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PDF MT6223 Fiche technique - MediaTek

Numéro de référence MT6223
Description GSM/GPRS Baseband Processor
Fabricant MediaTek 
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MT6223 Datasheet, Description
MT6223 GSM/GPRS
Baseband Processor
Data Sheet
Revision 2.10
Jan 29, 2008
MT6223 Fiche technique
mode 1 of GPIO52
1.16 Jul 5th, 2007 Add driving strength to BPI_BUS3 and slow-down control for wavetable, corresponding to E5
1.17 Jul 21th, 2007 Modify the BGA diagram
1.18 Aug 02th, Remove incorrect description about USB and other project name. Change the VRTC LDO
2007
spec.
1.19 Aug 22th, Remove GPIO52 mode 0 from ECS3_B. Add digital pin electrical characteristics section
2007
1.20 Aug 24th, Replace MIRQ at EINT2 (GPIO42)
2007
2.00 Aug 30th, Revised CC mode spec.
2007
2.01 Oct 4th, 2007 Correct GPIO50 definition and new electrical characteristics
2.02 Oct 9th, 2007 Revised LCD datasheet
2.03 Oct 11th, 2007 Add RGU, Clock chapters
2.04 Oct 19th, 2007 Resume GPI52: GPIO52 allows input mode only
2.05 Oct 31th, 2007 Remove serial LCD in GPIO chapter
2.06 Nov 20th, EMI_ADMUX defined at GPIO20, rather than GPIO4
2007
2.07 Nov 30th, Remove EINT7 from GPIO list of LCD_CS1_B. Remove EINT7 source description from
2007
CIRQ
2.08 Dec 17th, Add manual for CIF. Remove MT6227 description in EMI chapter
2007
2.09 Jan 18th, 2008 Description of PMIC_CON1
2.10 Jan 29th, 2008 Application notes for camera back-end

3 Page

MT6223 pdf
1. System Overview
MT6223 is an entry level chipset solution with class 12
GPRS/GSM modem. It integrates only only analog
baseband but also power management blocks into one chip
and can greatly reduce the component count and make
smaller PCB size. Besides, MT6223 is capable of SAIC
(Single Antenna Interference Cancellation) and AMR
speech. Based on 32 bit ARM7EJ-STM RISC processor,
MT6223 provides an unprecedented platform for high
quality modem performance.
Typical application diagram is shown in Figure 1.
Platform
MT6223 runs the ARM7EJ-STM RISC processor at up to
52Mhz, thus providing best trade-off between system
performance and power consumption.
For large amount of data transfer, high performance DMA
(Direct Memory Access) with hardware flow control is
implemented, which greatly enhances the data movement
speed while reducing MCU processing load.
Targeted as a modem-centric platform for mobile
applications, MT6223 also provides hardware security
digital rights management for copyright protection. For
further safeguarding, and to protect manufacturer’s
development investment, hardware flash content protection
is also provided to prevent unauthorized porting of software
load.
Memory
MT6223 supports up to 4 external state-of-the-art devices
through its 8/16-bit host interface. Devices such as
burst/page mode Flash, page mode SRAM, and Pseudo
SRAM are supported including ADMUX type devices. For
greatest compatibility, the memory interface can also be
used to connect to legacy devices such as Color/Parallel
LCD, and multi-media companion chip are all supported
through this interface. To minimize power consumption and
ensure low noise, this interface is designed for flexible I/O
voltage and allows lowering of supply voltage down to 1.8V.
The driving strength is configurable for signal integrity
adjustment. The data bus also employs retention technology
to prevent the bus from floating during turn over.
Multi-media
MT6223 utilize high resolution audio DAC, digital audio,
and audio synthesis technology to provide superior audio
features., e.g. MP3 ring tone. For MT6223C, MP3 player is
also supported.
Connectivity, and Storage
MT6223 supports UART as well as Bluetooth interface.
Also, necessary peripheral blocks are embedded for a voice
centric phone: Keypad Scanner with the capability to detect
multiple key presses, SIM Controller, Alerter, Real Time
Clock, PWM, Serial LCD Controller, and General Purpose
Programmable I/Os.
Furthermore, to provide more configuration and bandwidth
for display, an additional 9-bit parallel interface is
incorporated.
For MT6223C, memory card control is provided through
LCD interface, including SD and mini SD, etc. Therefore
high quality MP3 playback of 48kHz sampling with
320kbps format can be supported
Audio
Using a highly integrated mixed-signal Audio Front-End,
architecture of MT6223 allows for easy audio interfacing
with direct connection to the audio transducers. The audio
interface integrates D/A and A/D Converters for Voice band,
as well as high resolution Stereo D/A Converters for Audio
band. In addition, MT6223 also provides Stereo Input and
Analog Mux. MT6223 also supports AMR codec to
adaptively optimize speech and audio quality.
Radio
MT6223 integrates a mixed-signal Baseband front-end in
order to provide a well-organized radio interface with
flexibility for efficient customization. It contains gain and
offset calibration mechanisms, and filters with
programmable coefficients for comprehensive compatibility
control on RF modules. This approach also allows the usage
of a high resolution D/A Converter for controlling VCXO
or crystal, thus reducing the need for expensive TCVCXO.
MT6223 achieve great MODEM performance by utilizing
14-bit high resolution A/D Converter in the RF downlink
path. Furthermore, to reduce the need for extra external
current-driving component, the driving strength of some
BPI outputs is designed to be configurable.
Debug Function
The JTAG interface enables in-circuit debugging of
software program with the ARM7EJ-S core. With this
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