DELTA ELECTRONICS, INC.
7 2008/3/14
Rev. 0B
www.deltaww.com
SFP timing parameters for SFP management
Parameter
Symbol
Min.
Max.
Unit
Note
TX_DISABLE Assert time
t_off
10
μ
sec 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
μ
sec
4
TX_DISABLE to reset
t_rest
10
μ
sec 5
LOS Assert Time
t_loss_on
100
μ
sec
6
LOS Deassert Time
t_loss_off
100
μ
sec 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
