RM-84/99 System Module Nokia Customer Care (This page left intentionally blank.) Page 1–2 Company Confidential Copyright ©2005 Nokia. All Rights Reserved.
RM-84/99 System Module Nokia Customer Care Table of Contents Baseband description....................................................................................................................................................................1–7 System module block diagram.............................................................................................................................................1–7 Baseband functional description..........................................................
RM-84/99 System Module Nokia Customer Care Charger connector and charging interface connections & electrical characteristics..................................1–40 Battery connector and interface connections & electrical characteristics......................................................1–41 Internal interfaces..................................................................................................................................................................1–41 Internal interfaces...........
RM-84/99 System Module Nokia Customer Care Table 21 Flash LED interface electrical characteristics .....................................................................................................1–50 Table 22 Back-up battery connections...................................................................................................................................1–50 Table 23 Back-up battery electrical characteristics..................................................................................
RM-84/99 System Module Nokia Customer Care (This page left intentionally blank.) Page 1–6 Company Confidential Copyright ©2005 Nokia. All Rights Reserved.
RM-84/99 System Module Nokia Customer Care Baseband description System module block diagram The device consists of two different main modules: transceiver and UI. The transceiver board consists of baseband and RF components. The UI board consists of key domes and keypad backlights. Connection between the UI and the transceiver board is established via a board-to-board spring connector. Note: In this description, the user interface HW covers display, camera, keyboard, keyboard backlight and ALS.
RM-84/99 System Module Nokia Customer Care Baseband functional description Digital baseband consists of an ISA (Intelligent Software Architecture) based modem and Symbian based application sections. The modem functionality is in RAP3G, and OMAP acts as a platform for Symbian applications. The terms ISA and Symbian are used refer to the software environment of these devices. The modem section consists of a RAP3G ASIC with NOR FLASH and SDRAM memory as the core.
RM-84/99 System Module Nokia Customer Care Figure 3 OMAP1710 high level block diagram Section Description Helen3 (OMAP1710) processor also called an application ASIC because it is processing application SW and handles the UI SW. It consists of OMAP3.3 and peripheral subsystems like camera, display and keyboard driver blocks. OMAP3.3 consists of ARM926 (MPU subsystem), TMS320C55x (DSP subsystem), DMA and OMAP3.3s internal peripherals. Helen3 (OMAP1710) MPU subsystem based on an ARM926EJ.
RM-84/99 System Module Nokia Customer Care Section Description USB & modem interface These two modules enable the platform to support a universal serial link and a dedicated modem interface, enabling a high data transfer rate between the modem and the application chip. System components System components are group of modules responsible for managing system interactions such as interrupt, clock control and idle.
RM-84/99 System Module Mode SLEEP Nokia Customer Care Description SLEEP mode is entered only from PWR_ON mode with the aid of SW when the system’s activity is low. There are in principle three different sleep modes: • OMAP1710 sleep • RAP3G sleep • OMAP and RAP3G sleep (deep sleep) In SLEEP mode RETU’s regulators VIO, VDRAM, VSIM1, VSIM2, VAUX and Vana are in low quiescent current mode (output voltages still present but regulators will not give as much current out).
RM-84/99 System Module Nokia Customer Care Figure 4 State diagram Voltage limits Parameter Description Value VMSTR Master reset threshold (RETU) 2.2V (typ.) VMSTR+ Threshold for charging, rising (TAHVO) 2.1V (typ.) VMSTR- Threshold for charging, falling (TAHVO) 1.9V (typ.) VCOFF+ Hardware cutoff (rising) 2.9V (typ.) VCOFF- Hardware cutoff (falling) 2.6V (typ.) SWCOFF SW cutoff limit ~3.2V Page 1–12 Company Confidential Copyright ©2005 Nokia. All Rights Reserved.
RM-84/99 System Module Nokia Customer Care The master reset threshold controls the internal reset of Retu / (Tahvo). If battery voltage is above VMSTR, Tahvo’s charging control logic is alive. Also, RTC is active and supplied from the main battery. Above VMSTR, Tahvo 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.
