Nokia 1255(RH-79) User manual

Issue 1 01/2006 Company Confidential ©2006 Nokia Corporation
Nokia Customer Care
1255 (RH-79)
Mobile Terminal
Technical Summary

1255 (RH-79)
Technical Summary
Page 2©2006 Nokia Corporation Company Confidential Issue 1 01/2006
Contents Page
Introduction............................................................................................................... 3
Sales Package ..................................................................................................4
Supported Accessories......................................................................................4
Exploded View.......................................................................................................... 5
Assembly Parts List...........................................................................................6
Baseband Module Overview.................................................................................... 7
MSM6000..........................................................................................................7
PM6610.............................................................................................................7
Flash Memory....................................................................................................7
RF Module Overview................................................................................................ 9
Transmitter........................................................................................................9
Receiver............................................................................................................9

1255 (RH-79)
NokiaCustomerCare TechnicalSummary
Issue 1 01/2006 ©2006 Nokia Corporation Company Confidential Page 3
Introduction
The Nokia 1255 mobile terminal offers the following engines and features:
Model Type Frequency(MHz) GPS Module
1255 RH-79 800 No
z96 x 65 pixel black and white display
zRemovable User Information Module (RUIM), disabled in non-RUIM
markets
zInternal antenna
zInternal vibra
zEVRC Vocoder
z8 polyphonic ringtones
zPredictive text
Parameter Value and Unit
BL-5C
Talk time
Standby time
Up to 240 min
Up to 240 hours
Dimensions:
Volume
Length
Width
Thickness
Weight
74.3 cc
104.5 mm
43.5 mm
19.28 mm
84 grams

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Technical Summary
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Sales Package
Name Type
Transceiver RH-79
Standard Battery
(970 mAh Li-Ion) BL-5C
Charger AC-3
Supported Accessories
Type Name
AC-3 Compact Charger
AC-4 Travel Charger
DC-4 Car Power Adapter
HS-9 CDMA 2.5mm headset

1255 (RH-79)
NokiaCustomerCare TechnicalSummary
Issue 1 01/2006 ©2006 Nokia Corporation Company Confidential Page 5
Exploded View
Microphone (A1)
I014
SAM Module (A1)
I011
Shielding Case
I009
RUIM Lid (A1)
I016
Vibrator (A1)
I013
A Cover Assy
I001
Domesheet
I008
LCD Module Shielding Assy
I004
Screw x 6
I003
(T1.8x6)
Keymat
I002 Receiver
I005
D Cover Blank (A1)
I010
RUIM Label
I017
DC Jack (A1)
I015
LCD Module
I006
Engine
I007
A1 = D Cover Assy
Release Spring (A1)
I018
Release Button (A1)
I019 B Cover Blank
I021
Speaker (A1)
I012
Type Label (A1)
I020
Microphone (A1)
I014
SAM Module (A1)
I011
Shielding Case
I009
RUIM Lid (A1)
I016
Vibrator (A1)
I013
A Cover Assy
I001
Domesheet
I008
LCD Module Shielding Assy
I004
Screw x 6
I003
(T1.8x6)
Screw x 6
I003
(T1.8x6)
Keymat
I002 Receiver
I005
D Cover Blank (A1)
I010
RUIM Label
I017
DC Jack (A1)
I015
LCD Module
I006
Engine
I007
A1 = D Cover Assy
Release Spring (A1)
I018
Release Button (A1)
I019 B Cover Blank
I021
Speaker (A1)
I012
Type Label (A1)
I020

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Technical Summary
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Assembly Parts List
Qty Description CCT Code
1 A Cover Assy I001
1 Keymat I002
6 Screw I003
1 LCD Module Shielding Assy I004
1 Receiver I005
1 LCD Module I006
1 Engine I007
1 Domesheet I008
1 Shielding Case I009
1 D Cover Blank I010
1 SAM Module Module I011
1 Speaker I012
1 Vibrator I013
1 Microphone I014
1 DC Jack I015
1 RUIM Lid I016
1 RUIM Label I017
1 Release Spring I018
1 Release Button I019
1 Type Label I020
1 B Cover Blank I021

