CCS Technical Documentation
System Module
NKC-1X
Issue 1 02/03
Nokia Corporation
Page 13
Audio Codec
The baseband supports two external microphone input areas and one external earphone
output. The input can be taken from an internal microphone, a headset microphone or
from an external microphone signal source through a headset connector. The output for
the internal earpiece is a dual-ended type output, and the differential output is capable
of driving 4Vpp to the earpiece with a 60 dB minimum signal as the total distortion ratio.
The input and output signal source selection and gain control is performed inside the
UEM Asic, according to the control messages from the UPP.
UI Drivers
There is a single output driver for the buzzer, display and keyboard LEDs inside the UEM.
These generate PWM square wave for the various devices.
AD Converters
The UEM is equipped with a 11-channel analog to digital converter. Some AD converter
channels (LS, KEYB1-2) are not used in NKC-1X . The AD converters are calibrated in the
production line.
UPP
Introduction
NKC-1X uses the UPPv4M ASIC. The RAM size is 4M. The processor architecture consists
of both the DSP and the MCU processors.
Blocks
The UPP is internally partitioned into two main parts: (1) the Brain and (2) the Body.
1
The Processor and Memory System
(that is, the Processor cores, Mega-cells,
internal memories, peripherals and external memory interface) is known as the
Brain
.
The Brain consists of the following blocks: (1) the DSP Subsystem (DSPSS), (2) the
MCU Subsystem (MCUSS), (3) the emulation control EMUCtl, (4) the program/
data RAM PDRAM and (5) the Brain Peripherals–subsystem (BrainPer).
2
The NMP custom cellular logic functions
are known as the
Body
.
The Body contains interfaces and functions needed for interfacing other base-
band and RF parts. The body consists of, for example, the following sub-blocks:
(1) MFI, (2) SCU, (3) CTSI, (4) RxModem, (5) AccIF, (6) UIF, (7) Coder, (8) BodyIF, (9)
PUP.
Flash Memory
Introduction
The NKC-1X transceiver uses a 16 Mbit flash as its external memory. The VIO regulator is
used as a power supply for normal in-system operation. An accelerated program/erase
Summary of Contents for NKC-1X Series
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