Document Outline

• Features & Description
• 1. Overview
• 2. Pin Description
  • Clock Generator
  • Control Pins and Serial Data I/O
  • Analog Inputs/Outputs
  • Power Connections
  • Other Pins
• 3. Characteristics & Specifications
  • Recommended Operating Conditions
  • Analog Characteristics
    • Accuracy
    • Analog Inputs (All Inputs)
    • Analog Inputs (Current Inputs)
    • Analog Inputs (Voltage Inputs)
    • Temperature
    • Power Supplies
  • Voltage Reference
    • Reference Output
    • Reference Input
  • Digital Characteristics
    • Master Clock Characteristics
    • Filter Characteristics
    • Input/Output Characteristics
  • Switching Characteristics
    • Start-up
    • Serial Port Timing
    • SDI Timing
    • SDO Timing
    • E2PROM mode Timing
  • (Continued)
    • E1, E2, and E3 Timing (Note 19 and 20)
  • Absolute Maximum Ratings
• 4. Signal Path Description
  • 4.1 Analog-to-Digital Converters
  • 4.2 Decimation Filters
  • 4.3 Phase Compensation
  • 4.4 DC Offset and Gain Correction
  • 4.5 High-pass Filters
  • 4.6 Low-Rate Calculations
  • 4.7 RMS Results
  • 4.8 Power and Energy Results
  • 4.9 Peak Voltage and Current
  • 4.10 Power Offset
• 5. Pin Descriptions
  • 5.1 Analog Pins
    • 5.1.1 Voltage Inputs
    • 5.1.2 Current1 and Current2 Inputs
    • 5.1.3 Power Fail Monitor Input
    • 5.1.4 Voltage Reference Input
    • 5.1.5 Voltage Reference Output
    • 5.1.6 Crystal Oscillator
  • 5.2 Digital Pins
    • 5.2.1 Reset Input
    • 5.2.2 CPU Clock Output
    • 5.2.3 Interrupt Output
    • 5.2.4 Energy Pulse Outputs
    • 5.2.5 Serial Interface
• 6. Setting Up the CS5464
  • 6.1 Clock Divider
  • 6.2 CPU Clock Inversion
  • 6.3 Interrupt Pin Behavior
  • 6.4 Current Input Gain Ranges
  • 6.5 High-pass Filters
  • 6.6 Cycle Count
  • 6.7 Energy Pulse Outputs
  • 6.8 No Load Threshold
  • 6.9 Energy Pulse Width
  • 6.10 Energy Pulse Rate
  • 6.11 Voltage Sag/Current Fault Detection
  • 6.12 Epsilon
  • 6.13 Temperature Measurement
• 7. Using the CS5464
  • 7.1 Initialization
  • 7.2 Power-down States
  • 7.3 Tamper Detection and Correction
  • 7.4 Command Interface
  • 7.5 Register Paging
  • 7.6 Commands
    • 7.6.1 Conversion
    • 7.6.2 Synchronization (SYNC0 and SYNC1)
    • 7.6.3 Power Control (Stand-by, Sleep, Wake-up/Halt and Software Reset)
    • 7.6.4 Calibration
    • 7.6.5 Register Read and Write
• 8. Register Descriptions
  • 8.1 Page Register
    • 8.1.1 Page – Address: 31, Write-only, can be written from ANY page.
  • 8.2 Page 0 Registers
    • 8.2.1 Configuration (Config) – Address: 0
    • 8.2.2 Instantaneous Current (I1, I2), Voltage (V1, V2), and Power (P1, P2)
    • 8.2.3 Active Power (P1AVG , P2AVG )
    • 8.2.4 RMS Current (I1RMS, I2RMS ) and Voltage (V1RMS, V2RMS )
    • 8.2.5 Instantaneous Quadrature Power (Q1, Q2)
    • 8.2.6 Reactive Power (Q1AVG, Q2AVG )
    • 8.2.7 Peak Current (I1PEAK, I2PEAK ) and Peak Voltage (V1PEAK, V2PEAK )
    • 8.2.8 Apparent Power (S1, S2)
    • 8.2.9 Power Factor (PF1, PF2)
    • 8.2.10 Temperature (T) – Address: 27
    • 8.2.11 Active, Apparent, and Reactive Energy Pulse Outputs (EPULSE, SPULSE, QPULSE )
    • 8.2.12 Internal Status (Status) and Interrupt Mask (Mask)
    • 8.2.13 Control (Ctrl) – Address: 28
  • 8.3 Page 1 Registers
    • 8.3.1 DC Offset for Current (I1OFF , I2OFF ) and Voltage (V1OFF , V2OFF )
    • 8.3.2 Gain for Current (I1GAIN , I2GAIN ) and Voltage (V1GAIN , V2GAIN )
    • 8.3.3 Power Offset (P1OFF , P2OFF )
    • 8.3.4 AC Offset for Current (I1ACOFF , I2ACOFF ) and Voltage (V1ACOFF , V2ACOFF )
    • 8.3.5 Mode Control (Modes) – Address: 16
    • 8.3.6 Line to Sample Frequency Ratio (Epsilon) – Address: 17
    • 8.3.7 Pulse Output Width (PulseWidth) – Address: 14
    • 8.3.8 Pulse Output Rate (PulseRate) – Address: 15
    • 8.3.9 Cycle Count (N) – Address: 19
    • 8.3.10 Channel Select Level (Ichanlevel ) – Address: 18
    • 8.3.11 Channel Select Minimum Amplitude (EMIN or IrmsMIN ) – Address: 24
    • 8.3.12 Wideband Reactive Power (Q1WB , Q2WB )
    • 8.3.13 Temperature Gain (TGAIN ) – Address: 22
    • 8.3.14 Temperature Offset (TOFF ) – Address: 23
    • 8.3.15 Filter Settling Time for Conversion Startup (TSETTLE ) – Address: 25
    • 8.3.16 No Load Threshold (LoadMIN) – Address 26
    • 8.3.17 Voltage Fixed RMS Reference (VFRMS) – Address 27
    • 8.3.18 System Gain (G) – Address: 28
    • 8.3.19 System Time (Time) – Address: 29
  • 8.4 Page 2 Registers
    • 8.4.1 Voltage Sag and Current Fault Duration (V1SagDUR , V2SagDUR , I1FaultDUR , I2FaultDUR )
    • 8.4.2 Voltage Sag and Current Fault Level (V1SagLEVEL , V2SagLEVEL , I1FaultLEVEL , I2FaultLEVEL )
• 9. System Calibration
  • 9.1 Calibration
    • 9.1.1 Offset Calibration
      • 9.1.1.1 DC Offset Calibration
      • 9.1.1.2 AC Offset Calibration
    • 9.1.2 Gain Calibration
      • 9.1.2.1 AC Gain Calibration
      • 9.1.2.2 DC Gain Calibration
    • 9.1.3 Calibration Order
    • 9.1.4 Temperature Sensor Calibration
      • 9.1.4.1 Temperature Offset Calibration
      • 9.1.4.2 Temperature Gain Calibration
• 10. E2PROM Operation
  • 10.1 E2PROM Configuration
  • 10.2 E2PROM Code
  • 10.3 Which E2PROMs Can Be Used?
• 11. Basic Application Circuits
• 12. Package Dimensions
• 13. Ordering Information
• 14. Environmental, Manufacturing, & Handling Information
• 15. Revision History