RM-84/99 System Module Nokia Customer Care Power distribution Figure 5 Power distribution diagram Power supply components: • • • • • • RETU TAHVO Helen VCORE SMPS BT LDO camera LDO Page 1–14 Company Confidential Copyright ©2005 Nokia. All Rights Reserved.
RM-84/99 System Module Nokia Customer Care • backlight SMPS All the above are powered by the main battery voltage. Battery voltage is also used on the RF side for power amplifiers (GSM PA & WCDMA PA) and for RF ASICs Hinku (Rx) & Vinku(Tx). Discrete power supplies are used to generate 2.8V to BT, 1.5V for the camera IO voltage, 2.8V for the front camera IO voltage, 1.3V/1.5V for Helen 3 and 18V for the backlight LEDs. The device supports both 1.8V/3V SIM cards which are powered by RETU / VSIM1.
RM-84/99 System Module Nokia Customer Care Figure 6 System start-up timing Clocking scheme There are two main clocks in the system: 38.4MHz RF clock produced by VCTCXO in RF section and 32.768kHz sleep clock produced by RETU with an external crystal. RF clock is generated only when VCTCXO is powered on by RETU regulator. Regulator itself is activated by SleepX signals from both RAP3G and Helen3. When both CPUs are on sleep, RF clock is stopped. RF clock is used by RAP3G that then provides (divided) 19.
RM-84/99 System Module Nokia Customer Care Figure 7 Clocking scheme Bluetooth/FM module The Bluetooth and FM radio solutions of the device are realised with a combined BTFM module. This module has the Bluetooth solution and FM radio solution combined into a single component. However, the two solutions are electrically isolated from one another. Bluetooth Bluetooth provides a fully digital link for communication between a master unit and one or more slave units.
RM-84/99 System Module Nokia Customer Care Figure 8 SIM interface Retu handles the detection of the SIM card. The detection method is based in the BSI line. Because of the location of the SIM card, removing the battery causes a quick power down of the SIM IF. The Retu SIM1 interface supports both 1.8V and 3.0V SIM cards. The SIM interface voltage is first 1.8V when the SIM card is inserted, and if the card does not response to the ATR a 3V interface voltage is used.
RM-84/99 System Module Nokia Customer Care CMD is a bi-directional command channel used for card initialization and data transfer commands. The CMD signal has two operational modes: open-drain and push-pull mode. The open-drain mode is used for card initialization and the push-pull mode for fast command transfer. CMD commands are sent by the host and CMD responses are sent by the card. DAT is a bi-directional data channel, which operates in the push-pull mode.
RM-84/99 System Module Nokia Customer Care Figure 11 Block diagram of the back camera module Camera construction This section describes the mechanical construction of the camera module for getting a better understanding of the actual mechanical structure of the module. Table 1 Camera specifications Sensor type CMOS Sensor Photo detectors 2 million F number/Aperture f/3.2 Focal length 4.
RM-84/99 System Module Nokia Customer Care ISO 250 – 1000 (Automatic) Colours 16.7 million / 24-bit Capture Modes Still capture: Auto, User, Portrait, Landscape, Night, Sports Video capture: Normal and Night Figure 12 Camera module cross section and assembly principle Figure 13 Camera module bottom view including serial numbering Issue 1 Company Confidential Copyright ©2005 Nokia. All Rights Reserved.
RM-84/99 System Module Nokia Customer Care The camera module as a component is not a repairable part, meaning that the components inside the module may not be changed. Cleaning dust from the front face is allowed only. Use clean compressed air. The camera module uses socket type connecting. For versioning, laser marked serial numbering is used on the PWB. The main parts of the module are: • Lens unit including lens aperture.
RM-84/99 System Module Nokia Customer Care Figure 14 Slider switch connection Flash LED The device back camera has a flash LED (FLED), providing better lighting conditions in darker environments. The same LED is also used as an indicator light to indicate video clip recording. The FLED is located next to the back camera under the camera slide. It cannot be used when the slide is closed, and it is only used in the still image mode or as an indicator for video recording or image capturing.
