone

(3)Dual standby

English/Russian/Arabic/French/Turkish/Spanish/Portuguese/Italian.etc

Basic Info

Production time 2009.1

Platform MT6225

Band GSM850/900/1800/1900MHz

Color TBD

Dimension 45*105*13.35mm

Weight About 80g

Talk time 240 mins

Standby time 130 hrs

Lithium-ion Battery 700mAh

Screen 2.0" 262K Colors TFT 176*220

Basic Function

Message SMS/EMS

Phonebook 500

Call record 40

Current Language English/Russian/Arabic/French/Turkish/Spanish/Portuguese/Italian.etc/Hindi.etc

Memory

Nor/SRAM 64MB+32MB

External memory T-Flash

Multimedia

Video MP4 player Yes

Audio MP3 player Yes

Reording Yes

Ringtone 64 chord

TV Yes (Analog)

FM Yes

Camera(Option) Pixel real 0.3 mega pixel/CMOS

Video recorder Yes

Entertainment Power on/off animation Yes

Wallpaper(Sceensaver) Yes

Games Yes

Network&data trnasfer

WAP No

Bluetooth NO

USB Charger Yes

Other function

Calendar Yes Alarm Yes

Handfree Yes Calculator Yes

Vibration/Mute Yes Unit conversion Yes

Flashlight 　 Yes 　 　

World Time Yes Memo Yes

Section B. Electrical Specifications

.1 General

Mobile Transmit Frequency 824 MHz ~ 849 MHz/880 MHz ~ 915 MHz

1710MHz ~ 1785MHz/1850MHz ~ 1910MHz

Mobile Receive Frequency 869 MHz ~ 894 MHz /925 MHz ~ 960 MHz

1805MHz ~ 1880MHz/1930 MHz ~ 1990MHz

The Number of Time Slot 8

The Number of Channels 124/174/375/299

Channel Spacing 200 kHz

Power Supply Rechargeable Li-Ion Battery 3.7V/680mAh

Operating Temperature -10℃ ∼ +55℃

Dimension 76(H) ×40(W) ×23.5(D) mm (SLIM)

Weight 76 g

2 Transmitter

Maximum Output Power 33±2/33±2 / 30±2 / 30±2 dBm

Frequency Error ±90Hz/±90Hz/±180Hz/±180Hz

Phase Error RMS < 5°, PEAK < 20°

Minimum Output Power 5±5 / 0±5 dBm

Power Control 5~19(2 dB Step)/0~15(2 dB Step)

Output RF Spectrum TS 100 910V6.2.0

Switching Transient TS 100 910V6.2.0

Intermodulation attenuation

Conducted Spurious Emissions Idle Mode

-57dBm 9KHz~880M/915MHz~1GHz

-59dBm 880MHz~915MHz

-53dBm 1.7~1.785GHz

-47dBm 1~1.715GHz/1.785GHz~12.75GHz

Allocated Channel

-36dBm 9KHz~ 1GHz

-30dBm 1GHz~ 12.75GHz

3 Receiver

Reference Sensitivity

For GSM850 small MS :-102dBm

For GSM900 small MS :-102dBm

For DCS1800 class3 MS : -102dBm

For PCS1800 class3 MS : -102dBm

For Adjacent interference

For Adjacent(200KHz) interference

For Adjacent(400KHz) interference

For Adjacent(600KHz) interference C/Ic 9 dB

C/Ia1 -9 dB

C/Ia2 -41 dB

C/Ia3 -49 dB

Section C. Theory of Operation

1.1 Logic Section

1.1.1 DC Distribution and Regulation Part

Applying battery voltage and pressing “END” key on the key pad short-circuits “Ground” and “_

Power　ON”. MT6253(U1) control that power manage regarding power on/off in handset

Pressing POWERKEY on the key pad is active on the handset.

This will turn on all the LDOs, when POWERKEY is held low. The power of RF Tx power amplifier is supplied directly by the battery.

1.1.2 Logic part

1.1.2.1 Summary

The logic part consists of MT6253 ARM7 microprocessor-combined GSM-ASIC, COMBO　(flash ROM & SRAM). MT6253 is GSM-ASIC chipset implemented for GSM terminal’s system control and baseband digital signal processing.

Major parts used in the logic part are as follows:

1) MT6253 : U1, [ARM7 Processor Core + GSM Signal Processing] ASIC

2 COMBO MEMORY(Flash ROM : U401, 128Mbit Flash Memory + 32Mbit SRAM )

1.1.2.2 Baseband Digital Signal Processing

MT6253 is a GSM core device containing ARM7 CPU core. MT6253 is 260 pin aQFN package, consisting of terminal chips. The function and characteristics of clock are as follows:

1) Complete single chip GSM Processor

2) Channel codec sub-system

• Channel coder and decoder

• Interleaver and Deinterleaver

• Encryption and Decryption

3) Control Processor Subsystem including

• Parallel and serial Display interface

• Keypad Interface

• SIM Interface

• Control of RADIO subsystem

• Real Time Clock with Alarm

☞ Configuration by Function of MT6253

1 Microprocessor Core

MT6253 has a built-in ARM7 microprocessor core, including microprocessor interrupt controller, timer/counter, and DMA controller. And besides, 32bit data path is included, and up to 8Mbyte addressing is enabled and can be extended up to 16Mbyte. Although external clock should be provided to operate the microprocessor, this core uses 26MHz XO to provide clock.

2 Input Clock

1) Main Clock(26 MHz):

This is the clock needed for the microprocessor built in MT6253 to operate.

2) XO(26 MHz) , 32.768KHz Clock:

This is the

...