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參數(shù)資料
| 型號： | TR137FA-0D30S |
| 英文描述： | Optoelectronic |
| 中文描述： | 光電 |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 209K |
| 代理商： | TR137FA-0D30S |
8
SFP transceiver power on initialization procedure, TX_DISABLE negated.
During power on of the SFP transceiver, TX_FAULT may be asserted (High) as soon
as power supply voltages are within specification. For transceiver initialization with
TX_DISABLE negated, TX_FAULT shall be negated when the transmitter safety
circuitry has detected that the transmitter is operating in its normal state. If a
transmitter fault has not occurred, TX_FAULT shall be negated within a period t_init
from the time that VCCT exceeds the specified minimum operating voltage. If
TX_FAULT remains asserted beyond the period t_init, the host may assume that a
transmission fault has been detected by the transceiver. The power on initialization
timing for a transceiver with TX_DISABLE negated is shown in Figure 3.
Figure 3. Power on initialization of SFP transceivers, Tx Disable negated
SFP transceiver power on initialization procedure, TX_DISABLE asserted.
For SFP transceiver power on initialization with TX_DISABLE asserted, the state of
TX_FAULT is not defined while TX_DISABLE is asserted. After TX_DISABLE is
negated, TX_FAULT may be asserted while safety circuit initialization is performed.
TX_FAULT shall be negated when the transmitter safety circuitry has detected that
the transmitter is operating in its normal state. If a transmitter fault has not occurred,
TX_FAULT shall be negated within a period t_init from the time that TX_DISABLE is
negated. If TX_FAULT remains asserted beyond the period t_init, the host may
assume that a transmission fault has been detected by the transceiver. The power on
initialization timing for a SFP transceiver with TX_DISABLE asserted is shown in
Figure 4.
Figure 4. Power on initialization of SFP, Tx Disable asserted
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