RM-84/99 System Module Nokia Customer Care Figure 15 Simplified flash LED connection Front camera The front camera has VGA (640x480) resolution, and it is mainly used for video calls. It can also be used as a still camera and camcorder. The front camera is controlled and its data is collected by Helen APE. The I/O voltage of Helen is 1.8V and the I/ O voltage of the camera is 2.8V. Because of this, a level shifter is used for the interface between Helen and the camera.
RM-84/99 System Module Nokia Customer Care Figure 16 Front camera connections User interface Display interface Display module mechanical concept Figure 17 General diagram of the LCD module Display features: • 262,144 colours Issue 1 Company Confidential Copyright ©2005 Nokia. All Rights Reserved.
RM-84/99 System Module Nokia Customer Care • Partial display function Power saving by pausing display process on part of the screen.
RM-84/99 System Module Key Nokia Customer Care Row# kbc_# Column# kbr# Switch Ref. CLEAR 6 2 U10 APPS 6 3 U12 Operator 5 2 U9 NAVI Left 0 2 S320 NAVI Right 0 3 NAVI Up 1 2 NAVI Down 1 3 NAVI Select 1 0 Left Soft Key 0 0 U7 Right Soft Key 0 1 U6 Camera 4 2 S1 Voice Not Required Issue 1 Company Confidential Copyright ©2005 Nokia. All Rights Reserved.
RM-84/99 System Module Nokia Customer Care Keyboard layout Figure 18 Keyboard layout Display and keyboard backlight The device has one LED Driver (SMPS) that is used to drive both display and keyboard LEDs. The LED driver consists of two LED chains: display LED chain and keyboard LED chain. Both chains contain four LEDs, eight in total. The current adjustment of the driver is done from the display LED branch. The keyboard current also depends on the display brightness.
RM-84/99 System Module Nokia Customer Care Table 3 LED driver control signals From To Voltage Function GenOut1 TAHVO R2302 (10k) 0V / 1.8V Maximum current control (0V ->max curr.) GenOut2 TAHVO R2301 (4k7) 0V / 1.8V PWM TAHVO J2309, N2301 PWM 0%-100%, 1.8V Current PWM control (16 steps) GenOut3 TAHVO V2300 0V / 1.8V Keyboard LEDs ON (1.8V) /OFF (0V) ALS interface Ambient Light Sensor (ALS) is located in the upper part of the phone.
RM-84/99 System Module Nokia Customer Care ASICs RAP3G ASIC RAP3G ASIC is a 3G Radio Application Processor. RAM memory is integrated into RAP3G. In general RAP3G consists of three separate parts: • Processor subsystem (PSS) that includes the main processor and related functions • MCU peripherals that are mainly controlled by MCU • DSP peripherals that are mainly controlled by DSP RAP3G core voltage (1.4V) is generated from Tahvo VCORE and I/O voltage (1.8V) is from Retu VIO.
RM-84/99 System Module Nokia Customer Care Combo memory The application memory of the device consists of NAND/DDR combo memory. The stacked DDR/NAND application memory has 512 Mbits of DDR memory and 512 Mbits of flash memory. DDR DRAM memory is stacked above the NAND flash. OMAP includes a 16-bit dedicated memory interface called External Memory Interface Fast (EMIFF). This is used to support an interface for the DDR memory.
RM-84/99 System Module Nokia Customer Care Figure 20 Audio block diagram Internal microphone Internal microphone is used for HandPortable (HP) and Internal HandsFree (IHF) call modes. An analogue electret microphone is connected to Retu ASIC’s Mic1P and Mic1N inputs via asymmetric electrical connection. The microphone is biased by Retu ASIC MicB1 bias voltage output. Figure 21 Internal microphone circuitry External microphone Galvanic accessories are connected to the system connector (Pop-PortTM).
RM-84/99 System Module Nokia Customer Care Accessory audio mode is automatically enabled/disabled during connection/disconnection of dedicated phone accessories. External microphone circuitry is biased by Retu ASIC MicB2 bias voltage output. The circuitry provides a symmetrical connection for the microphone from the Pop-PortTMconnections, XMICN and XMICP, to Retu ASIC inputs, Mic2P and Mic2N.
