Datasheet > IDT72V8985

IDT72V8985

更新时间： 2024-09-25 21:54:31

品牌	Logo	应用领域
艾迪悌 - IDT		开关
页数	文件大小	规格书
14页	136K
描述
3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 256 x 256

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中文翻译

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数据手册

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IDT72V8985 数据手册

3.3 VOLT TIME SLOT INTERCHANGE

DIGITAL SWITCH

256 x 256

IDT72V8985

andwriteaccesstoindividualchannels. Asanimportantfunctionofadigital

switchis tomaintainsequenceintegrityandminimizethroughputdelay, the

IDT72V8985isanidealsolutionformostswitchingneeds.

FEATURES:

•

256 x 256 channel non-blocking switch

Automatic signal identification (ST-BUS^®, GCI)

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

8 TX outputs—32 channels at 64 Kbit/s per serial line

Three-state serial outputs

Microprocessor Interface (8-bit data bus)

Frame Integrity for data applications

3.3V Power Supply

FUNCTIONALDESCRIPTION

Framesequence,constantthroughputdelay,andguaranteedminimum

delayarehighpriorityrequirementsintoday’sintegrateddataandmultimedia

networks. TheIDT72V8985providesthesefunctionsonaper-channelbasis

usingastandardmicroprocessorcontrolinterface. Eachoftheeightseriallines

is designed to switch 64 Kbit/s PCM or N x 64 Kbit/s data.

InProcessorMode,themicroprocessorcanaccesstheinputandoutputtime

slotstocontrolotherdevicessuchasISDNtransceiversandtrunkinterfaces.

SupportingbothGCIandST-BUS^®formats,IDT72V8985hasincorporatedan

internal circuit to automatically identify the polarity and format of the frame

synchronization.

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

48-pin Small Shrink Outline Package (SSOP), and 44-pin Plastic

Quad Flatpack (PQFP)

•

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

3.3V I/O with 5V Tolerant Inputs

AfunctionalblockdiagramoftheIDT72V8985deviceisshownonpage1.

The serial streams operate continuously at 2.048 Mb/s and are arranged in

125µswideframeseachcontaining32,8-bitchannels. Eightinput(RX0-7)and

eight output (TX0-7) serial streams are provided in the IDT72V8985 device

allowing a complete 256 x 256 channel non-blocking switch matrix to be

constructed. Theserialinterfaceclockforthedeviceis 4.096MHz.

DESCRIPTION:

TheIDT72V8985isaST-BUS^®/GCIcompatibledigitalswitchcontrolledby

amicroprocessor. TheIDT72V8985canhandleasmanyas256,64Kbit/sinput

andoutputchannels. Those256channelsaredividedinto8serialinputsand

outputs,eachofwhichconsistsof32channels.TheIDT72V8985providesper-

channelvariableorconstantthroughputdelaymodesandmicroprocessorread

FUNCTIONAL BLOCK DIAGRAM

RESET⁽¹⁾

ODE

C4i F0i

VCC GND

TX0

TX1

TX2

TX3

TX4

TX5

TX6

TX7

Timing

Unit

RX0

Output MUX

RX1

RX2

Receive

Serial Data

Streams

Transmit

Serial Data

Streams

RX3

Data

Memory

RX4

RX5

RX6

RX7

Connection

Memory

Control Register

Microprocessor Interface

5707 drw01

CCO

A0/

R/W

D0/

DTA

NOTE:

1. The RESET Input is only provided on the SSOP package.

IDTandtheIDTlogoareregisteredtrademarksofIntegratedDeviceTechnology,Inc. TheST-BUS^isatrademarkofMitelCorp.

AUGUST 2003

DSC-5707/5

12 3 4 5 6 7...14

中文翻译

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与IDT72V8985相关器件

型号	品牌	获取价格	描述	数据表
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
IDT72V8985PA8	IDT	获取价格	Digital Time Switch, PDSO48, PLASTIC, TSSOP-48
IDT72V8985PV	IDT	获取价格	3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 256 x 256
IDT72V8985PVG	IDT	获取价格	Digital Time Switch, PDSO48, 0.625 X 0.295 INCH, 0.025 INCH PITCH, SSOP-48
IDT72V8988	IDT	获取价格	3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 128 x 128

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