SLVSEN9D April   2019  – July 2022

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics: DC Specifications
    6. 6.6  Electrical Characteristics: Power Consumption
    7. 6.7  Electrical Characteristics: AC Specifications (Dual-Channel Mode)
    8. 6.8  Electrical Characteristics: AC Specifications (Single-Channel Mode)
    9. 6.9  Timing Requirements
    10. 6.10 Switching Characteristics
    11. 6.11 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Device Comparison
      2. 7.3.2  Analog Inputs
        1. 7.3.2.1 Analog Input Protection
        2. 7.3.2.2 Full-Scale Voltage (VFS) Adjustment
        3. 7.3.2.3 Analog Input Offset Adjust
      3. 7.3.3  ADC Core
        1. 7.3.3.1 ADC Theory of Operation
        2. 7.3.3.2 ADC Core Calibration
        3. 7.3.3.3 Analog Reference Voltage
        4. 7.3.3.4 ADC Overrange Detection
        5. 7.3.3.5 Code Error Rate (CER)
      4. 7.3.4  Temperature Monitoring Diode
      5. 7.3.5  Timestamp
      6. 7.3.6  Clocking
        1. 7.3.6.1 Noiseless Aperture Delay Adjustment (tAD Adjust)
        2. 7.3.6.2 Aperture Delay Ramp Control (TAD_RAMP)
        3. 7.3.6.3 SYSREF Capture for Multi-Device Synchronization and Deterministic Latency
          1. 7.3.6.3.1 SYSREF Position Detector and Sampling Position Selection (SYSREF Windowing)
          2. 7.3.6.3.2 Automatic SYSREF Calibration
      7. 7.3.7  Programmable FIR Filter (PFIR)
        1. 7.3.7.1 Dual Channel Equalization
        2. 7.3.7.2 Single Channel Equalization
        3. 7.3.7.3 Time Varying Filter
      8. 7.3.8  Digital Down Converters (DDC)
        1. 7.3.8.1 Rounding and Saturation
        2. 7.3.8.2 Numerically-Controlled Oscillator and Complex Mixer
          1. 7.3.8.2.1 NCO Fast Frequency Hopping (FFH)
          2. 7.3.8.2.2 NCO Selection
          3. 7.3.8.2.3 Basic NCO Frequency Setting Mode
          4. 7.3.8.2.4 Rational NCO Frequency Setting Mode
          5. 7.3.8.2.5 NCO Phase Offset Setting
          6. 7.3.8.2.6 NCO Phase Synchronization
        3. 7.3.8.3 Decimation Filters
        4. 7.3.8.4 Output Data Format
        5. 7.3.8.5 Decimation Settings
          1. 7.3.8.5.1 Decimation Factor
          2. 7.3.8.5.2 DDC Gain Boost
      9. 7.3.9  JESD204C Interface
        1. 7.3.9.1 Transport Layer
        2. 7.3.9.2 Scrambler
        3. 7.3.9.3 Link Layer
        4. 7.3.9.4 8B/10B Link Layer
          1. 7.3.9.4.1 Data Encoding (8B/10B)
          2. 7.3.9.4.2 Multiframes and the Local Multiframe Clock (LMFC)
          3. 7.3.9.4.3 Code Group Synchronization (CGS)
          4. 7.3.9.4.4 Initial Lane Alignment Sequence (ILAS)
          5. 7.3.9.4.5 Frame and Multiframe Monitoring
        5. 7.3.9.5 64B/66B Link Layer
          1. 7.3.9.5.1 64B/66B Encoding
          2. 7.3.9.5.2 Multiblocks, Extended Multiblocks and the Local Extended Multiblock Clock (LEMC)
          3. 7.3.9.5.3 Block, Multiblock and Extended Multiblock Alignment using Sync Header
            1. 7.3.9.5.3.1 Cyclic Redundancy Check (CRC) Mode
            2. 7.3.9.5.3.2 Forward Error Correction (FEC) Mode
          4. 7.3.9.5.4 Initial Lane Alignment
          5. 7.3.9.5.5 Block, Multiblock and Extended Multiblock Alignment Monitoring
        6. 7.3.9.6 Physical Layer
          1. 7.3.9.6.1 SerDes Pre-Emphasis
        7. 7.3.9.7 JESD204C Enable
        8. 7.3.9.8 Multi-Device Synchronization and Deterministic Latency
        9. 7.3.9.9 Operation in Subclass 0 Systems
      10. 7.3.10 Alarm Monitoring
        1. 7.3.10.1 Clock Upset Detection
        2. 7.3.10.2 FIFO Upset Detection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Dual-Channel Mode
      2. 7.4.2 Single-Channel Mode (DES Mode)
      3. 7.4.3 Dual-Input Single-Channel Mode (DUAL DES Mode)
      4. 7.4.4 JESD204C Modes
        1. 7.4.4.1 JESD204C Operating Modes Table
        2. 7.4.4.2 JESD204C Modes continued
        3. 7.4.4.3 JESD204C Transport Layer Data Formats
        4. 7.4.4.4 64B/66B Sync Header Stream Configuration
      5. 7.4.5 Power-Down Modes
      6. 7.4.6 Test Modes
        1. 7.4.6.1 Serializer Test-Mode Details
        2. 7.4.6.2 PRBS Test Modes
        3. 7.4.6.3 Clock Pattern Mode
        4. 7.4.6.4 Ramp Test Mode
        5. 7.4.6.5 Short and Long Transport Test Mode
          1. 7.4.6.5.1 Short Transport Test Pattern
        6. 7.4.6.6 D21.5 Test Mode
        7. 7.4.6.7 K28.5 Test Mode
        8. 7.4.6.8 Repeated ILA Test Mode
        9. 7.4.6.9 Modified RPAT Test Mode
      7. 7.4.7 Calibration Modes and Trimming
        1. 7.4.7.1 Foreground Calibration Mode
        2. 7.4.7.2 Background Calibration Mode
        3. 7.4.7.3 Low-Power Background Calibration (LPBG) Mode
      8. 7.4.8 Offset Calibration
      9. 7.4.9 Trimming
    5. 7.5 Programming
      1. 7.5.1 Using the Serial Interface
        1. 7.5.1.1 SCS
        2. 7.5.1.2 SCLK
        3. 7.5.1.3 SDI
        4. 7.5.1.4 SDO
        5. 7.5.1.5 Streaming Mode
    6. 7.6 SPI Register Map
  8. 8 Application Information Disclaimer
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Wideband RF Sampling Receiver
        1. 8.2.1.1 Design Requirements
          1. 8.2.1.1.1 Input Signal Path
          2. 8.2.1.1.2 Clocking
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Calculating Values of AC-Coupling Capacitors
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Reconfigurable Dual-Channel 5-GSPS or Single-Channel 10-Gsps Oscilloscope
        1. 8.2.2.1 Design Requirements
          1. 8.2.2.1.1 Input Signal Path
          2. 8.2.2.1.2 Clocking
          3. 8.2.2.1.3 ADC12DJ5200RF
        2. 8.2.2.2 Application Curves
    3. 8.3 Initialization Set Up
  9. 9 Power Supply Recommendations
    1. 9.1 Power Sequencing
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 145
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information
7.3.8.2.2 NCO Selection

