Gennum2010Ddatasheet资源-CSDN文库

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### Gennum GN2010D Dual-CDR Multi-Rate Transceiver with DML Driver 数据手册解析 #### 一、概述 Gennum GN2010D是一款集成双向时钟数据恢复(CDR)、DFB/FP激光驱动器以及限幅放大器的高性能收发器芯片，适用于XFP和SFP+ SONET、10GBase-LR以太网及8.5Gb/s光纤通道应用。该设备具有高度集成性、低功耗、小尺寸的特点，非常适合用于小型封装的光学模块。 #### 二、特性详解 1. **双通道CDR支持多种速率**：GN2010D支持8.5Gb/s、9.95-11.3Gb/s以及10.3-11.7Gb/s的参考自由操作模式，这意味着它可以适应不同的传输速率需求，无需外部参考信号即可稳定工作。 2. **集成DFB/FP激光驱动器**：内置的DFB（分布反馈）或FP（法布里-珀罗）激光驱动器能够为激光器提供稳定的电流控制，确保光信号的高质量传输。 3. **高灵敏度限幅放大器**：集成了限幅放大器，其灵敏度低于10mV，能够在接收端有效地将微弱信号放大并恢复到适当的电平。 4. **数字控制接口**：通过I²C或SPI接口进行数字控制，使得配置和调整变得更加方便灵活。 5. **可编程抖动传递带宽**：允许用户根据实际应用需求调整抖动特性，从而优化信号质量。 6. **片上自动功率控制(APC)回路**：集成的APC功能确保激光器输出功率保持在一个恒定水平，即使环境条件变化也能保持稳定的性能。 7. **双向环回功能**：支持发送和接收方向的环回测试，便于进行系统调试和故障排除。 8. **极性和输出静音可调**：在发送和接收方向均提供了极性反转和输出静音的功能，有助于提高系统的灵活性和兼容性。 9. **可编程输出去加重**：通过调整输出信号的频率响应，减少远距离传输中的信号失真。 10. **眼图监测**：集成的使命模式眼图监测功能可以帮助用户实时监控信号质量。 11. **伪随机比特序列(PRBS)生成与检测**：支持PRBS生成和检测功能，用于验证数据链路的完整性。 12. **可编程限幅放大器均衡**：允许用户根据接收信号的质量调整放大器的均衡参数。 13. **可编程发射输入均衡**：通过对发射信号进行预补偿来改善信号质量。 14. **可编程输入切片级调整**：可以根据需要调整输入信号的阈值。 15. **可编程LOS阈值和滞回**：可以设定丢失信号(LOS)的检测阈值和滞回值，确保准确地识别链路状态。 16. **可编程采样相位调整**：通过调整采样时钟的相位，优化信号捕获的精度。 17. **可编程TX故障信号**：当发生传输故障时，可以发出指示信号以便于快速定位问题。 18. **集成模拟至数字转换器**：提供对供电电压、芯片温度、激光偏置电流和发射光功率等关键参数的数字化诊断信息。 19. **单电源供电**：采用单一3.3V电源供电，电压范围为+5%/-15%，简化了电源管理设计。 20. **低功耗**：典型功耗为845mW，激光驱动电流为45/45mA。 21. **集成激光安全特性**：内置激光安全功能，保障使用者的安全。 22. **封装形式**：采用5x5mm 32引脚QFN封装，紧凑且易于集成。 23. **工作温度范围**：支持-40°C至100°C的工作温度范围，适应广泛的环境条件。 #### 三、应用场景 1. **XFP和SFP+ 10Gb/s SONET光收发器**：适用于高速数据通信网络中的SONET/SDH标准传输。 2. **XFP和SFP+ 10GBase-LR以太网光收发器**：用于10Gbps以太网的长距离传输，支持IEEE 802.3ae标准。 3. **XFP和SFP+ 长距离8.5Gb/s光纤通道收发器**：适用于高速存储区域网络(SAN)中的光纤通道传输。 #### 四、总体描述 GN2010D是一种集成了双向时钟数据恢复(CDR)、DFB/FP激光驱动器和限幅放大器的集成电路。在发送路径中，包含可选的输入均衡、多速率Tx CDR和DFB激光驱动器；在接收路径中，则由可编程均衡的限幅放大器、多速率Rx CDR和输出去加重组成。这两个方向都提供了高度可配置的眼图整形功能，以实现最佳的电气和光学输出。这些特性使GN2010D成为一种理想的解决方案，特别适合应用于要求高性能和小尺寸的小型光学模块中。

