EVAL-ADT7463EB Analog Devices Inc, EVAL-ADT7463EB Datasheet
EVAL-ADT7463EB
Specifications of EVAL-ADT7463EB
Related parts for EVAL-ADT7463EB
EVAL-ADT7463EB Summary of contents
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FEATURES Monitors Supply Voltages Controls and Monitors Fan Speeds 1 On-Chip and 2 Remote Temperature Sensors Monitors Processor VID Bits Dynamic T Control Mode Optimizes System MIN Acoustics Intelligently Automatic ...
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ADT7463–SPECIFICATIONS Parameter POWER SUPPLY Supply Voltage Supply Current TEMPERATURE-TO-DIGITAL CONVERTER Local Sensor Accuracy Resolution Remote Diode Sensor Accuracy Resolution Remote Sensor Source Current ANALOG-TO-DIGITAL CONVERTER (INCLUDING MUX AND ATTENUATORS) Total Unadjusted Error, TUE Differential Nonlinearity, DNL Power Supply ...
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Parameter DIGITAL INPUT LOGIC LEVELS (TACH INPUTS) Input High Voltage Input Low Voltage Hysteresis DIGITAL INPUT LOGIC LEVELS (THERM) AGTL+ Input High Voltage Input Low Voltage DIGITAL INPUT CURRENT Input High Current, ...
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... Model ADT7463ARQ ADT7463ARQ-REEL ADT7463ARQ-REEL7 EVAL-ADT7463EB CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADT7463 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges ...
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Pin No. Mnemonic Description 1 SDA Digital I/O (Open Drain). SMBus bidirectional serial data. Requires SMBus. 2 SCL Digital Input (Open Drain). SMBus serial clock input. Requires SMBus pull-up. 3 GND Ground Pin for the ADT7463 Power Supply. ...
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ADT7463 FUNCTIONAL DESCRIPTION General Description The ADT7463 is a complete systems monitor and multiple fan controller for any system requiring monitoring and cooling. The device communicates with the system via a serial system management bus. The serial bus controller has ...
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DXP TO GND 0 –5 DXP TO V (3.3V) CC –10 –15 –20 1.0 3.3 10.0 30.0 100.0 LEAKAGE RESISTANCE – M TPC 1. Remote Temperature Error vs. Leakage Resistance 3 HIGH LIMIT 2 +3 SIGMA 1 ...
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ADT7463 FRONT CHASSIS FAN REAR CHASSIS FAN AMBIENT TEMPERATURE CONTROLLER RECOMMENDED IMPLEMENTATION Configuring the ADT7463 as in Figure 2 allows the systems designer the following features: ∑ Six VID inputs (VID0 to VID5) for VRM10 support. ∑ Two PWM outputs ...
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SERIAL BUS INTERFACE Control of the ADT7463 is carried out using the serial system management bus (SMBus). The ADT7463 is connected to this bus as a slave device, under the control of a master controller. The ADT7463 has a 7-bit ...
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ADT7463 2. Data is sent over the serial bus in sequences of nine clock pulses, eight bits of data followed by an Acknowledge Bit from the slave device. Transitions on the data line must occur during the low period of ...
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SCL SDA START BY MASTER FRAME 1 SERIAL BUS ADDRESS Figure 8. Writing to the Address Pointer Register Only 1 SCL SDA START BY MASTER FRAME 1 SERIAL BUS ADDRESS Figure ...
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ADT7463 ADT7463 WRITE OPERATIONS The SMBus specification defines several protocols for different types of read and write operations. The ones used in the ADT7463 are discussed below. The following abbreviations are used in the diagrams: S – START P – ...
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VOLTAGE MEASUREMENT INPUTS The ADT7463 has four external voltage measurement channels. It can also measure its own supply voltage, V Pins are dedicated to measuring and 2.5 V supplies and the processor core ...
