10

MUlTIPROTOCOl XFP OPTICAl TRANSCEIvER

—1550 NM FOR UP TO 40 KM REACH

Parameter

Symbol

Min

Max

Unit

Notes

Total non-EQJ jitter

0.41

UI(p-p)

Total jitter less ISI

Total jitter

TJ

0.61

UI(p-p)

Eye mask

X1

0.305

UI

Mask coordinate X1=0.205 if total non-DDJ

is measured

Eye mask

Y1

60

mV

Eye mask

Y2

410

mV

50 mV is allocated for multiple reflections

Deterministic jitter

DJ

0.18

UI(p-p)

Includes jitter transferred from the optical receiver

during any valid operational input condition.

Total jitter

TJ

0.34

UI(p-p)

Includes jitter transferred from the optical receiver

during any valid operational input condition.

Eye mask

X1

0.17

UI

Eye mask

X2

0.42

UI

Eye mask

Y1

170

mV

Eye mask

Y2

425

mV

Telecommoduleopticaltransmitterandreceiverjitter(detailedspecificationinXFPMSAINF8077iRev.4.5andGR-253-CORE

JittertransferbandwidthBW

8

MHz

Sinusoidal Jitter Tolerance Mask

Jitter peaking

1

dB

Frequency >120 KHz

Transmitter jitter generation

0.3

20 KHz to 80 MHz

0.1

4 MHz to 80 MHz

Jittertransferbandwidth BW

8

MHz

detailed in IEEE 802.3-2005 Clause 52

Jitter peaking

1

dB

Frequency >50 KHz

1. Specifications are applicable to all Part Numbers listed in Section 3.4.

2. Specifications are applicable to SONET / SDH compliant Part Numbers listed in Section 3.4 only.

3.6

Jitter Specifications

Parameter

Symbol

Min

Max

Unit

Notes

TX_DIS assert time

t_off

10

µsec

Rising edge of TX_DIS to fall of output signal below

10% of nominal

TX_DIS negate time

t_on

2

msec

Falling edge of TX_DIS to rise of output signal above

90% of nominal

Time to initialize

t_init

300

msec

From power on or from falling edge of P_Down/RST

Interrupt assert delay

Interrupt_on

200

msec

From occurrence of the condition triggering Interrupt.

Interrupt negate delay

Interrupt_off

500

µsec

From clear on read Interrupt flags

P_Down/RST assert delay

P_Down/RST_on

100

µsec

From power down initiation

Mod_NR assert delay

Mod_NR_on

1

msec

From occurrence of fault to assertion of Mod_NR

Mod_NR negate delay

Mod_NR_off

1

msec

From clearance of signal to negation of Mod_NR

P-Down reset time

10

µsec

Min. length of P-Down assert to initiate reset

RX_LOS assert delay

t_loss_on

100

µsec

From Occurrence of loss of signal to assertion of RX_LOS

RX_LOS negate delay

t_loss_off

100

µsec

From Occurrence of return of signal to negation of RX_LOS

Note:

Two-wire serial bus timing is described in Chapter 4 of XFP MSA INF8077i Rev. 4.5.

3.7

Timing Requirement of Control and Status I/O