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 simultaneously 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 peripherals. 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 controller 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, lOs and PWMs.
In addition of the MADLinda IC the system hardware includes memories, infrared 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 generates 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
Technical Documentation 3. RF+System Module KL8
of the in-phase and quadrature receive and transmit signal paths and also A/D and D/A conversions of received and transmitted audio signals. Data transmission between the COBBA_GJP and the MADLinda is implemented using serial connections. Digital speech processing is executed by the MADLinda ASIC.
External audio is connected to RAE-5 through system connector's XMIC and XEAR lines.
Serial connection channels in RAE-5 include IrDA, MBUS, and serial port. MBUS and serial port have logic level signals which are connected through system connector. IR transceiver is next to the system connector at the bottom end of RAE-5 device.
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