Delta Electronics LCP-1250A4FSR Manuel d'utilisateur télécharger pdf (Page 9)

DELTA ELECTRONICS, INC.

9 Nov., 2006

Rev. 0C

www.deltaww.com

SFP timing parameters for SFP management

Parameter Symbol Min. Max. Unit Unit Conditions

TX_DISABLE Assert

time

t_off 10 μsec

Time from rising edge of TX_DISABLE to

when the optical output falls below 10% of

nominal

TX_DISABLE

Negate time

t_on 1 msec

Time from falling edge of TX_DISABLE to

when the modulated optical output rises

above 90% of nominal

Time to initialize,

including reset of

TX_FAULT

t_init 300 msec

From power on or negation of TX_Fault using

TX Disable.

TX Fault Assert

Time

t_fault

100 μsec Time from fault to TX fault on.

TX_DISABLE to

reset

t_rest 10 μsec

Time TX Disable must be held high to 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

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Delta Electronics LCP-1250A4FSR Manuel d'utilisateur Page 9