- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄382543 > SPFBFT00303 (Avago Technologies Ltd.) Optical Bidirectional Transceiver for byteflight PDF資料下載
參數(shù)資料
| 型號(hào)： | SPFBFT00303 |
| 廠(chǎng)商： | Avago Technologies Ltd. |
| 英文描述： | Optical Bidirectional Transceiver for byteflight |
| 中文描述： | 光纖雙向收發(fā)器的byteflight |
| 文件頁(yè)數(shù)： | 7/11頁(yè) |
| 文件大?。?/td> | 251K |
| 代理商： | SPFBFT00303 |
7
Mode control
Themodecontrolchecksandevaluatesthesignalsofthe
timerunitandthepower-onsignal.Thefollowingactions
aretriggeredondependenceoftheresultoftheevalua-
tion:
Power-On
Whentheoperatingvoltageisapplied,aPONsignal
isgeneratedinternally.Thisresetsallfunctionalunits
andnormalmodeistakenbytheIC.Thealarmoutput
isinactive.
A Power-On signal is generated at each raising of
VDD2.Moreover,aPower-Onsignaliscreatedwhen
thepowersupplygoesinthecontrolledmodeupto
VDD1overridingathresholdof7V.Theinternalreset
signal is created by prolongation of the Power-On
signalwith3,4ms.DOandLEDOarelockedduringthe
reset.
Syncpulse
Innormalmode,thesyncpulsesimplypassesthrough
totheoutput.Ifanalarmpulsehaspreviouslybeen
identified,thealarmconditionisclearedandthealarm
outputisswitchedoff.
Alarmpulse
In normal mode, after an alarm pulse has been
identified, the alarm condition is accepted and the
alarmoutputisswitchedon.Iffurtheralarmpulses
areidentified,thealarmconditionissustained.Itis
possible to clear the alarm condition by receiving
a valid sync pulse or by PON or by reached sleep
mode or if continuous light is identified. In the
alarmcondition,datatransfertakesplaceexactlyas
in normal mode. AfterWake-up or PON the Alarm-
Outputisactivatednotbeforetherecognisingofthe
firstSync-Pulse.
Continuouslight
If continuous light is identified on the bus (light
duration > continuous light on time), the electrical
outputDOisblockedinordertoavoidablockadeof
theentirebus.Anexistingalarmconditioniscleared.
The block for DO is cleared if a valid sync or alarm
pulseisidentifiedontheelectricaloropticalinputs
andifthereisnocontinuouslightatthereceiverany
more.Continuouslightcanonlybeidentifiedbythe
opticalreceiver.
Sleep-Mode and Wake-up
Afterthetimet
sl
.theIC/circuitchangeshisinternalstatus
tothesleepmodeifnolightispresentandalsoifcontin-
uouslightispresent.Inthesleepmode,onlyaveryslow
receiverandthewake-updetectorareactive,inorderto
achieveverylowpowerconsumption.
The receiving diode integrates signals at the optical
input. If the wake-up level is exceeded, the wake-up
detectoractivatesthechip.Forwake-upviaaopticalway,
continuouslyalternatingdark/brightpulsesarenecessary
forthedurationoft
wu
.Thetimingofthesepulsehasto
beaccordingthespecunderchapterBasicSpecification
(parameter:brightphasewake-upimpulse,darkphase
wake-upimpulse).
Thewake-upsignalhastheeffectofaresetandisalso
prolongedby3,4msinordertogivetheanaloguecom-
ponentsenoughtimeforswitchingon.Thistime(3,4ms)
iscontainedintwu.Immediatelyafterwakeupthecon-
tinuouslightrecognitionisblocked.Therehavetobeat
least8pulsesrecognisedattheopticalinputtoactivate
thecontinuouslightrecognitionagain.Thisistoavoidan
incorrectcontinuouslightrecognitionduringthewake-
upphase.
An immediate wake-up also occurs when a H/L flank
appearsatDI.PulsesatDIappearatonceatLEDO(only
ICinternaldelay).Fortheopticalpaththeresetprolon-
gationisvalidatwake-upviaDI.Duetothetransient
responseoftheIC,thefirstdatabits,whicharetransferred
afteractivation,maybeincorrect.
Sy nc
Sy nc
Alarm
Alarm
Sy nc
opt. Bus
Alarmausgang
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SPFEIM100_G | Fiber Optic Transceiver For Fast Ethernet |
| SPG | SELECTABLE-OUTPUT CRYSTAL OSCILLATOR |
| SPT5230 | 10-BIT, 36 MWPS TRIPLE VIDEO DAC |
| SPT5230SCT | 10-BIT, 36 MWPS TRIPLE VIDEO DAC |
| SPT5240 | 10-bit, 400 MWPS Current Output Digital-to-Analog Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SPFBFT302 | 制造商:INFINEON 制造商全稱(chēng):Infineon Technologies AG 功能描述:Optical Bidirectional Transceiver for byteflight |
| SPFC301 | 制造商:MA-COM 制造商全稱(chēng):M/A-COM Technology Solutions, Inc. 功能描述:Power Factor Correction Coils (Three Phase) |
| SPFC302 | 制造商:MA-COM 制造商全稱(chēng):M/A-COM Technology Solutions, Inc. 功能描述:Power Factor Correction Coils (Three Phase) |
| SPFC303 | 制造商:MA-COM 制造商全稱(chēng):M/A-COM Technology Solutions, Inc. 功能描述:Power Factor Correction Coils (Three Phase) |
| SPFC304 | 制造商:MA-COM 制造商全稱(chēng):M/A-COM Technology Solutions, Inc. 功能描述:Power Factor Correction Coils (Three Phase) |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。