RM-84/99 System Module Nokia Customer Care Figure 24 Internal speaker circuitry External earpiece All galvanic accessories are connected to the system connector (Pop-Port™). The accessory audio mode is automatically enabled/disabled during connection/disconnection of dedicated phone accessories. Retu ASIC provides two output channels in either single-ended or differential format. Retu ASIC outputs XearL and XearLC form the left channel audio output, and XearR and XearRC the right channel audio output.
RM-84/99 System Module Nokia Customer Care Figure 26 Vibra circuitry Pop-portTM connector Pop-PortTM connector provides a fully differential 4–wire stereo line-level output connection and fully differential 2-wire mono line-level or microphone level input connection. The handsfree driver in Retu is meant for the headset. The output is driven in a fully differential mode. In the fully differential mode, the handsfree pin is the negative output and the HFCM pin is the positive output.
RM-84/99 System Module Nokia Customer Care Pin #/ Signal name Signal description 10 / XMIC P Spectral range Audio in 300-8k Voltage/ Current levels Max or nominal Notes serial impedance 1Vpp & 2.5-2.78VDC 11 / HEAR N Audio out 20-20k 1Vpp 10Ω 12 / HEAR P Audio out 20-20k 1Vpp 10Ω 13 / HEAR R N Audio out 20-20k 1Vpp 10Ω Not conn. in mono 14 / HEAR R P Audio out 20-20k 1Vpp 10Ω Not conn.
RM-84/99 System Module Description Nokia Customer Care Parameter Min Typ Max Unit High-level input voltage (VDDS = 1.8V) VIH 0.7 x VDDS VDDS V Low-level input voltage VIL 0 0.3 x VDDS V High-level output voltage VOH 0.8 x VDDS VDDS V Low-level output voltage VOL 0 0.22 x VDDS V 25 ns Rise/fall time tR/tF Notes RAP3G specific VOUT electrical characteristics Description Vout regulator for external accessories Parameter Min VOUT 2.43 Max 2.
RM-84/99 System Module Nokia Customer Care Description Parameter Min Differential input sensitivity VDI 0.2 Differential input voltage range VCM 0.8 Low-level output voltage VOL High-level output voltage (driven) Output signal crossover voltage Max Unit Notes V |(D+) - (D-)| 2.5 V Included VDI range 0 0.3 V VOH 2.8 3.6 V VCRS 1.3 2 V FBUS interface electrical characteristics Description Parameter Min Max Unit High-level input voltage VIH 0.
RM-84/99 System Module Nokia Customer Care Audio signal electrical characteristics Description Parameter Typ Unit Notes XMIC N Audio in 1 Vpp DC Offset 2.5-2.78V XMIC P Audio in 1 Vpp DC Offset 2.5-2.
RM-84/99 System Module Nokia Customer Care Pin Signal I/O <- Engine connection Helen2/3 MMC2_CLK Notes 5 CLK 6 Vss2 7 DAT <-> Helen2/3 MMC2_DAT0 Bi-directional data bus - MMCDET -> Helen2/3 btwake1(in) [P10] MMC card detect GND External clock for the MMC card, Max 20 MHz Ground Charger connector and charging interface connections & electrical characteristics Figure 28 Charger connector Table 6 Charging interface connections Pin Signal I/O 1 Vchar In 2 Charge GND Engine conn
RM-84/99 System Module Description Nokia Customer Care Parameter Min Max Unit Notes Threshold for charging, rising (TAHVO) VMSTR+ 2.1 V Typical value Threshold for charging, falling (TAHVO) VMSTR- 1.
