Nokia 7710, rm-12 System Module
Nokia Customer Care
RM-12 Series Transceivers
7 - System Module
Issue 1 11/2004 ©Nokia Corporation
RM-12
System Module CCS Technical Documentation
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Page 2 ©Nokia Corporation Issue 1 11/2004
RM-12
CCS Technical Documentation System Module
Table of Contents
Page No
ABBREVIATIONS ....................................................................................................... 3
1EL System module....................................................................................................... 5
Baseband top-level description...................................................................................... 5
APE BB description .....................................................................................................5
APE Memories .............................................................................................................7
CMT BB description ....................................................................................................7
Memories on CMT side ...............................................................................................8
Baseband clocking and reset.......................................................................................... 8
APE clocking and reset ................................................................................................8
CMT Clocking Scheme ...............................................................................................9
Back-up battery and real time clock ............................................................................9
Baseband energy management....................................................................................... 9
CMT energy management ...........................................................................................9
APE energy management ............................................................................................9
Modes of operation ....................................................................................................10
Power distribution ......................................................................................................11
Current gauge .............................................................................................................12
APE discrete regulators .............................................................................................12
Audio............................................................................................................................ 14
Audio control signals .................................................................................................14
Audio modes ..............................................................................................................15
HP call..................................................................................................................... 15
IHF call.................................................................................................................... 15
Accessory call ......................................................................................................... 15
APE audio ............................................................................................................... 15
Internal interfaces......................................................................................................... 17
XBUS .........................................................................................................................17
XABUS ......................................................................................................................17
External SERIAL interfaces......................................................................................... 17
MMC INTERFACE ...................................................................................................17
USB INTERFACE .....................................................................................................17
SIM interface................................................................................................................ 17
Display interface .......................................................................................................... 17
Camera interface.......................................................................................................... 18
Touch screen interface ................................................................................................. 18
Keyboard interface....................................................................................................... 18
Bluetooth...................................................................................................................... 19
Flashing Interfaces....................................................................................................... 19
APE Flashing .............................................................................................................19
CMT Flashing ............................................................................................................19
Settings Database......................................................................................................... 19
Issue 1 11/2004 ©Nokia Corporation Page 3
RM-12
System Module CCS Technical Documentation
ABBREVIATIONS
Table 1:
AAC Advanced Audio Coding
ACI Accessory Control Interface
APE Application processor engine
ASIC Application specific integrated circuit
ASIP Application specific integrated passive
BB Baseband
CMT Cellular mobile telephone
DAC Digital to analogue converter
DPLL Digital phase-locked loop
DSP Digital signal processor
EDGE Enhanced data rates for GSM evolution
EM Energy management
I2C
LCD Liquid crystal display
MDOC Disc-On-Chip
MMC Multi Media card
MP3 MPEG1 layer 3 audio compression format
MPU Microprocessor unit
NAND Sequential Access Flash Memory
NOR Random Access Flash Memory
OMAP1510 TI’s Open Multimedia Application Processor
PA Power amplifier
PURX Power-up reset signal
PWL Pseudo-noise pulse width light modulator
PWT Pulse width tone
Inter-integrated circuit control bus
RAM Random access memory
SRAM Static random access memory
SDRAM Synchronous dynamic random access memory
RF Radio frequency
ROM Read only memory
SD Secure Digital
Page 4 ©Nokia Corporation Issue 1 11/2004
RM-12
CCS Technical Documentation System Module
Table 1:
SIM Subscriber identity module
SMPS Switched mode power supply
SPI Serial protocol interface
TC Traffic controller
UART Universal asynchronous receiver/transmitter
UEM Universal energy management
UPP Universal phone processor
USB Universal serial bus
XABUS Audio data transfer channel between the CMT and APE engines
XBUS Main communication channel between the CMT and APE engines
Issue 1 11/2004 ©Nokia Corporation Page 5
RM-12
System Module CCS Technical Documentation
1EL System module
1EL System module is the engine board of the RM-12 phone. It includes the baseband and
RF functions of the phone.
Baseband top-level description
Product RM-12 is a hand portable EGSM 900/ GSM 1800/1900MHz product for the mediaphone segment.
The RM-12 baseband consists of a dual-processor engine named as Cellular Mobile Telephone (CMT) and Application Processor Engine (APE) sides. The top-level block diagram is
presented below.
Figure 1: Baseband Block Diagram
APE BB description
APE (Application Processor Engine) in RM-12 includes not only the processor itself but
also the peripherals around it, clocking, resetting and power management for these
parts.
APE is based around OMAP1510 (Open Multimedia Application Platform) processor from
Texas Instruments. Peripheral attached to OMAP1510 include Audio DAC, Camera, Bluetooth, PDA display, touchscreen controller, memory card and external SDRAM and Flash
Page 6 ©Nokia Corporation Issue 1 11/2004
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