IDT728985DB

更新时间： 2024-11-23 13:08:43

品牌	Logo	应用领域
艾迪悌 - IDT		开关
页数	文件大小	规格书
13页	109K
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中文翻译

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数据手册

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IDT728985DB 数据手册

TIME SLOT INTERCHANGE

DIGITAL SWITCH

256 x 256

IDT728985

andwriteaccess toindividualchannels.As animportantfunctionofadigital

switchis tomaintainsequenceintegrityandminimizethroughputdelay,the

IDT728985isanidealsolutionformostswitchingneeds.

ꢀEATURES:

•

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

5V Power Supply

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

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

44-pin Plastic Quad Flatpack (PQFP) and 40-pin Plastic Dip

(P-DIP)

ꢀUNCTIONALDESCRIPTION

Framesequence,constantthroughputdelay,andguaranteedminimum

delayarehighpriorityrequirementsintoday’sintegrateddataandmultimedia

networks. TheIDT728985provides thesefunctions onaper-channelbasis

usingastandardmicroprocessorcontrolinterface. Eachoftheeightseriallines

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

InProcessorMode,themicroprocessorcanaccesstheinputandoutputtime

slotstocontrolotherdevicessuchasISDNtransceiversandtrunkinterfaces.

SupportingbothGCIandST-BUS^®formats,IDT728985hasincorporatedan

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

synchronization.

DESCRIPTION:

TheIDT728985isaST-BUS^®/GCIcompatibledigitalswitchcontrolledby

amicroprocessor. TheIDT728985canhandleasmanyas256,64Kbit/sinput

andoutputchannels. Those256channelsaredividedinto8serialinputsand

outputs,eachofwhichconsistsof32channels. TheIDT728985providesper-

channelvariableorconstantthroughputdelaymodesandmicroprocessorread

AfunctionalblockdiagramoftheIDT728985deviceisshownonpage1.

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

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

ꢀUNCTIONAL BLOCK DIAGRAM

ODE

C4i

F0i

VCC GND

TX0

TX1

TX2

TX3

TX4

TX5

TX6

TX7

Timing

Unit

RX0

RX1

RX2

RX3

RX4

RX5

RX6

RX7

Output MUX

Receive

Serial Data

Streams

Transmit

Serial Data

Streams

Data

Memory

Connection

Memory

Control Register

Microprocessor Interface

5708 drw01

CCO

A0/

R/W

D0/

DTA

APRIL 2001

2001 Integrated Device Technology, Inc.

DSC-5708/2

12 3 4 5 6 7...13

中文翻译

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与IDT728985DB相关器件

型号	品牌	获取价格	描述	数据表
IDT728985J	IDT	获取价格	Digital Time Switch, PQCC44, 0.650 X 0.650 INCH, 1.27 MM PITCH, PLASTIC, LCC-44
IDT728985J8	IDT	获取价格	Digital Time Switch, PQCC44, 0.650 X 0.650 INCH, 1.27 MM PITCH, PLASTIC, LCC-44
IDT728985JG	IDT	获取价格	Digital Time Switch, PQCC44, 0.650 X 0.650 INCH, 1.27 MM PITCH, PLASTIC, LCC-44
IDT728985JG8	IDT	获取价格	Digital Time Switch, PQCC44, 0.650 X 0.650 INCH, 1.27 MM PITCH, PLASTIC, LCC-44
IDT728985P	IDT	获取价格	Digital Time Switch, PDIP40, 2.050 X 0.600 INCH, 0.100 INCH PITCH, PLASTIC, DIP-40
IDT7290820	IDT	获取价格	TIME SLOT INTERCHANGE DIGITAL SWITCH 2,048 x 2,048
IDT7290820BC	IDT	获取价格	TIME SLOT INTERCHANGE DIGITAL SWITCH 2,048 x 2,048
IDT7290820BCG	IDT	获取价格	Digital Time Switch, PBGA100, 11 X 11 MM, 1 MM PITCH, BGA-100
IDT7290820J	IDT	获取价格	TIME SLOT INTERCHANGE DIGITAL SWITCH 2,048 x 2,048
IDT7290820J8	IDT	获取价格	Digital Time Switch, PQCC84, 1.150 X 1.150 INCH, 1.27 MM PITCH, PLASTIC, LCC-84

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