RM-84/99 System Module Nokia Customer Care Name of Connection Connector reference ALS V4400 Vibra M2100 Microphone B2100 Earpiece B2101 IHF speaker B2102 UI module connector and IF connections Figure 30 UI connector Table 10 User interface connections Pin 1 Signal I/O GND Engine connection GND 2 LED+ <- N2301 VLEDOUT2 3 Col2 -> Helen3 Kbc_2 -> 4 LED- 5 Col1 6 GND Page 1–42 Notes -> Discrete Backlight SMPS (controlled by Tahvo) R2305 + V2300 SETCURR2 Serial resistor
RM-84/99 System Module Nokia Customer Care Pin Signal I/O Engine connection 7 Row3 -> Helen3 Kbr_3 8 Row2 -> Helen3 Kbr_2 9 Row1 -> Helen3 Kbr_1 10 Row6 -> Helen3 Kbr_6 11 Row0 -> Helen3 Kbr_0 12 Col0 -> Helen3 Kbc_0 13 Row5 -> Helen3 Kbr_5 14 Row4 -> Helen3 Kbr_4 15 GND 16 Col3 Notes Voice switch connection GND -> Helen3 Kbc_3 Keyboard interface electrical characteristics Description Parameter Min Typ Max Unit Notes High-level input voltage VIH
RM-84/99 System Module Nokia Customer Care Display connector and interface connections Figure 31 Display connector Table 11 Display interface connections Pin 1 2 Signal I/O Engine connection Notes GND WRX -> Helen3 Lcdwrx Write Enable (active low) 3 GND 4 D0 <-> Helen3 Lcdda0 Data 5 D1 <-> Helen3 Lcdda1 Data 6 D2 <-> Helen3 Lcdda2 Data 7 D3 <-> Helen3 Lcdda3 Data 8 GND 9 VDDI 10 VDD 11 GND <- Retu VIO Interface voltage <- Retu VAUX Core voltage LEDin 12
RM-84/99 System Module Nokia Customer Care Pin Signal I/O CSX 15 <- Engine connection Helen3 Lcdcsx Chip Select (active low) D/CX 16 Notes <- Helen3 Lcdcmd Data/ Command select (high=data, low =command) 17 GND 18 D7 <-> Helen3 Lcdda7 Data 19 D6 <-> Helen3 Lcdda6 Data 20 D5 <-> Helen3 Lcdda5 Data 21 D4 <-> Helen3 Lcdda4 Data 22 TE -> Helen3 Te Tearing Effect <- Helen3 Lcdrdx Read Enable (active low) <- Helen3 Gpio_60 Reset (active low) RDX 23 RESX
RM-84/99 System Module Nokia Customer Care Pin Signal 7 VDDI 8 9 10 <- Engine connection Regulator VCAM Notes Camera Digital Voltage GND3 Ground line corresponding to ExtClk CLK+ Ccpclkp Differential serial clock, positive node VCtrl Camera module activating signal Ccpclkn Differential serial clock, negative node -> CAMVCTRL 11 I/O CLK- Helen3 <- Helen3 -> Helen3 12 VDD <- Retu VAUX Camera Analog Voltage 13 Strobe -> Camera Cam_strobe Strobe timing pulse 14 Ground
RM-84/99 System Module Nokia Customer Care Table 14 Camera supply voltage characteristics Description Parameter Min Typ Max Unit Camera analog voltage VDD 2.37 2.5 2.63 V Camera digital voltage VDDI 1.4 1.5 1.65V V Table 15 Camera control IF electrical characteristics Description Parameter Min Typ. Max Unit Notes SDA, SCL, Vctrl, ExtClk VIH 1.5 1.8 VDD V High-level input voltage SDA, SCL, Vctrl, ExtClk VIL 0 - 0.54 V Low-level input voltage SDA VOL 0 - 0.
RM-84/99 System Module Nokia Customer Care Pin Signal From To Description 2 EXTCLK Helen ETMTS1 Camera via level shifter Clock for external input 3 RESET Helen ETMPSTAT0 Camera via level shifter Camera module reset (active low) 4 SCI Helen scl (Helen GPIO11) Camera via level shifter I2C clock signal (Camera control) 5 SDA Helen sda (Helen NFCS_0) Camera via level shifter I2C data signal (Camera control) 6 VDDD LDO N1470 (VCAM) Camera VDD for camera digital circuits and sensor (
RM-84/99 System Module Nokia Customer Care Pin Signal From To Description - VCAM2_EN Helen ETMTS2 LDO N1472 Enable signal for LDO N1472 (source of VCAM2 VDD 2.8V) - FCAMLSEN Helen GPIO_15 N1474 Enable signal for Level Shifter N1474. Table 17 Front camera voltage levels from Helen point of view Parameter Min Max Unit Vhigh 0.7*VIO VIO V 0.3*VIO V Vlow Table 18 Front camera voltage levels from camera module point of view Parameter Min Max Unit Vhigh 0.7*Vcam2 Vcam2. V 0.
