Datasheet > MT8920B-1

MT8920B-1

更新时间： 2024-01-20 17:38:59

品牌	Logo	应用领域
MITEL		/
页数	文件大小	规格书
29页	217K
描述
ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit

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数据手册

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MT8920B-1 数据手册

ISO-CMOS ST-BUS FAMILY MT8920B

ST-BUS Parallel Access Circuit

ISSUE 7

March 1997

Features

•

High speed parallel access to the serial ST-BUS

Ordering Information

Parallel bus optimized for 68000 µP (mode 1)

Fast dual-port RAM access (mode 2)

Access time: 120 nsec

MT8920BE

28 Pin Plastic DIP

MT8920BP

MT8920BS

28 Pin Plastic J-Lead

28 Pin SOIC

•

Parallel bus controller (mode 3) - no external

controller required

-40°C to 85°C

Flexible interrupt capabilities - two

independent/programmable interrupt sources

with auto-vectoring

Description

•

Selectable 24 and 32 channel operation

Programmable loop-around modes

Low power CMOS technology

The ST-BUS Parallel Access Circuit (STPA) provides

a simple interface between Mitel’s ST-BUS and

parallel system environments.

Applications

•

Parallel control/data access to T1/CEPT digital

trunk interfaces

•

Digital signal processor interface to ST-BUS

Computer to Digital PABX link

Voice store and forward systems

Interprocessor communications

Tx0

Dual Port Ram

32 X 8

Parallel-

D7-D0

to-serial

STo0

STi0

Converter

A4-A0

Rx0

Dual Port Ram

32 X 8

Serial-to-

Parallel

Converter

DS, OE

Parallel

Port

R/W, WE

Interface

Tx1

Dual Port Ram

32 X 8

Parallel-

to-Serial

Converter

DTACK,

BUSY, DCS

STo1

Interrupt

Registers

IRQ, 24/32

Comp/

MUX

Control

Registers

IACK, MS1

A5, STCH

MMS

F0i

C4i

Address

Generator

Figure 1 - Functional Block Diagram

3-3

12 3 4 5 6 7...29

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与MT8920B-1相关器件

型号	品牌	获取价格	描述	数据表
MT8920BC	MITEL	获取价格	ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Acces
MT8920BE	MITEL	获取价格	ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Acces
MT8920BE1	ZARLINK	获取价格	Telecom Circuit, 1-Func, CMOS, PDIP28, 0.600 INCH, LEAD FREE, PLASTIC, MS-011AB, DIP-28
MT8920BP	MITEL	获取价格	ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Acces
MT8920BP1	ZARLINK	获取价格	Telecom Circuit, 1-Func, CMOS, PQCC28, LEAD FREE, PLASTIC, MS-018AB, LCC-28
MT8920BP1	MICROSEMI	获取价格	Telecom Circuit, 1-Func, CMOS, PQCC28, LEAD FREE, PLASTIC, MS-018AB, LCC-28
MT8920BPR	ZARLINK	获取价格	Telecom Circuit, 1-Func, CMOS, PQCC28, PLASTIC, MS-018AB, LCC-28
MT8920BPR1	ZARLINK	获取价格	Telecom Circuit, 1-Func, CMOS, PQCC28, LEAD FREE, PLASTIC, MS-018AB, LCC-28
MT8920BS	MITEL	获取价格	ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Acces
MT8920BS1	ZARLINK	获取价格	Telecom Circuit, 1-Func, CMOS, PDSO28, 0.300 INCH, LEAD FREE, MS-013AE, SOIC-28