Nokia Customer Care NEM-4 Series Cellular Phones 7 - Baseband Issue 2 09/2004 Copyright © 2004 Nokia Corporation.
NEM-4 7 - Baseband Company Confidential Nokia Customer Care Table of Contents Page No List of Abbreviations ..................................................................................................... 4 NEM-4 Block Diagram .................................................................................................. 6 Baseband Technical Summary....................................................................................... 6 Functional Description......................................
Company Confidential Nokia Customer Care NEM-4 7 - Baseband Temperature conditions .............................................................................................18 Humidity and water resistance ...................................................................................18 Issue 2 09/2004 Copyright © 2004 Nokia Corporation.
NEM-4 7 - Baseband Company Confidential Nokia Customer Care List of Abbreviations ADSP Application DSP, TMS320DA250 AIC Audio Codec for Amadeus, manufactured by TI ASIC Application Specific Integrated Circuit BB Baseband BLUETOOTH, BT Bluetooth BSI Battery Size Indicator CBus Control Bus connecting UPP_WD2 with UEM CPU Central Processing Unit DBUS Data Bus DSP Digital Signal Processor EGSM Extended – GSM GPRS General Packet Radio Service GSM Group Special Mobile/Global system mobi
Company Confidential Nokia Customer Care RF Radio Frequency RFBUS Control Bus For RF SDRAM Synchronous Dynamic Random Access Memory SIM Subscriber Identity Module UI User Interface UEM Universal Energy Management USB Universal Serial Bus VCXO Voltage Controlled Crystal Oscillator VGA Video Graphics Array Issue 2 09/2004 Copyright © 2004 Nokia Corporation.
NEM-4 7 - Baseband Company Confidential Nokia Customer Care NEM-4 Block Diagram NEM-4 product consists of RF, BB, Bluetooth and audio blocks. External interfaces of NEM-4 consist of Bluetooth, stereo and mono headsets, charger as well as the Universal Serial Bus (USB).
Company Confidential Nokia Customer Care NEM-4 7 - Baseband The audio part includes ADSP for audio processing and controlling, AIC audio codec and Nectar FM radio chip. There are two audio transducers (Earpiece 8mm and IHF speaker 16mm) and external interface for stereo and mono headsets. The IHF speaker produces the ring tone. The IHF speaker is driven by a discrete audio amplifier. Functional Description BB description The BB core is based on UPP_WD2 CPU, which is a PDA version of the DCT4 UPP ASIC.
NEM-4 7 - Baseband Company Confidential Nokia Customer Care VMEMA respectively. Energy management The master of EM control is UEM and with SW this has the main control of the system voltages and operating modes. Modes of operation NEM-4 employs several hardware & SW controlled operation modes. Main modes are described below. • NO_SUPPLY mode means that the main battery is not present or its voltage is too low (below UEM master reset threshold) and back-up battery voltage is too low.
Company Confidential NEM-4 7 - Baseband Nokia Customer Care The master reset threshold controls the internal reset of UEM. If battery voltage is above VMSTR, UEM’s charging control logic is alive. Also, RTC is active and supplied from the main battery. Above VMSTR UEM allows the system to be powered on although this may not succeed due to voltage drops during start-up. SW can also consider battery voltage too low for operation and power down the system.
NEM-4 7 - Baseband Company Confidential Nokia Customer Care independently. The clock for MCU can be up to 104 MHz and 117 MHz is maximum clock Frequency for the DSP. These clock signals are used either directly (SDRAM IF) or divided down for the interfaces (e.g. flash IF). Power distribution, control and reset All power (except backup battery power) is drawn from BL5-C Li-Ion battery located in the B cover.
Company Confidential Nokia Customer Care NEM-4 7 - Baseband Uncontrolled powering off This happens when the battery is suddenly removed. UEM’s state machine notices battery removal after battery voltage has been below VCOFF- for 5 us and enters PWR_OFF mode. PURX is set low and all UEM’s regulators are disabled. Watchdogs There are three watchdogs in UEM. The first one is for controlling system power-on and power-down sequences.
NEM-4 7 - Baseband Company Confidential Nokia Customer Care the measurements. The Converter is used for following purposes.
Company Confidential Nokia Customer Care NEM-4 7 - Baseband The clock supplied to the card is 3.25 MHz. The data baudrate is SIM card clock frequency divided by 372 (by default), 64, 32 or 16. MMC interface MMC is interfaced with UPP_WD2 and ADSP. Both UPP_WD2 and ADSP have MMC interfacing functionality integrated to the chip. The MMC interface comprises of three lines: clock, data and command and runs at 8.66MHz.
NEM-4 7 - Baseband Company Confidential Nokia Customer Care back and recording the audio data stream as well as equalizing the playback from MP3/ AAC audio data and FM radio. This part generates the ringing tones and controls the ringing tone power amplifier. Audio routing and conditioning The analog audio sources, FM radio and line in, are mixed and level conditioned in a passive stereo mixer and then fed through the Audio Codec RLINEIN and LLINEIN.
Company Confidential Nokia Customer Care NEM-4 7 - Baseband audio PA (Boomer) will be activated if the IHF loudspeaker is used for IHF mode. Standard ringing tones / alarm tones The routing for playing ringing or alarm tones is the same like in GSM handsfree mode. MP3/AAC/MIDI ringing tones If MP3/AAC files are used as ringingtone, the routing corresponds to the routing in MP3/ AAC playback mode.
NEM-4 7 - Baseband Company Confidential Nokia Customer Care also used as Integrated Handsfree (IHF) Speaker and as speaker for media playbac (MP3, AAC, FM Radio). Speaker capsule is embedded into the chassis. Spring contacts are used to connect the speaker contacts to the engine PWB. Headset The headset is of passive type with mono and stereo connectors as well as integrated microphone with answer key. The type name is HDD-2.
Company Confidential NEM-4 7 - Baseband Nokia Customer Care Testing interfaces Testing interface electrical specifications Pin Name Dir Parameter Min Typ Max Unit 1 MBUS <-> Vol 0 0.2 0.3*VFlash1 V Vil (From Prommer) 0 0.2 0.3*VFlash1 V Voh 0.7*VFlash1 2.7 0.7*VFlash1 V Vih(From Prommer) 0.7*VFlash1 2.7 VFlash1 V Vol 0 2.7 0.3*VFlash1 V Voh 0.7*VFlash1 2.7 VFlash1 V Vil (From Prommer) 0 2.7 0.3*VFlash1 V Vih(FromPrommer) 1.89 2.7 VFlash1 V Abs. Max.
NEM-4 7 - Baseband Company Confidential Nokia Customer Care Extreme voltages Lithium-Ion battery BL-5C (1 cell): Nominal voltage is 3.7V Lower extreme voltage is 2.8V (cut off voltage) Higher extreme voltage is 4.2V (charging high limit voltage) Temperature conditions Specifications are met within range of –10C to +55C ambient temperature. Reduced operation between [-30] and [+60]. Storage temperature range is of –40C to +85C. Humidity and water resistance Relative humidity range is 5 … 95%.