RM-84/99 System Module Nokia Customer Care Table 21 Flash LED interface electrical characteristics Description Parameter Min Typ Max Unit GPIO28 GPIO output 1.72 1.8 1.92 V ARMIO4 GPIO output 1.72 1.8 1.92 V STROBE Strobe signal output 2 - 2.5 V Slider switch electrical characteristics Signal name GPIO53 From Helen To S5202 Low value 160mV High value 1,8V Description Slider switch cover status signal.
RM-84/99 System Module Nokia Customer Care At BB frequency the signal is amplified and fed to a low pass filter giving the selectivity of the receiver. The filters need RC constants, which suffer of process variations. Therefore the integrated resistors are adjustable by a digital control word. The Rx channel filter must be calibrated with an automatic routine whenever N7500 IC is changed to a phone. In the WCDMA mode, the corner frequency of the filter is set to ca. 2.1MHz.
RM-84/99 System Module Nokia Customer Care After the filter the signal is fed to the IQ modulator, which converts the signal to final Tx frequency. There are two separate I/Q modulators:.one for WCDMA and another for EGSM900 and GSM1800/1900 signals. The modulator is followed by two VGA stages giving 85 dB of gain control range. The signal then exits N7501 via a balanced line.
RM-84/99 System Module Nokia Customer Care The bias currents are also used as PA on/off controls. The structure of the WCDMA PA is shown in the following figure. The supply voltage for the output stage is got from a DCDC converter in order to improve the efficiency at low power levels. PA DCDC converter The control of the DCDC converter is fed back from the power detector circuit. The DCDC converter limits the lowest supply voltage to 1.5 V.
RM-84/99 System Module Nokia Customer Care Figure 34 GSM transmitter GSM power control A closed control loop comprise an integrated power detector (in PA module) and an error amplifier. The error amplifier resides in N7501, and it controls the transmitter power of GSM. Detector output from the PA gives a DC level proportional to the output power. The DC voltage is fed to the negative input of the error amplifier, where it is compared to the level of the reference signal, TXC.
RM-84/99 System Module Nokia Customer Care Figure 35 GSM/EDGE power control topology and control signals Figure 36 Power control signal usage in GSM (GMSK) and EDGE (8PSK) transmission Note: Timings are not shown accurately in the previous figure. Issue 1 Company Confidential Copyright ©2005 Nokia. All Rights Reserved.
RM-84/99 System Module Nokia Customer Care GSM PA module A single GSM/EDGE PA module contains two separate amplifier chains, one for EGSM900 (and GSM850) and another for GSM1800/1900. Both amplifiers have a battery supply connection and two bias current inputs. The bias current for final amplifier stage is adjusted according the power level in use in order to optimise efficiency. The bias currents are also used as on/off switching signals for PAs.
RM-84/99 System Module Nokia Customer Care The output signal of the VCTCXO is directly connected to both N7500 and N7501 where it is used as synthesizer reference. N7500 also contains a balanced buffered output for supplying the clock signal to the digital BB ASIC and a single ended buffer for Bluetooth.
RM-84/99 System Module Nokia Customer Care Frequency mappings EGSM900 frequencies Page 1–58 Company Confidential Copyright ©2005 Nokia. All Rights Reserved.
RM-84/99 System Module Nokia Customer Care GSM1800 frequencies Issue 1 Company Confidential Copyright ©2005 Nokia. All Rights Reserved.
RM-84/99 System Module Nokia Customer Care GSM1900 frequencies Page 1–60 Company Confidential Copyright ©2005 Nokia. All Rights Reserved.
RM-84/99 System Module Nokia Customer Care WCDMA Rx frequencies Issue 1 Company Confidential Copyright ©2005 Nokia. All Rights Reserved.
RM-84/99 System Module Nokia Customer Care WCDMA Tx frequencies Page 1–62 Company Confidential Copyright ©2005 Nokia. All Rights Reserved.
