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DELTA ELECTRONICS, INC.
8 2007/10/23
Rev.0 B
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
2)
Time from falling edge of TX_DISABLE to when the modulated optical output rises above 90% of
nominal
3)
From power on or negation of TX_Fault using TX Disable
4)
Time from fault to TX fault on.
5)
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