Rainbow Electronics LM93 User Manual
0 general description, 0 features, 0 key specifications
Table of contents
Document Outline
- LM93
- 1.0 General Description
- 2.0 Features
- 3.0 Key Specifications
- 4.0 Applications
- 5.0 Ordering Information
- 6.0 Block Diagram
- 7.0 Application
- 8.0 Connection Diagram
- 9.0 Pin Descriptions
- 10.0 Server Terminology
- 11.0 Recommended Implementation
- 12.0 Functional Description
- 12.1 MONITORING CYCLE TIME
- 12.2 A/D INHERENT AVERAGING
- 12.3 TEMPERATURE MONITORING
- 12.4 VOLTAGE MONITORING
- 12.5 RECOMMENDED EXTERNAL SCALING RESISTORS FOR +12V POWER RAILS
- 12.6 RECOMMENDED EXTERNAL SCALING CIRCUIT FOR -12V POWER INPUT
- 12.7 DYNAMIC Vccp MONITORING USING VID
- 12.8 VREF OUTPUT
- 12.9 PROCHOT BACKGROUND INFORMATION
- 12.10 PROCHOT MONITORING
- 12.11 PROCHOT OUTPUT CONTROL
- 12.12 FAN SPEED MEASUREMENT
- 12.13 SMART FAN SPEED MEASUREMENT
- 13.0 Inputs/Outputs
- 14.0 SMBus Interface
- 14.1 SMBUS ADDRESSING
- 14.2 DIGITAL NOISE EFFECT ON SMBUS COMMUNICATION
- 14.3 GENERAL SMBUS TIMING
- 14.4 SMBUS ERROR SAFETY FEATURES
- 14.5 SERIAL INTERFACE PROTOCOLS
- 14.6 READING AND WRITING 16-BIT REGISTERS
- 15.0 Using The LM93
- 15.1 POWER ON
- 15.2 RESETS
- 15.3 ADDRESS SELECTION
- 15.4 DEVICE SETUP
- 15.5 ROUND ROBIN VOLTAGE/TEMPERATURE CONVERSION CYCLE
- 15.6 ERROR STATUS REGISTERS
- 15.7 MASKING, ERROR STATUS AND ALERT
- 15.8 LAYOUT AND GROUNDING
- 15.9 THERMAL DIODE APPLICATION
- 15.10 FAN CONTROL
- 15.10.1 Automatic Fan Control Algorithm
- 15.10.2 Fan Control Temperature Resolution
- 15.10.3 Zone 1-4 to PWM1-2 Binding
- 15.10.4 Fan Control Duty Cycles
- 15.10.5 Alternate PWM Frequencies
- 15.10.6 Fan Control Priorities
- 15.10.7 PWM to 100% Conditions
- 15.10.8 VRDx_HOT Ramp-Up/Ramp-Down
- 15.10.9 PROCHOT Ramp-Up/Ramp-Down
- 15.10.10 Manual PWM Override
- 15.10.11 Fan Spin-Up Control
- 15.11 XOR TREE TEST
- 16.0 Registers
- 16.1 REGISTER WARNINGS
- 16.2 REGISTER SUMMARY TABLE
- 16.3 FACTORY REGISTERS 00h-3Fh
- 16.4 BMC ERROR STATUS REGISTERS 40h-47h
- 16.4.1 Register 40hB_Error Status 1
- 16.4.2 Register 41hB_Error Status 2
- 16.4.3 Register 42hB_Error Status 3
- 16.4.4 Register 43hB_Error Status 4
- 16.4.5 Register 44hB_P1_PROCHOT Error Status
- 16.4.6 Register 45hB_P2_PROCHOT Error Status
- 16.4.7 Register 46hB_GPI Error Status
- 16.4.8 Register 47hB_Fan Error Status
- 16.5 HOST ERROR STATUS REGISTERS
- 16.5.1 Register 48hH_Error Status 1
- 16.5.2 Register 49hH_Error Status 2
- 16.5.3 Register 4AhH_Error Status 3
- 16.5.4 Register 4BhH_Error Status 4
- 16.5.5 Register 4ChH_P1_PROCHOT Error Status
