Nokia 9210i Servicehandbuch

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PAMS
Technical Documentation
RAE-5 
3. RF+System Module KL8 
Page 3 – 10
Issue 1 04/02
Technical Summary of System Part
The RAE-5 system hardware is based on a special version of the MAD2 ASIC
called MADLinda. MADLinda carries out all the signal processing and operation
controlling tasks of the phone as well as all PDA tasks. To be able to run simul-
taneously both CMT and PDA applications, MADLinda (ROM1) has a 52MHz
ARM9 core.
MADLinda’s main blocks include:  ARM925 MPU Subsystem, Traffic Controller
(TC), LEAD2 DSP megamodule (LMM), GSM System Logic and PDA peripher-
als. ARM925 MPU Subsystem includes ARM9TDMI core, data and instruction
caches, data and instruction memory management units (MMU) and write and
address buffers. Traffic Controller includes primary DMA controller, LCD con-
troller and Flash and SDRAM memory interfaces. The System Logic of MAD2 is
able to support high speed data features (HSCSD). PDA peripherals include
interfaces for Serial Flash, MMC, IrDA, serial port, IOs and PWMs.
In addition of the MADLinda IC the system hardware includes memories, in-
frared transceiver, COBBA_GJP, CCONT and CHAPS ASICs, audio amplifier
and power regulators. CSP packages are used for all ASICs. System HW also
has connectors for Memory Card (MMC) and SIM card, UI connector and pads
for system connector’s spring contacts.
Two 8Mb XIP Flash devices are used for program code storage.
A 16Mbyte DiscOnChip (DOC) Flash memory is used with the flash file system,
having user data and part of the applications.
Applications in DOC memory are loaded to SDRAM for program execution.
The main battery voltage range in RAE-5 is 3.0V to 4.2V. Battery charging is
controlled in SW using CCONT and CHAPS ASICs. RAE-5 can also supply 3
V(max 100mA) accessory voltage out from system connector.
The system electronics run from a 2.8V power rail. 1.8V is used as core voltage
inside MADLinda and as I/O voltage for XIP Flash memory interface.
Power supplying of the KL8 module, both system HW and RF, and also 2.8V
supplying for the UI module is carried out in system HW. A linear regulator is
used to generate 2.8V VBB voltage and a DC/DC converter is used to generate
the 1.8V Vcore voltage. Accessory voltage and MMC supply are generated with
separate  3V linear regulators. Other supplies are generated using the CCONT
power ASIC (4.7V needed in DCT4 RF is generated in RF side). CCONT gen-
erates also the main reset for the system.
Both 3V and 5V Plug–in SIM–cards are supported. SIM is interfaced through
CCONT, which does signal level shifting and generates correct supply voltage
for SIM.
A real time clock function is integrated into CCONT, which utilizes the same
32kHz clock supply as the sleep clock. A rechargeable backup battery provides
backup power to run the RTC when the main battery is removed. The backup
time is about 10 days.  Note also the information in section 8 chapter 2.6.
The interface from the system part and the RF and audio sections is handled
by a specific ASIC COBBA_GJP. This ASIC provides A/D and D/A conversion