Nokia Customer Care RH-51/52, RH-67/68 Series Cellular Phones 7 - System Module Issue 3 09/2004 © 2004 Nokia Corporation.
RH-51/52, RH-67/68 7 - System Module Company Confidential Nokia Customer Care This page has been deliberately left blank Page 2 © 2004 Nokia Corporation.
Company Confidential Nokia Customer Care RH-51/52, RH-67/68 7 - System Module Table of Contents Page No Glossary of terms...................................................................................................................................... 5 Introduction ............................................................................................................................................... 6 System module block diagram ................................................................
RH-51/52, RH-67/68 7 - System Module Company Confidential Nokia Customer Care List of Figures Fig 1 Fig 2 Fig 3 Fig 4 Page 4 Page No Module block diagram ...................................................................................................................6 RH-51/52, RH-67/68 clocking.................................................................................................. 10 RH-51/52, RH-67/68 audio blocks.............................................................................
Company Confidential Nokia Customer Care RH-51/52, RH-67/68 7 - System Module Glossary of terms ASIC Application Specific Integrated Circuit BB Baseband BT Bluetooth BSI Battery Size Indicator CBus MCU controlled serial bus connected to UPP_WD2,UEME and Zocus CCP Compact Camera Port CPU Central Processing Unit DBus DSP controlled serial bus connected between UPP_WD2 and Helgo DSP Digital Signal Processor EGSM Extended – GSM GPRS General Packet Radio Service GSM Group Special Mobile/
RH-51/52, RH-67/68 7 - System Module Company Confidential Nokia Customer Care Introduction The system module RH-51/52, RH-67/68 consists of radio frequency (RF) and baseband (BB), including user interface (UI) with keyboard. System module block diagram The 1BZ system module is the engine board of the RH-51/52, RH-67/68 phone. It includes the baseband and RF functions of the phone and Bluetooth and camera modules as shown in the figure below.
Company Confidential Nokia Customer Care RH-51/52, RH-67/68 7 - System Module Functional description The heart of the BB is UPP_WD2, which includes the MCU, DSP and Digital Control Logic. Power is supplied by the UEME ASIC and a number of discrete regulators. Memory comprises of 2 x 128Mbit Stacked and 64Mbit flash memory devices and 128 Mbit (16 Mbytes) SDRAM. There are two audio transducers (earpiece 8 mm and IHF speaker 16 mm) and external galvanic headset (PopPortTM) interface.
RH-51/52, RH-67/68 7 - System Module Company Confidential Nokia Customer Care are lost if the supply voltage is switched off. Multiplexed flash memory interface is used to store the MCU program code and user data. The memory interface is a burst type FLASH with multiplexed address/data bus, running at 123.5/3MHz. Configuration of flash memory is a 2x128Mbit stacked flash memory and a 64Mbit flash memory. Both flash I/O and core voltage are 1.8 V supplied by UEME’s VIO.
Company Confidential RH-51/52, RH-67/68 7 - System Module Nokia Customer Care Voltage limits The voltage limits of the system are listed in the following table. These are also controlling system states. Parameter Description Value VMSTR+ Master reset threshold (rising) 2.1 V (typ.) VMSTR- Master reset threshold (falling) 1.9 V (typ.) VCOFF+ Hardware cutoff (rising) 3.1 V (typ.) VCOFF- Hardware cutoff (falling) 2.8 V (typ.) V_BUCOFF+ Back-up battery cutoff (rising) 2.1 V (typ.
RH-51/52, RH-67/68 7 - System Module Company Confidential Nokia Customer Care Figure 2: RH-51/52, RH-67/68 clocking. UPP_WD2 voltage/clock frequency adjusting No external clock is available for UPP_WD2 before VCXO starts. As reset is released, the VCXO is running and MCU uses the 26 MHz clock while DSP is in reset. There are three identical DPLL's, for MCU, for DSP and for accessory interfaces, which can be controlled independently.
Company Confidential Nokia Customer Care RH-51/52, RH-67/68 7 - System Module the different operating voltages. The discrete regulators consist of an SMPS to power UPPWD2 voltage core. In addition, there is a SMPS in 1BZ generating the operating voltage for display module backlighting. In 1BZ, the keyboard backlight is powered with a charge pump regulator. Power-up sequence (reset mode) RESET mode can be entered in four ways: by inserting the battery or charger, by RTC alarm or by pressing the power key.
