电子说
在高速数据通信领域,光收发器扮演着至关重要的角色。今天我们要深入探讨的是Finisar公司的FTLX1412D3BCL 10Gb/s 10km Datacom XFP光收发器,它具备诸多优秀特性,适用于多种高速数据通信场景。
文件下载:FTLX1412D3BCL.pdf
该收发器适用于10GBASE - LR/LW 10G以太网和1200 - SM - LL - L 10G光纤通道等高速数据传输场景。如果需要SONET/SDH合规性,请选择Finisar的FTLX1412M3BCL型号。
| Pin | Logic | Symbol | Name/Description | Ref. |
|---|---|---|---|---|
| 1 | GND | Module Ground | 1 | |
| 2 | VEE5 | Optional –5.2 Power Supply – Not required | ||
| 3 | LVTTL - I | Mod - Desel | Module De - select; When held low allows the module to respond to 2 - wire serial interface commands | |
| 4 | LVTTL - O | Interrupt | Interrupt (bar); Indicates presence of an important condition which can be read over the serial 2 - wire interface | 2 |
| 5 | LVTTL - I | TX_DIS | Transmitter Disable; Transmitter laser source turned off | |
| 6 | VCC5 | +5 Power Supply – Not required | ||
| 7 | GND | Module Ground | 1 | |
| 8 | VCC3 | +3.3V Power Supply | ||
| 9 | VCC3 | +3.3V Power Supply | ||
| 10 | LVTTL - I | SCL | Serial 2 - wire interface clock | 2 |
| 11 | LVTTL - I/O | SDA | Serial 2 - wire interface data line | 2 |
| 12 | LVTTL - O | Mod_Abs | Module Absent; Indicates module is not present. Grounded in the module. | 2 |
| 13 | LVTTL - O | Mod_NR | Module Not Ready; Finisar defines it as a logical OR between RX_LOS and Loss of Lock in TX/RX. | 2 |
| 14 | LVTTL - O | RX_LOS | Receiver Loss of Signal indicator | 2 |
| 15 | GND | Module Ground | 1 | |
| 16 | GND | Module Ground | 1 | |
| 17 | CML - O | RD - | Receiver inverted data output | |
| 18 | CML - O | RD + | Receiver non - inverted data output | |
| 19 | GND | Module Ground | 1 | |
| 20 | VCC2 | +1.8V Power Supply – Not required | ||
| 21 | LVTTL - I | P_Down/RST | Power Down; When high, places the module in the low power stand - by mode and on the falling edge of P_Down initiates a module reset | |
| Reset; The falling edge initiates a complete reset of the module including the 2 - wire serial interface, equivalent to a power cycle. | ||||
| 22 | VCC2 | +1.8V Power Supply – Not required | ||
| 23 | GND | Module Ground | 1 | |
| 24 | PECL - I | RefCLK + | Reference Clock non - inverted input, AC coupled on the host board – Not required | 3 |
| 25 | PECL - I | RefCLK - | Reference Clock inverted input, AC coupled on the host board – Not required | 3 |
| 26 | GND | Module Ground | 1 | |
| 27 | GND | Module Ground | 1 | |
| 28 | CML - I | TD - | Transmitter inverted data input | |
| 29 | CML - I | TD + | Transmitter non - inverted data input | |
| 30 | GND | Module Ground | 1 |
需要注意的是,模块电路地与模块底盘地在模块内部是隔离的;部分引脚为开集电极,需要在主板上用4.7k - 10k欧姆的电阻上拉到3.15V至3.6V之间的电压;该型号不需要参考时钟输入,若存在也会被忽略。
| 该收发器为1类激光产品,符合以下标准: | Feature | Agency | Standard | Certificate Number |
|---|---|---|---|---|
| Laser Eye Safety | FDA/CDRH | CDRH 21 CFR 1040 and Laser Notice 50 | 9210176 - 77 | |
| Laser Eye Safety | TÜV | EN 60825 - 1: 1994+A11:1996+A2:2001 IEC 60825 - 1: 1993+A1:1997+A2:2001 IEC 60825 - 2: 2000, Edition 2 |
72070747 | |
| Electrical Safety | TÜV | EN 60950 | 72070747 | |
| Electrical Safety | UL/CSA | 1439230 |
该收发器通过2线串行接口提供数字诊断功能,可实时访问收发器温度、激光偏置电流、发射光功率、接收光功率和收发器电源电压等参数。同时,它还具备报警和警告标志系统,当特定操作参数超出工厂设定的正常范围时,可提醒用户。这些信息由收发器内部的数字诊断收发器控制器(DDTC)监测和报告。
Finisar的XFP收发器符合XFP多源协议(MSA)定义的尺寸标准。此外,文档还提供了XFP主机板机械布局和推荐的面板设计的尺寸信息。
Finisar的FTLX1412D3BCL光收发器在高速数据通信领域具有出色的性能和丰富的功能。其低功耗、宽温度范围、热插拔设计以及数字诊断功能等特点,使其成为10G以太网和光纤通道等应用的理想选择。电子工程师在进行相关设计时,可根据这些特性和规格进行合理的选型和布局。大家在实际应用中是否遇到过类似光收发器的问题呢?欢迎在评论区分享交流。
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