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參數(shù)資料
| 型號： | IBM42P21SNYAA10 |
| 廠商： | IBM Microeletronics |
| 英文描述： | 2x Fibre Channel Small Form Factor Hot-Pluggable Transceiver(2x光纖通道小外形封裝可帶電插收發(fā)器) |
| 中文描述： | 2倍光纖通道纖巧熱插拔收發(fā)器（2倍光纖通道小外形封裝可帶電插收發(fā)器） |
| 文件頁數(shù)： | 7/34頁 |
| 文件大?。?/td> | 180K |
| 代理商： | IBM42P21SNYAA10 |
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IBM42P21SNYAA10
IBM42P21LNYAA10
2x / 1x Fibre Channel Small Form Factor Hot-Pluggable Transceiver
08/15/00
Page 7 of 31
Operation
Resetting a Laser Fault
Resetting a laser fault by toggling the Tx_Disable input will permit the SFF-PGG-2125-SW/LW to attempt to
power on the laser following a fault condition. Continuous resetting and re-powering of the laser under a hard
fault condition could cause a series of optical pulses with sufficient energy to violate laser safety standards.
To alleviate the possibility of violating laser safety standards, the SFF-PGG-2125-SW/LW will turn off the
laser if a second fault is detected within 25ms of the laser powering on. This lock is cleared during each
power on cycle. Please refer to the timing diagrams below.
Initialization Timings
Fault Condition Recovery Timings
SFF-PGG-2125-SW/LW with Tx_Disable Deasserted
SFF-PGG-2125-SW/LW with Tx_Disable Asserted
t_init
< 300ms
Vcc > 3.15V
Tx_Disable
Optical Transmit
Signal
1
0
Tx_Fault
t_init < 300ms
Vcc > 3.15V
Tx_Disable
Optical Transmit
Signal
Tx_Fault
Occurrence
of transmitter
safety fault
Optical
Power
t_reset
>10
μ
s
Tx_Disable
t_init*
<300ms
*only if the fault is transient
t_reset
>10
μ
s
t_init*
<300ms
*only if the fault is transient
t_fault
<100
μ
s
Occurrence
of transmitter
safety fault
Optical
Power
Tx_Disable
Unsuccessful Recovery from a
Transmitter Safety Fault
Successful Recovery from a
Transmitter Safety Fault
Tx_Fault
Tx_Fault
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