Within each channel DDC, four different frequency and phase settings are available for use. Each of the four settings use a different phase accumulator within the NCO. Because all four phase accumulators are independent and continuously running, rapid switching between different NCO frequencies is possible allowing for phase coherent frequency hopping.

The specific frequency-phase pair used for each channel is selected through the NCOA[1:0] or NCOB[1:0] input pins when CMODE is set to 1. Alternatively, the selected NCO can be chosen through SPI by CSELA for DDC A and CSELB for DDC B by setting CMODE to 0 (default). The logic table for NCO selection is provided in Table 7-10 for both the GPIO and SPI selection options.

Table 7-10 Logic Table for NCO Selection Using GPIO or SPI
NCO SELECTIONCMODENCOx1NCOx0CSELx[1]CSELx[0]
NCO 0 using GPIO100XX
NCO 1 using GPIO101XX
NCO 2 using GPIO110XX
NCO 3 using GPIO111XX
NCO 0 using SPI0XX00
NCO 1 using SPI0XX01
NCO 2 using SPI0XX10
NCO 3 using SPI0XX11

The frequency for each phase accumulator is programmed independently through the FREQAx, FREQBx (x = 0 to 3) and, optionally, NCO_RDIV register settings. The phase offset for each accumulator is programmed independently through the PHASEAx and PHASEBx (x = 0 to 3) register settings.