afct-5715z Avago Technologies, afct-5715z Datasheet - Page 10

• Manufacturer Part Number: afct-5715z
• Description: Families Of Single-mode Small Form Factor Pluggable Sfp Optical Transceivers With Optional Dmi For Gigabit Ethernet 1.25 Gbd
• Manufacturer: Avago Technologies

Table 8. Transceiver Timing Characteristics
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. Time from power on or falling edge of Tx_Disable to when the modulated optical output rises above 90% of nominal.
4. From power on or negation of TX_FAULT using TX_DISABLE.
5. Time TX_DISABLE must be held high to reset the laser fault shutdown circuitry.
6. Time from loss of optical signal to Rx_LOS Assertion.
7. Time from valid optical signal to Rx_LOS De-Assertion.
8. Time from two-wire interface assertion of TX_DISABLE (A2h, byte 110, bit 6) to when the optical output falls below 10% of nominal.
9. Time from two-wire interface de-assertion of TX_DISABLE (A2h, byte 110, bit 6) to when the modulated optical output rises above 90% of
10. Time from fault to two-wire interface TX_FAULT (A2h, byte 110, bit 2) asserted.
11. Time for two-wire interface assertion of Rx_LOS (A2h, byte 110, bit 1) from loss of optical signal.
12. Time for two-wire interface de-assertion of Rx_LOS (A2h, byte 110, bit 1) from presence of valid optical signal.
13. From power on to data ready bit asserted (A2h, byte 110, bit 0). Data ready indicates analog monitoring circuitry is functional.
14. Time from power on until module is ready for data transmission over the serial bus (reads or writes over A0h and A2h).
15. Time from stop bit to completion of a 1-8 byte write command.
Table 9. Transceiver Digital Diagnostic Monitor (Real Time Sense) Characteristics
10
Hardware TX_DISABLE Assert Time
Hardware TX_DISABLE Negate Time
Hardware TX_FAULT Assert Time
Hardware TX_DISABLE to Reset
Hardware RX_LOS Assert Time
Hardware RX_LOS De-Assert Time
Parameter
Time to initialize, including reset of TX_FAULT
Software TX_DISABLE Assert Time
Software TX_DISABLE Negate Time
Software Tx_FAULT Assert Time
Software Rx_LOS Assert Time
Software Rx_LOS De-Assert Time
Analog parameter data ready
Serial bus hardware ready
Serial ID Clock Rate
Write Cycle Time
Parameter
Received Average Optical Input Power Accuracy
Transceiver Internal Temperature Accuracy
Transceiver Internal Supply Voltage Accuracy
Transmitter Laser DC Bias Current Accuracy
Transmitted Average Optical Output Power Accuracy
Measured from falling clock edge after stop bit of write transaction.
nominal.
Symbol
t_off
t_on
t_init
t_fault
t_reset
t_loss_on
t_loss_off
t_off_soft
t_on_soft
t_fault_soft
t_loss_on_soft
t_loss_off_soft
t_data
t_serial
t_write
f_serial_clock
Symbol
I
P
P
T
V
INT
INT
T
R
INT
Min
± 3.0
± 0.1
± 10
± 3.0
± 3.0
Minimum
10
Units
°C
V
%
dB
dB
Maximum Unit
10
1
100
100
100
100
100
100
100
100
1000
10
300
300
400
Notes
Percentage of nominal bias value
Valid from T
Valid over V
Valid from 100 W to 500 W, avg
Valid from 10 W to 500 W avg
µs
ms
ms
µs
µs
µs
ms
ms
ms
ms
ms
ms
ms
ms
kHz
µs
CC
C
= -40 °C to +85 °C
= 3.3 V ± 5%
Note 2
Note 3
Note 4
Note 6
Note 7
Note 10
Note 12
Note 13
Notes
Note 1
Note 5
Note 8
Note 9
Note 11
Note 14
Note 15