- 16.5.6 Register 4DhB_P2_PROCHOT Error Status
- 16.5.7 Register 4EhH_GPI Error Status
- 16.5.8 Register 4FhH_Fan Error Status
- 16.6 VALUE REGISTERS
- 16.6.1 Registers 50-53hUnfiltered Temperature Value Registers
- 16.6.2 Registers 54-55hFiltered Temperature Value Registers
- 16.6.3 Register 56-65hA/D Channel Voltage Registers
- 16.6.4 Register 67hCurrent P1_PROCHOT
- 16.6.5 Register 68hAverage P1_PROCHOT
- 16.6.6 Register 69hCurrent P2_PROCHOT
- 16.6.7 Register 6AhAverage P2_PROCHOT
- 16.6.8 Register 6BhGPI State
- 16.6.9 Register 6ChP1_VID
- 16.6.10 Register 6DhP2_VID
- 16.6.11 Register 6E-75hFan Tachometer Readings
- 16.7 LIMIT REGISTERS
- 16.7.1 Registers 78-7FhTemperature Limit Registers
- 16.7.2 Registers 80-83hFan Boost Temperature Registers
- 16.7.3 Registers 90-AFhVoltage Limit Registers
- 16.7.4 Register B0-B1hPROCHOT User Limit Registers
- 16.7.5 Register B2-B3hDynamic Vccp Limit Offset Registers
- 16.7.6 Register B4-BBhFan Tach Limit Registers
- 16.8 SETUP REGISTERS
- 16.8.1 Register BChSpecial Function Control 1 (Voltage Hysteresis and Fan Control Filter Enable)
- 16.8.2 Register BDhSpecial Function Control 2 (Smart Tach Mode Enable and Fan Control Temperature R
- 16.8.3 Register BEhGPI/VID Level Control
- 16.8.4 Register BFhPWM Ramp Control
- 16.8.5 Register C0hFan Boost Hysteresis (Zones 1/2)
- 16.8.6 Register C1hFan Boost Hysteresis (Zones 3/4)
- 16.8.7 Register C2hZones 1/2 Spike Smoothing Control
- 16.8.8 Register C3hZones 1/2 MinPWM and Hysteresis
- 16.8.9 Register C4hZones 3/4 MinPWM and Hysteresis
- 16.8.10 Register C5hGPO
- 16.8.11 Register C6hPROCHOT Override
- 16.8.12 Register C7hPROCHOT Time Interval
- 16.8.13 Register C8hPWM1 Control 1
- 16.8.14 Register C9hPWM1 Control 2
- 16.8.15 Register CAhPWM1 Control 3
- 16.8.16 Register CBhSpecial Function PWM1 Control 4
- 16.8.17 Register CChPWM2 Control 1
- 16.8.18 Register CDhPWM2 Control 2
- 16.8.19 Register CEhPWM2 Control 3
- 16.8.20 Register CFhSpecial Function PWM2 Control 4
- 16.8.21 Register D0h-D3hZone 1 to 4 Base Temperatures
- 16.8.22 Register D4h-DFhLookup Table Steps-Zone 1/2 and Zone 3/4 Offset Temperature
- 16.8.23 Register E0hSpecial Function TACH to PWM Binding
- 16.8.24 Register E2hLM93 Status Control
- 16.8.25 Register E3hLM93 Configuration
- 16.9 SLEEP STATE CONTROL AND MASK REGISTERS
- 16.10 OTHER MASK REGISTERS
- 17.0 Absolute Maximum Ratings
- 18.0 Operating Ratings (Notes , )
- DC Electrical Characteristics
- AC Electrical Characteristics
- 19.0 Data Sheet Version History
- 20.0 Physical Dimensions