DELTA ELECTRONICS, INC.
8 2007/11/6
Rev. 0D
www.deltaww.com
SFP timing parameters for SFP management
Parameter Symbol
Min.
Max.
Unit
Unit
Conditions
TX_DISABLE Assert
time
t_off
10
µ
sec
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
µ
sec Time from fault to TX fault on.
TX_DISABLE to
reset
t_rest 10
µ
sec
Time TX Disable must be held high to reset
TX_Fault
LOS Assert Time
t_loss_on
100
µ
sec Time from LOS state to Rx LOS assert
LOS Deassert Time
t_loss_off
100
µ
sec Time from non-LOS state to Rx LOS deassert
Serial ID Clock Rate f_serial_clock
100
kHz
