SFP timing parameters for SFP management

Parameter

 

Symbol

Min.

Max.

Unit

 

 

Unit Conditions

TX_DISABLE Assert

 

 

 

 

Time

from

rising edge

of TX_DISABLE to

t_off

 

10

µsec

when the optical output falls below 10% of

time

 

 

 

 

 

 

 

 

 

 

 

nominal

 

 

 

 

 

 

 

 

 

 

 

 

TX_DISABLE

 

 

 

 

 

Time

from

falling edge

of TX_DISABLE to

 

t_on

 

1

msec

when

the

modulated

optical output rises

Negate time

 

 

 

 

 

 

 

above 90% of nominal

 

 

 

 

 

 

 

 

 

 

Time

to

initialize,

 

 

 

 

From power on or negation of TX_Fault using

including

reset

of

t_init

 

300

msec

 

TX Disable.

 

 

TX_FAULT

 

 

 

 

 

 

 

 

 

 

TX

Fault

Assert

t_fault

 

100

µsec

Time from fault to TX fault on.

Time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TX_DISABLE

to

t_rest

10

 

µsec

Time TX Disable must be held high to reset

reset

 

 

 

 

TX_Fault

 

 

LOS Assert Time

 

t_loss_on

 

100

µsec

Time from LOS state to Rx LOS assert

LOS Deassert Time

t_loss_off

 

100

µsec

Time from non-LOS state to Rx LOS deassert

Serial ID Clock Rate

f_serial_clock

 

100

kHz

 

 

 

 

8

2007/11/6

 

Rev. 0D

DELTA ELECTRONICS, INC.

www.deltaww.com

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Image 8
Delta Electronics LCP-155A4HSRBx SFP timing parameters for SFP management, Parameter Symbol Min Max Unit Unit Conditions