SNLS398H
January 2012 – February 2018
DS125DF410
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Typical Application Diagram
4
Revision History
5
Pin Configuration and Functions
Pin Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Device Data Path Operation
7.3.2
Signal Detect
7.3.3
CTLE
7.3.4
DFE
7.3.5
Clock and Data Recovery
7.3.6
Output Driver
7.3.7
Device Configuration
7.3.7.1
Rate and Subrate Setting
7.4
Device Functional Modes
7.4.1
SMBus Master Mode and SMBus Slave Mode
7.4.2
Address Lines <ADDR_[3:0]>
7.4.3
SDA and SDC
7.4.4
Standards-Based Modes
7.4.4.1
Ref_mode 3 Mode (Reference Clock Required)
7.4.4.2
False Lock Detector Setting
7.4.4.3
Reference Clock In
7.4.4.4
Reference Clock Out
7.4.4.5
Driver Output Voltage
7.4.4.6
Driver Output De-Emphasis
7.4.4.7
Driver Output Rise/Fall Time
7.4.4.8
INT
7.4.4.9
LOCK_3, LOCK_2, LOCK_1, and LOCK_0
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
7.6.1
Register Information
7.6.2
Bit Fields in the Register Set
7.6.3
Writing to and Reading from the Control/Shared Registers
7.6.4
Channel Select Register
7.6.5
Reading to and Writing from the Channel Registers
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
Trademarks
11.3
Electrostatic Discharge Caution
11.4
Glossary
12
Mechanical, Packaging, and Orderable Information
7.2
Functional Block Diagram
Figure 3.
DS125DF410 Data Path Block Diagram — One of Four Channels