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1 of 102

Proprietary & Confidential

GN2010D Dual-CDR Multi-Rate Transceiver with DML

Driver

Data Sheet

51491 - 2 December 2010

GN2010D Dual-CDR Multi-Rate Transceiver with DML Driver

www.gennum.com

Features

• Dual CDR with 8.5Gb/s, 9.95-11.3Gb/s and

10.3-11.7Gb/s reference-free operation

• Integrated DFB/FP laser driver

• Integrated limiting amplifier with sensitivity less than

10mV

• Digital control through I

C or SPI interface

• Programmable Jitter Transfer bandwidth

• On-chip Automatic Power Control (APC) loop

• Bi-directional loopback

• Polarity invert and output mute available in both

transmit and receive directions

•Programmable output de-emphasis

• Mission-mode eye monitor

• PRBS Generator and Checker

• Programmable Limiting Amplifier Equalization

• Programmable Transmit Input Equalization

•Programmable Input Slice Level Adjust

• Programmable LOS with adjustable threshold and

hysteresis

• Programmable Sampling Phase Adjust

• Programmable Tx Fault signalling

• Integrated analog to digital converter, which provides

access to digital diagnostic information on supply

voltage, die temperature, laser bias current, and

transmit optical power

• Single 3.3V supply (+5% / - 15%)

• Power dissipation:

 845mW GN2010D typ, 45/45mA bias/mod

• Integrated laser safety features

• 5x5 32-pin QFN package

• -40°C to 100°C case operation

Applications

• XFP & SFP+ 10Gb/s SONET optical transceivers

• XFP & SFP+ 10GBase-LR optical transceivers

• XFP & SFP+ long-reach 8.5Gb/s Fibre Channel

transceivers

General Description

The GN2010D is an integrated bi-directional CDR, DFB/FP

laser driver and limiting amplifier for XFP & SFP+ SONET,

10GBase-LR Ethernet and 8.5Gb/s Fibre Channel

applications. It is a highly-integrated, low-power,

small-footprint device, that is ideal for small form factor

optical modules.

The transmit path consists of optional input equalization, a

multi-rate Tx CDR, and a DFB laser driver. The receive path

is comprised of a limiting amplifier with programmable

equalization, a multi-rate Rx CDR, and output de-emphasis.

Both transmit and receive directions offer highly

configurable eye shaping features, which allow for optimal

electrical and optical outputs. Both directions also offer the

option for polarity-invert, loopback and output mute.

The GN2010D has an integrated analog to digital converter,

which through the serial interface, provides digital

diagnostic information on supply voltage, die temperature,

laser bias current, and transmit optical power. The

GN2010D is configurable for multi-rate operation. The

GN2010D also offers integrated laser safety features.

By integrating the laser driver, the GN2010D offers an

extremely low-power solution for DML based optical

modules. It consumes only 845mW typical from a single

3.3V supply, with the laser driver biased at 45mA bias

current and 45mA modulation current.

The GN2010D device is packaged in a small-outline 5mm ×

5mm 32-pin, high-frequency QFN package with exposed

pad. The GN2010D is Pb-free, and the encapsulation

compound does not contain halogenated flame retardant.

This component and all homogeneous sub-components are

RoHS compliant.

WINTOP.NDA

GN2010D Dual-CDR Multi-rate Transceiver with DML

Driver

Data Sheet

51491 - 2 December 2010

3 of 102

Proprietary & Confidential

Revision History

Contents

Features.................................................................................................................................................................1

Applications.........................................................................................................................................................1

General Description..........................................................................................................................................1

DFB Laser Driver Features..............................................................................................................................2

1. Pin Out...............................................................................................................................................................6

1.1 Pin Assignment ..................................................................................................................................6

1.2 Pin Description ..................................................................................................................................7

2. Electrical Characteristics ............................................................................................................................9

2.1 Absolute Maximum Ratings ..........................................................................................................9

2.2 DC Electrical Characteristics ........................................................................................................9

2.2.1 Power Dissipation.............................................................................................................. 11

2.2.2 Power Features................................................................................................................... 12

2.3 AC Electrical Characteristics ..................................................................................................... 13

3. Detailed Description.................................................................................................................................. 17

3.1 Multirate CDR Functionality ...................................................................................................... 17

3.1.1 Auto-Rate Detect for Fibre Channel & Retimer Bypass........................................ 18

Version ECR Data Changes and / or Modifications

2 155473 December

2010

Added section 3.9.1 Reset State During Power-up

(PCN #56316). Changed MSL rating to 3 in

Packaging Data.