1255 (RH-79)
NokiaCustomerCare TechnicalSummary
Issue 1 01/2006 ©2006 Nokia Corporation Company Confidential Page 7
Baseband Module Overview
The mobile terminal uses a CDMA single mode engine (Cellular/ 800) with
Qualcomm baseband consisting of three ASICs:
zMobile Station Modem processor, MSM6000 (MSM)
zPower Management IC, PM6610 (PM)
z32MB Flash memory with 8MB of Psram memory
MSM6000
The MSM6000 device is a mixed-signal baseband chip that enables manufacturers
to meet or exceed the specifications of mobile stations for worldwide cdmaOne and
3G CDMA systems, including IS-95-A, IS-95-B, IS-2000 1x Release 0.
Subsystems within the MSM6000 device include a CDMA processor, a DFM
processor, QCT’s QDSP2000™ DSP for voice compression, PLL and an ARM®
ARM7TDMI microprocessor.Also integrated in the MSM6000 device are an audio
voice codec and analog interfaces for the radioOne RF ASICs. Controllers for an
R-UIM, GPIOs, and peripheral interfaces complete the system integration.
PM6610
The PM6610 device integrates all low-cost wireless handset power management,
general housekeeping, and user interface support functions into a single mixed
signal IC. Its versatile design is suitable for low-cost CDMAhandsets.
The power management portion accepts power from common sources – battery,
external charger or adapter – and generates all the regulated voltages needed to
power the appropriate handset electronics. It monitors and controls the power
sources, detecting which sources are applied, verifying that they are within
acceptable operational limits, and coordinates battery recharging while maintaining
the handset electronics supply voltages. On-chip voltage regulators generate seven
programmable output voltages using low dropout voltage regulators, all derived
from a common trimmed voltage reference.
Flash Memory
The Simultaneous Read/Write architecture provides simultaneous operation by
dividing the memory space into 4 banks, which can be considered to be four
separate memory arrays. The device can improve overall system performance by

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Technical Summary
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allowing a host system to program or erase in one bank, then immediately and
simultaneously read from another bank with zero latency.
This device requires a single 3.0 volt power supply for both read and write functions.
It’s command set is entirely compatible with the JEDEC 42.4 single-power-supply
Flash standard.

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NokiaCustomerCare TechnicalSummary
Issue 1 01/2006 ©2006 Nokia Corporation Company Confidential Page 9
RF Module Overview
The RF module receives and demodulates the radio frequency signals from the
base station and transmits the modulated RF signals to the base station. It consists
of the following functional sub-modules:
zTransmitter, RFT6122
zReceiver, RFR6122
Transmitter
The RFT6122 IC is a baseband-to-RF transmitter IC, an integral component of
QUALCOMM’s radioOne CMOS RF chipset.All radioOne ICs are highly integrated
and fulfill CDMA2000 standard. Overall radioOne performance depends on the
combined, complementary performance of all the ICs in the chipset.
The RFT6122 IC provides the Zero-IF transmit signal path for Cellular-CDMA
transmission. For this chipset, Cellular-CDMA refers to band classes 0 and 3 as
defined by the cdma2000 standard, with mobile station transmitters operating
between 824 and 925 MHz. The transmit signal path includes baseband amplifiers,
quadrature upconversion, gain control RF amplification, and an output driver
amplifier.
Receiver
The RFR6122 IC is an RF-to-baseband receiver IC, an integral component of
QUALCOMM’s radioOne CMOS RF chipset.All radioOne ICs are highly integrated
and fulfill cdma2000 standard. Overall radioOne performance depends uon the
combined, complementary performance of all the ICs in the chipset.
The RFR6122 IC provides the Zero-IF receiver signal path for Cellular-CDMA
reception. For this chipset, Cellular-CDMA refers to band classes 0 and 3 as
defined by the cdma2000 standard, with mobile station receivers operating between
832 and 894 MHz. The Rx signal path includes the LNA, quadrature
downconversion, and baseband functions.

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