peb2045 Infineon Technologies Corporation, peb2045 Datasheet

peb2045

Manufacturer Part Number

peb2045

Description

Memory Time Switch Cmos Mtsc

Manufacturer

Infineon Technologies Corporation

Datasheet

1.PEB2045.pdf (3 pages)

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Memory Time Switch CMOS (MTSC)

General Description

The MTSC PEB 2045 is a monolithic CMOS circuit, which

has the ability to connect any of the 512 PCM channels of

16 incoming PCM lines to any of the 256 PCM channels of

eight output lines.

The PCM information for a complete frame is stored in the

4-Kbit speech memory SM, i.e. all of the 512 words with 8 bits

are written into a fixed position of the SM. This is controlled

by the input counter every 125 s. The words are read using

random access with an address that is stored in a connection

memory CM for each of the 256 output channels. The access

to the CM is controlled by the output counter.

To produce a connection the SM address and the CM

address must be written into the PEB 2045 via a P interface.

The SM-address contains the time-slots and line numbers of

the incoming PCM words. The CM address consists of the

time-slots and line numbers of the output words.

The PEB 2045 can be connected to 2-Mbit/s, 4-Mbit/s and

8-Mbit/s PCM systems, the device clock may be either

4.096 MHz or 8.192 MHz.

In a second operational mode the PEB 2045 together with the

PEB 2035 (ACFA, Advanced CMOS Frame Aligner) and the

PEB 2235 (IPAT, ISDN Primary Access Transceiver)

implements the system interface of up to four primary

multiplex access lines. This interface can be configured for

2-Mbit/s, 4-Mbit/s and 8-Mbit/s systems; a clock shift for input

and output lines with half clock step resolution is

programmable. Selection of operating modes and

programming is made by writing to the mode register and, via

the Indirect Access Register (IAR), the Clock Shift Register

(CSR) and the General Configuration Register (GCR).

The components PEB 2045 and PEF 2045 are functionally

identical. The difference between the two types lies in the

temperature range. The PEB 2045 operates in the

temperature range 0 to 70 C, the PEF 2045 in the range

– 40 to 85 C.

Applications

• All types of switching systems

• Concentrator function

• Frequency transforming interface between 2-Mbit/s,

• 16/16 space switch for 8-Mbit/s PCM systems

• System interface for up to four primary multiplex access

Siemens Aktiengesellschaft

4-Mbit/s and 8-Mbit/s PCM systems

lines in combination with the PEB 2035 (ACFA) and

*PEB 2235 (IPAT)

Type

PEB 2045-N

PEB 2045-P

PEF 2045-N

PEF 2045-P

Features

• Time/space switch for 2.048-, 4.096- and 8.192-kbit/s

• Different kinds of modes (2048, 4096, 8192 kbit/s

• Switching of up to 512 incoming PCM channels to up to

• 16 input and eight output PCM lines

• Configurable for primary access and

• Programmable clock shift with half clock

• Configurable for a 4096- and 8192-kHz device clock

• Tristate function for further expansion and tandem

• Tristate control signals for external drivers in primary

• 2048-kHz clock output in primary access configuration

• Space switch mode

• 8-bit P interface

• Single + 5-V power supply

• Advanced low power CMOS technology

PCM systems

or mixed mode)

256 outgoing PCM channels

standard applications

step resolution for input and output in primary access

configuration

operation

access configuration

Package

P-LCC-44-1 (SMD)

P-DIP-40-1 (not for new design)

PEB 2045

Related parts for peb2045

peb2045 Summary of contents

Page 1

Memory Time Switch CMOS (MTSC) General Description The MTSC PEB 2045 is a monolithic CMOS circuit, which has the ability to connect any of the 512 PCM channels of 16 incoming PCM lines to any of the 256 PCM channels ...

Page 2

Memory Time Switch CMOS (MTSC Interface Block Diagram Line Interface 1.544 Mbit / s 2.048 Mbit / s PEB 2235 IPAT ® Optimized System Interface for Four Primary Multiplex Access Lines Siemens ...

Page 3

Memory Time Switch CMOS (MTSC) PCM IN 2 MHz Memory time switch 16/16 for a non-blocking 512-channel switch PCM IN 2 MHz Memory time switch 32/32 for a non-blocking 1024-channel switch using tristate function ...

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