1 154562 August 2010 Converted to Data Sheet. Updates throughout

entire document. Corrections to Table 3-9: PRBS

Generator/Checker Configuration and 3.7.1.5 ADC

Transfer Functions for Each Source.

0 154446 July 2010 Converted to Preliminary Data Sheet. Updates to

power consumption and throughout the Electrical

Characteristics tables.

D 153897 April 2010 Updates to Appendix: Register Map and related

sections, 3.5.1 Receive Loss of Signal (LOS) and

3.5.2 Transmit Loss of Signal. Addition of 3.4 Laser

Driver, Table 3-9: PRBS Generator/Checker

Configuration, 3.7.1 Analog to Digital Converter

(ADC), 3.9 Device Reset and Section 6.

Input/Output Equivalent Circuits.

C 152845 October 2009 Updates throughout entire document.

B 152657 September

2009

Updates throughout entire document.

A 150776 October 2008 New document.

WINTOP.NDA

GN2010D Dual-CDR Multi-rate Transceiver with DML

Driver

Data Sheet

51491 - 2 December 2010

4 of 102

Proprietary & Confidential

3.2 Receive Path .................................................................................................................................... 19

3.2.1 Integrated Limiting Amplifier ....................................................................................... 19

3.2.2 Slice Level Adjust............................................................................................................... 19

3.2.3 Receive Equalization........................................................................................................ 21

3.2.4 Rx PLL Variable Loop Bandwidth ................................................................................ 22

3.2.5 Rx CDR Sampling Phase Adjustment.......................................................................... 22

3.2.6 Rx CDR Input Jitter Tolerance....................................................................................... 23

3.2.7 De-emphasis Driver with Auto-Mute......................................................................... 25

3.2.8 Output Polarity Invert...................................................................................................... 26

3.3 Transmit Path .................................................................................................................................. 26

3.3.1 Equalizer............................................................................................................................... 27

3.3.2 Equalizer Phase Adjust for Jitter Optimization ....................................................... 27

3.3.3 Tx PLL Variable Loop Bandwidth................................................................................. 27

3.4 Laser Driver ..................................................................................................................................... 28

3.4.1 DML Driver .......................................................................................................................... 28

3.4.2 Laser Driver Bias Current ............................................................................................... 30

3.4.3 Automatic Power Control Loop .................................................................................... 31

3.5 Status Indicators ............................................................................................................................ 33

3.5.1 Receive Loss of Signal (LOS)........................................................................................... 33

3.5.2 Transmit Loss of Signal.................................................................................................... 39

3.5.3 Loss of Lock.......................................................................................................................... 41

3.5.4 MODNR - Module Not Ready ........................................................................................ 41

3.6 Test Features ................................................................................................................................... 42

3.6.1 PRBS Generator and Checker........................................................................................ 42

3.6.2 Loopback .............................................................................................................................. 47

3.6.3 Eye Monitor & Peak Detector......................................................................................... 49

3.7 Digital Diagnostics ........................................................................................................................ 51

3.7.1 Analog to Digital Converter (ADC) .............................................................................. 51

3.8 Power-Down Options .................................................................................................................. 65

3.9 Device Reset .................................................................................................................................... 68

3.9.1 Reset State During Power-up......................................................................................... 68

3.9.2 RESET

Timing...................................................................................................................... 69

3.9.3 I/O and Register States During and After Reset ...................................................... 70

3.10 Digital Control Interface ........................................................................................................... 71

3.10.1 I

C Host Interface Mode................................................................................................ 71

3.10.2 SPI Host Interface Mode................................................................................................ 73

3.10.3 Digital I/O (Schmitt Trigger)......................................................................................... 75

4. Typical Application Schematic.............................................................................................................. 76

4.1 Power Supply Filter Recommendations ................................................................................ 77

4.2 Power Supply Domains ............................................................................................................... 77

5. Layout Considerations.............................................................................................................................. 78