ZHCS810H January 2012 – February 2018 DS125DF410
PRODUCTION DATA.
- 1 特性
- 2 應用
- 3 說明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3 Feature Description
- 7.4 Device Functional Modes
- 7.5
Programming
- 7.5.1 SMBus Strap Observation
- 7.5.2 Device Revision and Device ID
- 7.5.3 Control/Shared Register Reset
- 7.5.4 Interrupt Channel Flag Bits
- 7.5.5 SMBus Master Mode Control Bits
- 7.5.6 Resetting Individual Channels of the Retimer
- 7.5.7 Interrupt Status
- 7.5.8 Overriding the CTLE Boost Setting
- 7.5.9 Overriding the VCO Search Values
- 7.5.10 Overriding the Output Multiplexer
- 7.5.11 Overriding the VCO Divider Selection
- 7.5.12 Using the PRBS Generator
- 7.5.13 Using the Internal Eye Opening Monitor
- 7.5.14 Overriding the DFE Tap Weights and Polarities
- 7.5.15 Enabling Slow Rise/Fall Time on the Output Driver
- 7.5.16 Inverting the Output Polarity
- 7.5.17 Overriding the Figure of Merit for Adaptation
- 7.5.18 Setting the Rate and Subrate for Lock Acquisition
- 7.5.19 Setting the Adaptation/Lock Mode
- 7.5.20 Initiating Adaptation
- 7.5.21 Setting the Reference Enable Mode
- 7.5.22 Overriding the CTLE Settings Used for CTLE Adaptation
- 7.5.23 Setting the Output Differential Voltage
- 7.5.24 Setting the Output De-Emphasis Setting
- 7.6 Register Maps
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機械、封裝和可訂購信息
10.2 Layout Example
To minimize the effects of crosstalk, a 5:1 ratio or greater should be maintained between inter-pair spacing.
Figure 12 depicts different transmission line topologies which can be used in various combinations to achieve the optimal system performance. Impedance discontinuities at the differential via can be minimized or eliminated by increasing the swell around each hole and providing for a low inductance return current path. When the via structure is associated with thick backplane PCB, further optimization such as back drilling is often used to reduce the detrimental high frequency effects of stubs on the signal path.
Figure 12. Different Transmission Line Topologies