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參數(shù)資料
| 型號： | IBM42F21SNNAA10 |
| 廠商： | IBM Microeletronics |
| 英文描述： | 2x Fibre Channel Small Form Factor PTH Transceiver(2x吉位光纖通道小外形PTH收發(fā)器) |
| 中文描述： | 2倍光纖通道纖巧甲狀旁腺收發(fā)器（2倍吉位光纖通道小外形甲狀旁腺收發(fā)器） |
| 文件頁數(shù)： | 6/24頁 |
| 文件大小： | 210K |
| 代理商： | IBM42F21SNNAA10 |
IBM42F21SNNAA10
IBM42F21LNNAA10
2x / 1x Fibre Channel Small Form Factor PTH Transceiver
IBM42G21SNNAA10
IBM42G21LNNAA10
Page 6 of 23
08/15/00
Operation
Resetting a Laser Fault
Resetting a laser fault by toggling the Tx_Disable input will permit the SFF-PTH-2125-SW/LW-2X5/2X6 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-PTH-2125-SW/LW-2X5/2X6 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
SFF-PTH-2125-SW/LW-2X5/2X6
with Tx_Disable De-asserted
t_init
< 300ms
Vcc > 3.15V
Tx_Disable
Optical Transmit
Signal
1
0
Tx_Fault
Tx_Fault option is only available on 2 X 6
with Tx_Disable Asserted
t_init < 300ms
Vcc > 3.15V
Tx_Disable
Optical Transmit
Signal
Tx_Fault
Tx_Fault option is only available on 2 X 6
SFF-PTH-2125-SW/LW-2X5/2X6
Occurrence
of transmitter
safety fault
Tx_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 option is only available on 2 X 6
Tx_Fault option is only available on 2 X 6
Tx_Fault
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