FLY SP-770, As Manual

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2.1.4 Connectivity and Storage
In order to take advantage of its incredible multimedia strengths, MT6228 incorporates
myriads of advanced connectivity and storage options for data storage and
communication. MT6228 supports UART, Fast IrDA. USB 1.1 Full speed OTG, SDIO,
Bluetooth and WIFI Interface, and MMC/SD/MS/MS Pro storage systems, All these
interfaces provide MT6228 users with the highest degree of flexibility in implementing
solutions suitable for the targeted application. To achieve a complete user interface,
MT6228 also brings together all the necessary peripheral blocks for multi-media
GSS/GPRS phone. The peripheral blocks includes the 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 multi-media products,
and additional 18-bit parallel interface is incorporated, This interface enables
connection to LCD panels as well as connection to NAND flash devices for additional
multi-media data storage.
2.1.5 Audio
Using a highly integrated mixed-signal Audio Front-End, the MT6228 architecture
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, MT6228 also provides
Stereo Input and Analog Mux.
MT6228 supports AMR codec to adaptively optimize speech and audio quality.
Moreover, HE-AAC codec is implemented to deliver CD-quality audio at low bit rates.
On the whole, MT6228's audio features provide a right solution for multi-media
applications.
2.1.6 Radio
MT6228 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. MT6228 achieves 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
2.1.7 Debug Function
The JTAC interface enables in-circuit debugging of software program with the
ARM7EJ-S core. With this standardized debugging interface, the MT6228 provides
developers with a wide set to options in choosing ARM development kits from different
third party vendors.