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ADT7463 +12V + <0.0156 <0.0065 0.0156–0.0312 0.0065–0.0130 0.0312–0.0469 0.0130–0.0195 0.0469–0.0625 0.0195–0.0260 0.0625–0.0781 0.0260–0.0325 0.0781–0.0937 0.0325–0.0390 0.0937–0.1093 0.0390–0.0455 0.1093–0.1250 0.0455–0.0521 0.1250–0.14060 0.0521–0.0586 4.0000–4.0156 1.6675–1.6740 8.0000–8.0156 3.3300–3.3415 12.0000–12.0156 5.0025–5.0090 15.8281–15.8437 6.5983–6.6048 15.8437–15.8593 6.6048–6.6113 15.8593–15.8750 6.6113–6.6178 15.8750–15.8906 6.6178–6.6244 15.8906–15.9062 6.6244–6.6309 15.9062–15.9218 ...
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VID CODE MONITORING The ADT7463 has five dedicated voltage ID (VID code) inputs. These are digital inputs that can be read back through the VID register (Reg. 0x43) to determine the processor voltage required/being used in the system. Five VID ...
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ADT7463 TEMPERATURE MEASUREMENT SYSTEM Local Temperature Measurement The ADT7463 contains an on-chip band gap temperature sensor whose output is digitized by the on-chip 10-bit ADC. The 8-bit MSB temperature data is stored in the local temperature register (Address 26h). As ...
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If a discrete transistor is used, the collector will not be grounded and should be linked to the base PNP transistor is used, the base is connected to the D– input and the emitter to the D+ input. ...
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ADT7463 Temperature Measurement Registers Reg. 0x25 Remote 1 Temperature = 0x80 Default Reg. 0x26 Local Temperature = 0x80 Default Reg. 0x27 Remote 2 Temperature = 0x80 Default Reg. 0x77 Extended Resolution 2 = 0x00 Default <7:6> TDM2 = Remote 2 ...
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LIMITS, STATUS REGISTERS, AND INTERRUPTS Limit Values Associated with each measurement channel on the ADT7463 are high and low limits. These can form the basis of system status monitoring: a status bit can be set for any out-of-limit condition and ...
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ADT7463 Figure 18. Temperature = Low Limit: INT Occurs 21.00C Figure 19. Temperature = High Limit: No INT Figure 20. Temperature > High Limit: INT Occurs Analog Monitoring Cycle Time The analog monitoring cycle begins when written ...
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OOL = 1 DENOTES A PARAMETER MONITORED THROUGH STATUS REG 2 IS OUT-OF-LIMIT Figure 21. Status Register 1 Status Register 1 (Reg. 0x41) Bit 7 (OOL denotes a bit in Status Register 2 is set and Status Register ...
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ADT7463 Masking Interrupt Sources Interrupt Mask Registers 1 and 2 are located at Addresses 0x74 and 0x75. These allow individual interrupt sources to be masked out to prevent SMBALERT interrupts. Note that masking an interrupt source only prevents the SMBALERT ...
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THERM TIMER The ADT7463 has an internal timer to measure THERM asser- tion time. For example, the THERM input may be connected to the PROCHOT output of a Pentium 4 CPU and measure system performance. The THERM input may also ...
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ADT7463 2.914s 1.457s 728.32ms THERM LIMIT 364.16ms (REG. 0x7A) 182.08ms 91.04ms 45.52ms 22.76ms Figure 27. Functional Diagram of ADT7463’s THERM Monitoring Circuitry Configuring the Desired THERM Behavior 1. Configure the desired pin as the THERM input. Setting Bit 1 (THERM ...
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Configuring the ADT7463 THERM Pin as an Output In addition to the ADT7463 being able to monitor THERM as an input, the ADT7463 can optionally drive THERM low as an output. The user can preprogram system critical thermal limits. If ...
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ADT7463 Driving Two Fans from PWM3 Note that the ADT7463 has four TACH inputs available for fan speed measurement, but only three PWM drive outputs fourth fan is being used in the system, it should be driven from ...
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Driving 2-Wire Fans Figure 33 shows how a 2-wire fan may be connected to the ADT7463. This circuit allows the speed of a 2-wire fan to be measured, even though the fan has no dedicated TACH signal. A series resistor, ...
