Datasheet > IMP8980DP/T

IMP8980DP/T

更新时间： 2024-01-28 15:59:10

品牌	Logo	应用领域
IMP		开关 PC
页数	文件大小	规格书
14页	137K
描述
PCM Digital Switch

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技术参数
数据手册

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IMP8980DP/T 技术参数

生命周期：	Obsolete	零件包装代码：	LCC
包装说明：	,	针数：	44
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.29	JESD-30 代码：	S-PQCC-J44
端子数量：	44	封装主体材料：	PLASTIC/EPOXY
封装形状：	SQUARE	封装形式：	CHIP CARRIER
认证状态：	Not Qualified	表面贴装：	YES
电信集成电路类型：	DIGITAL TIME SWITCH	端子形式：	J BEND
端子位置：	QUAD

IMP8980DP/T 数据手册

ISO 9001 Registered

IMP8980D

PCM Digital Switch

General Description

Functional Description

This CMOS device is designed for

switching PCM-encoded voice or data,

The ST-BUS architecture can be used

both in software-controlled digital voice

under microprocessor control, in a modern

digital exchange, PBX or Central Office. It

provides simultaneous connections for up

to 256 64kbit/s channels. Each of the eight

serial inputs and outputs consist of 32

64kbit/s channels multiplexed to form a

2048kbit/s ST-BUS stream. In addition,

the IMP8980D provides microprocessor

read and write access to individual

and data switching.

The ST-Bus serial streams operate

continuously at 2048kbit/s and are

arranged in 125µs wide frames which

contain 32 8-bit channels.

The IMP8980D can switch data from

channels on ST-BUS inputs to channels on

ST-BUS outputs and simultaneously

allows its controlling microprocessor to

read channels on ST-BUS inputs or write

to channels on ST-BUS outputs (Message

Mode). To the microprocessor, the

IMP8980D looks like a memory periph-

eral. The microprocessor can write to the

IMP8980D to establish switched connec-

tions between input ST-BUS channels and

output ST-BUS channels or to transmit

messages on output ST-BUS channels. By

reading from the IMP8980D, the micro-

processor can receive messages from

ST-BUS (Serial Telecom Bus) channels.

Features

♦ ST-BUS compatible

♦ 8-line x 32-channel inputs

♦ 8-line x 32-channel outputs

♦ 256 ports non-blocking switch

♦ Single power supply (+5V)

♦ 30mW power consumption

♦ Microprocessor-control interface

♦ Pin-compatible with Mitel MT8980

ST-BUS input channels or check which

Figure 1 Functional Block Diagram

C4i

F0i

V_SS

V_DD

ODE

Frame

Counter

Output

MUX

STo0

STo1

STo2

STo3

STo4

STo5

STo6

STo7

STi0

STi1

STi2

STi3

STi4

STi5

STi6

STi7

Parallel

Serial

Parallel

Converter

Data

Memory

Converter

Control Register

Control Interface

Connection

Memory

DS CS

R/W A5/

DTA D7/

CSTo

12 3 4 5 6 7...14

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