LG KM330 Service Manual page 20

Connectivity, and Storage
In order to take advantage of its incredible multimedia strengths, MT6229 incorporates
myriads of advanced connectivity and storage options for data storage and communication.
MT6229 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 MT6229
users with the highest degree of flexibility in implementing solutions suitable for the targeted
application. To achieve a complete user interface, MT6229 also brings together all the
necessary peripheral blocks for a multi-media 2.75G 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, an
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.
Audio
Using a highly integrated mixed-signal Audio Front-End, the MT6229 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, MT6229 also provides Stereo Input and Analog Mux.
MT6229 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,
MT6229's audio features provide a rich solution for multi-media applications.
Radio
MT6229 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.
MT6229 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.
Debug Function
The JTAG interface enables in-circuit debugging of software program with the ARM7EJ-S
core. With this standardized debugging interface, MT6229 provides developers with a wide
set of options in choosingARM development kits from different third party vendors. Power
Management MT6229 offers various low-power features to help reduce system power
consumption. These features include Pause Mode of 32KHz clocking at Standby State, Power
Down Mode for individual peripherals, and Processor Sleep Mode. In addition, MT6229 is also
fabricated in advanced low leakage CMOS process, hence providing an overall ultra low
leakage solution.
Package
The MT6229 device is offered in a 13mm×13mm, 314-ball, 0.65 mm pitch, TFBGA
package.
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