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ADT7463 12V PULL-UP 4.7k TACH TYP OUTPUT TACH ZD1* *CHOOSE ZD1 VOLTAGE APPROX 0.8 Figure 36b. Fan with TACH Pull-Up to Voltage > e.g Clamped with Zener Diode If the fan has a strong pull-up (less ...
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Fan TACH Limit Registers The fan TACH limit registers are 16-bit values consisting of two bytes. Reg. 0x54 TACH1 Minimum Low Byte = 0xFF Default Reg. 0x55 TACH1 Minimum High Byte = 0xFF Default Reg. 0x56 TACH2 Minimum Low Byte ...
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ADT7463 PWM1 CONFIGURATION (REG. 0x5C) <2:0> SPIN These bits control the start-up timeout for PWM1. 000 = No Startup Timeout 001 = 100 ms 010 = 250 ms (default) 011 = 400 ms 100 = 667 ms 101 = 1 ...
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By reading the PWMx current duty cycle registers, users can keep track of the current duty cycle on each PWM output, even when the fans are running in automatic fan speed control mode or acoustic enhancement mode. VARY PWM DUTY ...
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ADT7463 Address R/W Description 0x20 R 2.5 V Reading 0x21 R V Reading CCP 0x22 R V Reading CC 0x23 Reading 0x24 Reading 0x25 R Remote 1 Temperature 0x26 R Local Temperature 0x27 R ...
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Address R/W Description 0x5C R/W PWM1 Configuration Register 0x5D R/W PWM2 Configuration Register 0x5E R/W PWM3 Configuration Register 0x5F R/W Remote 1 T /PWM 1 Freq RANGE 0x60 R/W Local Temp T /PWM 2 Freq RANGE RANGE RANGE RANGE THRM ...
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ADT7463 Table V. Voltage Reading Registers (Power-On Default = 0x00) Register Address R/W 0x20 Read-Only 0x21 Read-Only 0x22 Read-Only 0x23 Read-Only 0x24 Read-Only If the extended resolution bits of these readings are also being read, the extended resolution registers (Reg. ...
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Table VIII. Current PWM Duty Cycle Registers (Power-On Default = 0xFF) Register Address R/W 0x30 Read/Write 0x31 Read/Write 0x32 Read/Write These registers reflect the PWM duty cycle driving each fan at any given time. When in automatic fan speed control ...
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ADT7463 Table X. Register 0x36 – Dynamic T Bit Name R/W <0> CYR2 Read/Write <1> Read/Write CCP <2> PHTR1 Read/Write <3> PHTL Read/Write <4> PHTR2 Read/Write <5> R1T Read/Write <6> LT Read/Write <7> R2T Read/Write *This register becomes ...
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Table XI. Register 0x37 – Dynamic T Bit Name R/W* <2:0> CYR1 Read/Write <5:3> CYL Read/Write <7:6> CYR2 Read/Write *This register becomes read-only when the Configuration Register 1 Lock bit is set to 1. Any subsequent attempts to write to ...
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ADT7463 Table XII. Register 0x40 – Configuration Register 1 (Power-On Default = 0x00) Bit Name R/W <0> STRT Read/Write <1> LOCK Write Once <2> RDY Read-Only <3> FSPD Read/Write <4> Read/Write <5> FSPDIS Read/Write <6> TODIS Read/Write <7> ...
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Table XIV. Register 0x42 – Interrupt Status Register 2 (Power-On Default = 0x00) Bit Name R/W <0> 12V/VC Read-Only <1> OVT Read-Only <2> FAN1 Read-Only <3> FAN2 Read-Only <4> FAN3 Read-Only <5> F4P Read-Only Read-Only <6> D1 Read-Only <7> D2 ...
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ADT7463 Register Address R/W 0x4E Read/Write 0x4F Read/Write 0x50 Read/Write 0x51 Read/Write 0x52 Read/Write 0x53 Read/Write Exceeding any of these temperature limits by 1∞C will cause the appropriate status bit to be set in the Interrupt Status Register. Setting the ...
