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參數資料
| 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： | 3/24頁 |
| 文件大?。?/td> | 210K |
| 代理商： | IBM42F21SNNAA10 |
IBM42G21SNNAA10
IBM42G21LNNAA10
IBM42F21SNNAA10
IBM42F21LNNAA10
2x / 1x Fibre Channel Small Form Factor PTH Transceiver
08/15/00
Page 3 of 23
Transmit Section
The input, an AC coupled differential data stream from the host, enters the AC Modulation section of the laser
driver circuitry where it modulates the output optical intensity of a semiconductor laser. The DC Drive main-
tains the laser at the correct preset power level. In addition, safety circuits in the DC Drive will shut off the
laser if a fault is detected. The transceiver provides the AC coupling for the +Tx/-Tx lines.No AC coupling
capacitors are required on the host card for proper operation.
Receive Section
The incoming modulated optical signal is converted to an electrical signal by the photoreceiver. This electrical
signal is then amplified and converted to a differential serial output data stream and delivered to the host. A
transition detector detects sufficient AC level of modulated light entering the photoreceiver. This signal is pro-
vided to the host as a signal detect status line. The transceiver provides the AC coupling for the +Rx/-Rx
lines.No AC coupling capacitors are required on the host card for proper operation.
Block Diagram
Post-amp
Signal Detect
and
+Tx_DAT
+Rx_DAT
Fiber
Input
Photoreceiver
Output
Fiber
Fault
Sense
-Rx_DAT
Rx_SD
-Tx_DAT
Laser
AC Modulation
Tx_Disable
Transmit Section
Receive Section
Optical
Electrical
DC Drive
and
Safety Control
(Only available on 2 X 6)
Tx_Fault
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