Common Control Etus; Cpuii( )-U10 Etu; Description; Installation - NEC Electra Elite IPK II System Hardware Manual

Document Revision 3
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S 4 C
ECTION OMMON
The Electronic Telephone units described in this section control the common
functions of the KSU.
4.1
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6 - 8
C ETU
ONTROL S

CPUII( )-U10 ETU

4.1.1

Description

The
CPUII( )-U10 ETU
This ETU has a Central Processing Unit and a Microprocessing Unit
(MPU).
A 32-bit microprocessor executes the programs stored on the Flash
ROM ICs of the MPU unit. This controls the entire system when data
is transferred to and from other ETUs.
This ETU provides the following items:
Time Switch Control 512 CH
Digital Phase Lock Loop (DPLL)
Static Random Access Memory (SRAM)
DSPII-U10 (Daughter Board)
32-bit Processor
25 MHz Clock
64-channel DTMF Push Button Receiver (PBR)
Two blocks of 32 Conference Circuits with any number of
parties as long as the block limit is not exceeded.
External Music-on-Hold input (also used for station background
music)
Flash ROM (FROM)
Call Progress and DTMF Tone Generator
Memory Backup Battery (Retains memory for approximately
three years when fully charged)
Key Function (KF)/Multifunction (MF) Registration
Compact Flash Memory – 128MB maximum, Compact Flash
Type 1 only (must be FAT 16 format)
4.1.2

Installation

Each system must have this ETU installed in the CPU/EXP slot of
the basic B64-U20 KSU. Each system has one CPUII( )-U10 ETU.
Refer to Figure 6-7 CPUII( )-U10
is the Central Processing Unit for the system.
ETU.
Installing ETUs (Circuit Cards)
Electra Elite IPK II