RH-51/52, RH-67/68 7 - System Module Company Confidential Nokia Customer Care and is used during IMEI code setting. The third one is a power key watchdog. It is used to power off the system in case SW is stuck and the user presses the power key. This WD is SW configurable. There is also a “soft watchdog” in UPP_WD2. It is used to reset the chip in case software gets stuck for any reason. Charging Charging control and charge switch is in UEME.
Company Confidential Nokia Customer Care RH-51/52, RH-67/68 7 - System Module ZOCUS The ZOCUS device is a current sensor used for the battery bar display and for determining whether the phone is in a high current consuming mode. The ZOCUS device measures the voltage drop across a sense resistor in the battery voltage line. This sense resistor is formed from a PWB track and is on an internal layer of the PWB.
RH-51/52, RH-67/68 7 - System Module Company Confidential Nokia Customer Care RH-51/52, RH-67/68 baseband features and HW interfaces RH-51/52, RH-67/68 BB user interface UI-module interface The UI-module consists of the LCD and keymat. The colour display resolution is 176 x 208 and backlighting is via 4 white LED’s. The display is connected to the 1BZ module via an 24 pin plug and socket. The keymat is connected to 1BZ by 20-pin contact type connector.
Company Confidential RH-51/52, RH-67/68 7 - System Module Nokia Customer Care Multiplexed data lines of USB and Fast-Fbus are also single usage for USB only cause USB chip doesn’t have such functionality. Hence there’s no PopPortTM stereo headset without ACI chip in it, RH-51/52, RH-67/68 uses only the mono headset interface. RH-51/52, RH-67/68 audio concept RH-51/52, RH-67/68 audio includes an earpiece, a microphone, and a PopPortTM connector for headset and integrated handsfree (IHF).
RH-51/52, RH-67/68 7 - System Module Company Confidential Nokia Customer Care mWatts. It's driven by differential signals from UEME (EARP & EARN). It makes contact with the PWB via spring contacts. Microphone The microphone module for RH-51/52, RH-67/68 is used PopPortTM microphone module. Its sensitivity is -42dB Nominal. Contacts are done by springs. Two inputs are used from UEME, one for the normal internal microphone and the other for the headset.
Company Confidential RH-51/52, RH-67/68 7 - System Module Nokia Customer Care Figure 4: External audio connector Shielding GND XHEARPR XHEARNR HEAR P HEAR N XMIC P XMIC N DATA GND USB D- USB D+ Vout USB Vbus ChargeGND Headint (ACI) Shielding GND VChar PWB The handsfree (HF) driver in UEME is meant for the headset. In RH-51/52, RH-67/68, the output is driven in fully differential mode.
RH-51/52, RH-67/68 7 - System Module Company Confidential Nokia Customer Care Testing interfaces RH-51/52, RH-67/68 has a testing interface that is easy to access by service battery. The following signals are allocated on test pads. Table 1: Testing interface electrical specifications Pad No Name Dir Parameter Min 1 STI_Rx <- Vil (From Ostrich) Vih (From Ostrich) 2 STI_CLK 3 VPP 4 FBusTx 5 MBUS 6 FBusRx 7,9 GND 8 STI_Tx -> -> <-> <- Typ Max Unit 0 0.3*VIO V 0.
Company Confidential RH-51/52, RH-67/68 7 - System Module Nokia Customer Care Table 2: Electrical specifications for power supply interface in production testing Pin Name Min Typ Max Unit 1 VBAT 0 3.6 5.1 V 2 BSI 0 2.78 VFlash1 V 3 GND 0 Notes Internal pullup V 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.
RH-51/52, RH-67/68 7 - System Module Company Confidential Nokia Customer Care RF description RH-51, -67 is the GSM900/1800/1900 version and RH-52, -68 is the GSM850/1800/ 1900 version. The difference in RF module is 2 SAW filters, a capacitor on the 1BZ system module, and antenna module. The main ASIC of RF is Helgo 85G/86G, and power amplifier is RFMD RF9250, so called microPA. RH-51/52, RH-67/68 does not support EDGE, even though the RF module itself has the capacity for it.
