Datasheet > IDT72V8981DB

IDT72V8981DB

更新时间： 2024-02-18 04:36:44

品牌	Logo	应用领域
艾迪悌 - IDT		开关
页数	文件大小	规格书
11页	106K
描述
3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128

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中文翻译

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数据手册

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IDT72V8981DB 数据手册

3.3 VOLT TIME SLOT INTERCHANGE

DIGITAL SWITCH

128 x 128

IDT72V8981

outputs,eachofwhichconsistsof32channels(64Kbit/sperchannel)toform

amultiplexed2.048Mb/sstream.

FEATURES:

•

128 x 128 channel non-blocking switch

Serial Telecom Bus Compatible (ST-BUS^®)

4 RX inputs—32 channels at 64 Kbit/s per serial line

4 TX output—32 channels at 64 Kbit/s per serial line

Three-state serial outputs

Microprocessor Interface (8-bit data bus)

3.3V Power Supply

Available in 44-pin Plastic Leaded Chip Carrier (PLCC), and

44-pin Plastic Quad Flatpack (PQFP)

FUNCTIONALDESCRIPTION

AfunctionalblockdiagramoftheIDT72V8981deviceisshownbelow. The

serial streamsoperatecontinuouslyat2.048Mb/sandarearrangedin125µs

wideframeseachcontaining32,8-bitchannels. Fourinput(RX0-3)andfour

output (TX0-3)serialstreamsareprovidedintheIDT72V8981deviceallowing

acomplete128x128channelnon-blockingswitchmatrixtobeconstructed.

The serial interface clock (C4i) for the device is 4.096 MHz.

•

Operating Temperature Range -40°C to +85°C

3.3V I/O with 5V Tolerant Inputs

Thereceivedserialdataisinternallyconvertedtoaparallelformatbythe

onchipserial-to-parallelconvertersandstoredsequentiallyina128-position

DataMemory.Byusinganinternalcounterthatisresetbytheinput8KHzframe

pulse,F0i,theincomingserialdatastreamscanbeframedandsequentially

addressed.

DESCRIPTION:

The IDT72V8981 is a ST-BUS^®compatible digital switch controlled by a

microprocessor. TheIDT72V8981canhandleasmanyas128,64Kbit/sinput

andoutputchannels. Those128channelsaredividedinto4serialinputsand

Datatobeoutputontheserialstreamsmaycomefromtwosources:Data

MemoryorConnectionMemory. TheConnectionMemoryis16bitswideand

FUNCTIONAL BLOCK DIAGRAM

ODE

C4i F0i

VCC GND

Timing

Unit

Output MUX

RX0

TX0

TX1

TX2

TX3

Transmit

Serial Data

Streams

Receive

Serial Data

Streams

RX1

Data

Memory

RX2

RX3

Connection

Memory

Control Register

Microprocessor Interface

5702 drw01

A0/

R/W

D0/

DTA

IDTandtheIDTlogoareregisteredtrademarksofIntegratedDeviceTechnology,Inc. TheST-BUS^isatrademarkofMitelCorp.

AUGUST 2003



DSC-5702/4

12 3 4 5 6 7...11

中文翻译

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与IDT72V8981DB相关器件

型号	品牌	获取价格	描述	数据表
IDT72V8981DBG	IDT	获取价格	Digital Time Switch, PQFP44, 10 X 10 MM, 0.80 MM PITCH, PLASTIC, QFP-44
IDT72V8981J	IDT	获取价格	3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128
IDT72V8981J8	IDT	获取价格	Digital Time Switch, PQCC44, 0.65 X 0.65 INCH, 0.05 INCH PITCH, PLASTIC, LCC-44
IDT72V8985	IDT	获取价格	3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 256 x 256
IDT72V8985DB	IDT	获取价格	3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 256 x 256
IDT72V8985J	IDT	获取价格	3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 256 x 256
IDT72V8985J8	IDT	获取价格	Digital Time Switch, PQCC44, 0.65 X 0.65 INCH, 0.05 INCH PITCH, PLASTIC, LCC-44
IDT72V8985JG	IDT	获取价格	Digital Time Switch, PQCC44, 0.65 X 0.65 INCH, 0.05 INCH PITCH, PLASTIC, LCC-44
IDT72V8985JG8	IDT	获取价格	Digital Time Switch, PQCC44, 0.65 X 0.65 INCH, 0.05 INCH PITCH, PLASTIC, LCC-44
IDT72V8985PA	IDT	获取价格	Digital Time Switch, PDSO48, PLASTIC, TSSOP-48

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