－》Drivers
MCU外围设备的驱动，如下：
SIM: Subscriber Identity Module
UART: Universal Asynchronous Receiver/Transmitter
SPI: Serial Port Interface
LCD: Liquid Crystal Display
GPIO: General Purpose Input/Output
GPT: General Purpose Timer
RTC: Real Time Clock
WDT: Watch Dog Timer
PWM: Pulse Width Modulation
Alerter
Keypad
PMIC: Power Management IC
BMT: Battery Charging Management task
AUX task: Auxiliary task
ADC Sched.: Analog to Digital Converter Scheduler
USB task: The USB 1.1 protocol and driver
IrDA task: The IrDA and driver
Camera: Camera driver for integrating with 3rd party camera module
MSDC: Memory card driver, supporting SD, MMC cards and Memory Stick
JPEG Decoder: Software for controlling hardware JPEG decoder
－》L2/L3/L4 Protocol Stack
这部分包含大量的GSM/GPRS需求以及提供一个优秀的GSM/GPRS平台给应用程序。本地MMI和远程PC通过AT命令可以方便的使用该软件平台。详细的结构如下：
RMI: 远程MMI，比如PC端，可以使用AT命令通过串口与协议栈进行通讯。
FMI: Feature rich MMI, described in the above section. This is the production co-worked with Pixtel.
L4: Layer 4. L4 is a task through which FMI and/or RMI communicate with PS. L4 task includes several sub-modules.
ATCI: AT command interpreter. Interprets the AT commands from PC side and commands the L4C to do the relative actions.
L4A: L4 adaptation layer for FMI. The SAP between FMI and L4A is primitive base.
L4C: L4 control entity. Handles all applications request and response.
UEM: User equipments adaptation. Adaptation for drivers, like Keypad, LED, GPIO, Audio…etc.
PHB: Phone book management. Handles the phone books related processing, like: sorting…etc.
SMU: SIM management unit. Handle the security management, and STK.
CSM: Circuit switching protocol stack management.
RAC: Registration access control.
SMSAL: Short message service application layer.
TCM: Terminal context management.
NVRAM: Non-volatile RAM. This is adaptation layer to flash memory.
SIM: Subscriber identity module. Handle SIM behavior as ETSI 11.11 description.
DATA: Circuit switched data service. Data task includes several sub-modules.
FAX: Group 3 Facsimile.
TDT: Transparent circuit switching data.
L2R: Layer 2 relay protocol for non-transparent circuit switching data.
RLP: Radio link protocol for non-transparent circuit switching data.
CC: Circuit-switched call control.
SS: Supplementary service.
SMS: Short message service.
SM: Session management.
MM/GMM: Mobility management/GPRS mobility management.
SNDCP: Subnetwork dependent convergence protocol.
LLC: Logical link control.
RR: Radio resource management. RR task includes several sub-modules.
RRM: Handles cell selection and PLMN selection.
RMPC: Handles the procedures in Idle/Dedicated state including the surrounding cell scheme and measurement reporting.
LAPDM: Handles the procedure defined in GSM layer 2.
RLC: Radio link control protocol.
MAC: Medium access control protocol.
MPAL: Adaptation layer for RR and L1A.
PPP: Point to Point protocol layer. This is client PPP layer.
