Delta-electronics Single Mode SFP Transceiver LCP-1250B4MDRx Manuel d'utilisateur télécharger pdf (Page 8)

DELTA ELECTRONICS, INC.

8 2007/11/29

Rev. 0A

www.deltaww.com

SFP timing parameters for SFP management

Parameter Symbol Min. Max. Unit Note

TX_DISABLE Assert time t_off 10 µsec 1

TX_DISABLE Negate time t_on 1 msec 2

Time to initialize, including

reset of TX_FAULT

t_init 300 msec 3

TX Fault Assert Time t_fault 100 µsec 4

TX_DISABLE to reset t_rest 10 µsec 5

LOS Assert Time t_loss_on 100 µsec 6

LOS Deassert Time t_loss_off 100 µsec 7

Serial ID Clock Rate f_serial_clock 100 kHz

Notes:

1) Time from rising edge of TX_DISABLE to when the optical output falls below 10% of nominal

Time from falling edge of TX_DISABLE to when the modulated optical output rises above 90% of

nominal

From power on or negation of TX_Fault using TX Disable

Time from fault to TX fault on.

Time TX Disable must be held high to reset TX_Fault

6) Time from LOS state to Rx LOS assert

7) Time from non-LOS state to Rx LOS deassert

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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Delta-electronics Single Mode SFP Transceiver LCP-1250B4MDRx Manuel d'utilisateur Page 8