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Register Address R/W* 0x5C Read/Write 0x5D Read/Write 0x5E Read/Write Bit Name R/W <2:0> SPIN Read/Write <3> SLOW Read/Write <4> INV Read/Write <7:5> BHVR Read/Write *These registers become read-only when the Configuration Register 1 Lock bit is set to 1. Any ...
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ADT7463 Register Address R/W* 0x5F Read/Write 0x60 Read/Write 0x61 Read/Write Bit Name Read/Write <2:0> FREQ Read/Write <3> THRM Read/Write <7:4> RANGE Read/Write *These registers become read-only when the Configuration Register 1 Lock bit is set. Any further attempts to write ...
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Table XXI. Register 0x62 – Enhance Acoustics Reg 1 (Power-On Default = 0x00) Bit Name R/W* <2:0> ACOU Read/Write <3> EN1 Read/Write <4> SYNC Read/Write <5> MIN1 Read/Write <6> MIN2 Read/Write <7> MIN3 Read/Write *This register becomes read-only when the ...
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ADT7463 Table XXII. Register 0x63 – Enhance Acoustics Reg 2 (Power-On Default = 0x00) Bit Name R/W* <2:0> ACOU3 Read/Write <3> EN3 Read/Write <6:4> ACOU2 Read/Write <7> EN2 Read/Write *This register becomes read-only when the Configuration Register 1 Lock bit ...
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Register Address R/W* 0x64 Read/Write 0x65 Read/Write 0x66 Read/Write Bit Name Read/Write <7:0> PWM Duty Read/Write Cycle *These registers become read-only when the ADT7463 is in automatic fan control mode. Register Address R/W* 0x67 Read/Write 0x68 Read/Write 0x69 Read/Write These ...
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ADT7463 Register Address R/W* 0x6F Read/Write <0> XEN <7:1> Reserved *This register becomes read-only when the Configuration Register 1 Lock bit is set to 1. Any further attempts to write to this register will have no effect. Register Address R/W* ...
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Table XXXI. Register 0x73 – Configuration Register 2 (Power-On Default = 0x00) Bit Name R/W* 0 AIN1 Read/Write 1 AIN2 Read/Write 2 AIN3 Read/Write 3 AIN4 Read/Write 4 AVG Read/Write 5 ATTN Read/Write 6 CONV Read/Write 7 SHDN Read/Write *This ...
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ADT7463 Table XXXII. Register 0x74 – Interrupt Mask Register 1 (Power On Default <7:0> = 0x00) Bit Name R/W 0 2.5V Read/Write 1 V Read/Write CCP 2 V Read/Write Read/Write 4 R1T Read/Write 5 LT Read/Write 6 ...
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Table XXXVI. Register 0x78 – Configuration Register 3 (Power-On Default = 0x00) Bit Name R/W* <0> ALERT Read/Write THERM <1> Read/Write Enable <2> BOOST Read/Write <3> FAST Read/Write <4> DC1 Read/Write <5> DC2 Read/Write <6> DC3 Read/Write <7> DC4 Read/Write ...
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ADT7463 Table XXXIX. Register 0x7B – Fan Pulses per Revolution Register (Power-On Default = 0x55) Bit Name R/W <1:0> FAN1 Read/Write <3:2> FAN2 Read/Write <5:4> FAN3 Read/Write <7:6> FAN4 Read/Write Table XL. Register 0x7D – Configuration Register 4 (Power-On Default ...
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PIN 1 0.010 0.004 COPLANARITY REV. B OUTLINE DIMENSIONS 24-Lead Shrink Small Outline Package [QSOP] (RQ-24) Dimensions shown in inches 0.341 BSC 24 13 0.154 BSC 0.236 BSC 1 12 0.065 0.069 0.053 0.049 0.025 0.012 SEATING 0.010 BSC PLANE ...
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ADT7463 Revision History Location 6/03—Data Sheet Changed from REV REV. B. Updated SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . ...