EMC2300-AZC-TR SMSC, EMC2300-AZC-TR Datasheet
EMC2300-AZC-TR
Specifications of EMC2300-AZC-TR
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EMC2300-AZC-TR Summary of contents
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... Two low power modes when monitoring if off: Sleep and Shutdown EMC2300-AZC FOR 16 PIN, SSOP LEAD-FREE ROHS COMPLIANT PACKAGE EMC2300-AZC-TR FOR 16 PIN, SSOP LEAD-FREE ROHS COMPLIANT PACKAGE (TAPE AND REEL) 2,800 UNITS FOR 13 INCH REEL, 97 UNITS PER TUBE SMSC EMC2300 EMC2300 ...
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... TORT; NEGLIGENCE OF SMSC OR OTHERS; STRICT LIABILITY; BREACH OF WARRANTY; OR OTHERWISE; WHETHER OR NOT ANY REMEDY OF BUYER IS HELD TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors 2 DATASHEET Datasheet SMSC EMC2300 ...
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... Fan Control Device with High Frequency PWM and Temperature Monitors Datasheet Table of Contents Chapter 1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Chapter 2 Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.1 EMC2300 Pinout Chapter 3 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.1 Pin Functions for EMC2300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.2 Buffer Type Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.3 3.3V Operation, 5V Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Chapter 4 Operational Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.1 Maximum Guaranteed Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.2 Ratings for Operation ...
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... Registers 94h-96h: PWMx Option Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Chapter 9 Timing Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 9.1 PWM Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 9.2 SMBus Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Chapter 10 Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 10.1 Package Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Appendix A ADC Voltage Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Appendix B Example Fan Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors 4 DATASHEET Datasheet SMSC EMC2300 ...
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... Fan Control Device with High Frequency PWM and Temperature Monitors Datasheet List of Figures Figure 2.1 EMC2300 16 Pin SSOP Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 5.1 Address Selection on EMC2300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 6.1 Interrupt Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 7.1 Automatic Fan Control Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Figure 7.2 Automatic Fan Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 7.3 Spin Up Reduction Enabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Figure 7 ...
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... Table 8.37 Register 7Ch: Special Function Register Table 8.39 AVG[2:0] Bit Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Table 8.40 Register 7Eh: Interrupt Enable 1 Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Table 8.42 Register 7Fh: Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors 6 DATASHEET Datasheet SMSC EMC2300 ...
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... Table 8.49 Register 82h: Interrupt Enable 3 Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Table 8.51 Registers 85h-88h: A/D Converter LSbs Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Table 8.53 Registers 94h-96h: PWMx Option Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Table 9.1 Timing for PWM[1:3] Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Table 9.2 SMBus Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Table A.1 Analog-to-Digital Voltage Conversions for Hardware Monitoring Block SMSC EMC2300 7 DATASHEET Revision 0.32 (06-23-08) ...
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... EMC2300 one internal. The external temperatures are measured via thermal diode inputs capable of monitoring remote devices. In addition, the EMC2300 is equipped with an ambient temperature sensor for measuring the internal temperature. Pulse Width Modulators (PWM) control the speed of the fans by varying the output duty cycle of the PWM ...
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... Fan Control Device with High Frequency PWM and Temperature Monitors Datasheet Chapter 2 Pinout The EMC2300 is offered pin SSOP mechanical package. 2.1 EMC2300 Pinout SDA SCLK VSS VCC TACH3/INT# PWM2/INT# TACH1 TACH2 Figure 2.1 EMC2300 16 Pin SSOP Pinout SMSC EMC2300 16 1 PWM1/xTest Out ...
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... Chapter 3 Pin Description 3.1 Pin Functions for EMC2300 PIN # NAME 1 SDA System Management Bus bi-directional Data. Open Drain output. 2 SCLK System Management Bus Clock. 13 Remote1- This is the negative Analog input (current sink) from the remote thermal diode. This serves as the negative input into the A/D. ...
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... Input/Output, 8mA sink, 4mA source. 3.3 3.3V Operation, 5V Tolerance The EMC2300 is intended to operate with a nominal 3.3V power supply. The analog voltage pins are connected to voltage sources at their respective nominal levels. All digital signal pins are 3V switching, but are tolerant to 5V. SMSC EMC2300 Table 3 ...
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... External Diode Sensor Accuracy Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors < TA < VCC=+3.3V±10% MIN TYP MAX -3 ±0. ±0. DATASHEET Datasheet + +150 C UNITS COMMENTS <= T < <= T < -40 C <= T <= 125 <= T <= 100 SMSC EMC2300 ...
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... Input Buffer (VID0-VID4,TACH1-TACH4) Low Input Level High Input Level IOD Type Buffer (SCL, SDA, PWM1, PWM2, PWM3/ADDRESS ENABLE, INT# Low Input Level High Input Level Hysteresis V Low Output Level SMSC EMC2300 < TA < VCC=+3.3V±10% MIN TYP MAX ±2 TUE DNL ±1 PSS ± ...
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... Fan Control Device with High Frequency PWM and Temperature Monitors < TA < VCC=+3.3V±10% MIN TYP MAX 500 DATASHEET Datasheet UNITS COMMENTS (Note 4. µ µA pF All outputs open, all inputs transitioning from/to 0V to/from 3.3V. mA µA µA for conversion cycle timing for all SMSC EMC2300 ...
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... Address Select pulled to VCC through a 10kΩ resistor In this way, there can three devices can be used to monitor additional processors and temperature zones. SMSC EMC2300 device will be placed into Address Enable mode and assign itself an SMBus Table 5.1 SMBus Slave Address Options BOARD IMPLEMENTATION Resistor value will be dependent on PWM circuit implemented ...
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... The Write Byte protocol is used to write data to the registers. The data will only be written if the protocol shown in Table 5.2 is performed correctly. Only one byte is transferred at time for a Write Byte protocol. Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors Address Decided EMC2300 45. 16 DATASHEET Datasheet SMSC EMC2300 ...
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... Undefined Registers Reads to undefined registers return 00h. Writes to undefined registers have no effect and return no error. 5.5 General Call Address Response The will not respond to a general call address of 0000_000. EMC2300 SMSC EMC2300 Table 5.2 SMBus Write Byte Protocol WR ACK REG. ADDR performed correctly ...
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... Section 9.2, "SMBus Interface," on page Interrupt Status Registers on page 23 EMC2300 RD ACK ADDRESS 1 1 device will disengage the SMBALERT# pull-down EMC2300 18 DATASHEET Datasheet ). Devices that have TIMEOUT, MIN 76. and the section describing the Interrupt device is EMC2300 SLAVE NACK STOP SMSC EMC2300 ...
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... INT# signal via the group enable bits for each type of event (i.e., temperature, voltage and fan). See the section titled Interrupt Status Registers on page SMSC EMC2300 23. 19 DATASHEET ...
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... These values are compared to the programmed limits in the Limit Register. The out-of-limit and diode fault conditions are stored in the Interrupt Status Registers. 6.2 Resetting the EMC2300 6.2.1 Power-On Reset All the registers in the Hardware Monitor Block, except the reading registers, reset to a default value when power is applied to the block ...
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... The hardware monitor conversion clock is 45KHz ± 10%. Note 6.1 Note 6.2 Temperature conversions take 96 clocks, each (2.133ms nom.); Voltage conversions take 68 clocks, each (1.511ms nom). SMSC EMC2300 Table 6.1 AVG[2:0] Bit Decoder MEASUREMENTS PER READING REMOTE INTERNAL DIODE 2 DIODE ...
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... Sampling of all values occurs in a nominal 210ms (default - see 21). Table 6.3 ADC Conversion Sequence REGISTER Remote Diode Temp Reading 1 Ambient Temperature reading VCC reading Vccp (processor) reading Remote Diode Temp Reading 2 21). Each measured value is compared to values stored 31. 31. 22 DATASHEET Datasheet Auto SMSC EMC2300 ...
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... Each interrupt status bit has a corresponding bit located in an interrupt enable register, which may be used to enable/disable the individual event from setting the status bit. See the following figure for the status and enable bits used to control the interrupt bits and INT# pin. SMSC EMC2300 and Register 42h: Interrupt Status Register 2 on page Chapter 8, " ...
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... Vccp_Error (INT1[1]) + VCC_Error (INT1[2]) Diode 1 Limit (INT1[4]) Ambient Limit (INT1[5]) + Diode 2 Limit (INT1[6]) INT2 (INT1[7]) INT_STS2 Reg TACH1 (INT2[2]) TACH2 (INT2[3]) + TACH3 (INT2[4]) TACH4 (INT2[5]) Diode 1 Fault (INT2[6]) Diode 2 Fault (INT2[7]) Figure 6.1 Interrupt Control 24. 24 DATASHEET Datasheet + INT# SMSC EMC2300 ...
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... This pin will remain low while the associated voltage error bit in the Interrupt Status Register 1 or Interrupt Status Register 2 is set. SMSC EMC2300 Register 7Ch: Special Function Register on page 24. The following description assumes that the interrupt enable bits for all ...
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... ADC, and scaled such that the correct value refers to 3/4 scale or 192 decimal. The VCCP input is scaled for a full range 3V. Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors Table 6.4 Low Power Mode Control Bits LPMD 0 Sleep Mode 1 Shutdown Mode x Monitoring 26 DATASHEET Datasheet 18. DESCRIPTION SMSC EMC2300 ...
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... Note that this will cause the associated remote diode limit exceeded status bit to be set (i.e. Remote Diode x Limit Error bits (D1 and D2) are located in the Interrupt Status 1 Register at register address 41h). SMSC EMC2300 shows the values of the analog inputs that correspond to 79. ...
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... READING (HEX) -127 81h -50 CEh -25 E7h -1 FFh 0 00h 1 01h 25 19h 50 32h 127 7Fh 128 80h 28 DATASHEET Datasheet 0 C. DIGITAL OUTPUT 1000 0001 1100 1110 1110 0111 1111 1111 0000 0000 0000 0001 0001 1001 0011 0010 0111 1111 1000 0000 SMSC EMC2300 ...
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... BIOS in the limit and parameter registers. 1. Set limits and parameters (not necessarily in this order) 2. [5F-61h] Set PWM frequencies and Auto Fan Control Range. 3. [62-63h] Set Ramp Rate Control SMSC EMC2300 Chapter 8, Register will continue to operate based on default values until the Start bit, in the EMC2300 ...
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... These registers are not writable when the lock bit is set. Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors offers the option of generating an interrupt indicated by the INT# signal located 38. 30 DATASHEET Datasheet Section 7.1.4, SMSC EMC2300 ...
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... If the start bit is one, the Auto Fan Control block will evaluate the temperature in the zones configured for each Fan in a round robin method. The Auto Fan Control block completely evaluates the zones for all three fans in a maximum of 0.25sec. SMSC EMC2300 When a value is written to this register in manual mode there will be a delay 32). ...
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... Yes Fan Spinning Up? Yes No Temp >= AbsLimit Yes (6A~6C emp >= Low Limit (67~69) 100% Yes Min PWM Yes at 0%? No Set fan speed based on Auto Fan Range Algorithm* for details. 32 DATASHEET Datasheet Auto Fan Mode Initiated No Set fan to min PWM (64~ 66) SMSC EMC2300 ...
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... SMSC EMC2300 shows the control for the auto fan algorithm. The part allows a minimum 33 DATASHEET Revision 0 ...
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... Note 7.1 The EMC2300 automatically performs the Spin Up routine upon power-up. The only conditions that will allow the fan stationary state are if the user programs the PWM input to 00h (in Manual Mode) or the user programs the Minimum PWM to 00h and the corresponding temperature channel(s) are below the low temperature limit ...
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... If the current PWM duty cycle is equal to the calculated duty cycle the PWM output will remain unchanged. SMSC EMC2300 duty cycle = 100% tach reading > ...
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... Fan Control Device with High Frequency PWM and Temperature Monitors 63). The actual duty cycle output is changed once per the period of the PWM 37.) Table 6.2, “Conversion Cycle Timing,” on page 36 DATASHEET Datasheet Register 62h, 63h: PWM Ramp Figure 7.4 Illustration of PWM 21). SMSC EMC2300 ...
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... Calculate Duty Cycle 70h Ramping Duty Cycle 70h PWM Duty Cycle 70h Figure 7.4 Illustration of PWM Ramp Rate Control SMSC EMC2300 Table 7.1 PWM Ramp Rate PWM RAMP TIME (SEC) (TIME FROM MIN DUTY CYCLE TO 100% DUTY (PWM STEP SIZE = CYCLE) 52 ...
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... The fan tachometer reading registers are continuously updated. Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors In this mode, the fan tachometer simply counts the number of 90kHz 38 DATASHEET Datasheet SMSC EMC2300 ...
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... The Tachometer circuit begins monitoring the tach when the associated PWM output transitions high and the guard time has expired. Each tach circuit will continue monitoring until the programmed number of edges has been detected, whichever comes first. The Fan Tachometer value may be updated every 300ms, 500ms, or 1000ms. SMSC EMC2300 44.) 39 DATASHEET Linking Fan Tachometers Revision 0 ...
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... Mode 1 should be enabled and the tachometer limit register should be set to FFFFh if a tachometer input is left unconnected. Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors PWM “ON” (Figure 7.5) 40 DATASHEET Datasheet 6 F (Figure 7.5) SMSC EMC2300 ...
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... Whenever the programmed number of edges is detected, the edge detection ends and the state machine is reset. The tachometer reading register is updated with the tachometer count value at this time. See Note 7.3 SMSC EMC2300 below for the one exception to this behavior. 41 DATASHEET Revision 0.32 (06-23-08) ...
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... DATASHEET Datasheet 39, the (Note 7.5) (30/T ) TachPulse 50% 100% 5347 2662 3554 1774 2662 1330 2126 1063 1768 885 1319 661 878 440 661 332 SMSC EMC2300 ...
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... Interrupt Enable 2 (Fan Tachs) register bits are configured to enable Fan Tach events. No interrupt status bits are set for fan events (even if the fan is stalled) if the associated tachometer minimum is set to FFFFh (registers 54h-5Bh). SMSC EMC2300 , ...
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... Inhibit fan tachometer interrupts when the associated PWM is ‘OFF’. See the description of the PWM_TACH register. The default configuration is: PWM1 -> TACH1. PWM2 -> TACH2. PWM3 -> TACH3 & TACH4. Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors 24. 44 DATASHEET Datasheet SMSC EMC2300 ...
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Chapter 8 Register Set Definition for the Lock and Start columns: Yes = Register is made read-only when the related bit is set Register is not made read-only when the related bit is set. Reg Read Reg Name ...
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Reg Read Reg Name Addr /Write 41h R-C Interrupt Status Register 1 Note 8.3 42h R-C Interrupt Status Register 2 Note 8.3 43h R Reserved 44h R Reserved 45h R Reserved 46h R/W Vccp Low Limit 47h R/W Vccp High ...
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... AVG0 SMSC SMSC INTEN Note 8.7 Note 8.7 RES RES RES RES RES VCC RES RES RES VCCP INIT SMSC SMSC SUREN TRDY Note 8.7 Note 8.7 RES RES RES TACH4 TACH3 TACH2 T4H T4L T3H T3L T2H RES RES RES ...
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... These Reserved bits are read/write bits. Writing these bits to a ‘1’ has no effect on the hardware. Note 8.7 SMSC bits may be read/write bits. Writing these bits to a value other than the default value may cause unwanted results Table 8.1 Register Summary (continued) ...
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... Reading register will return a value of 80h if the remote diode pins are not implemented by the board designer or are not functioning properly (this corresponds to the diode fault interrupt status bits). The SMSC EMC2300 Table 8.1, "Register Summary" above are the defined registers in the part. Any ...
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... Fan Control Device with High Frequency PWM and Temperature Monitors EMC2300 READING (DEC) -127 . . . - 127 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 (MSb DATASHEET Datasheet Chip with a minimum READING (HEX) 81h . . . CEh . . . 00h . . . 32h . . . 7Fh 80h Bit 0 Default Bit 2 Bit 1 (LSb) Value N/A SMSC EMC2300 ...
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... At initial power-on, the duty cycle is 100% and thus, when read, this register will return FFh. After the Ready/Lock/Start Register Start bit is set, this register and the PWM signals are updated based SMSC EMC2300 μ s). This gives the measured period of two full TACH pulses which equals μ ...
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... Typically, the delay will be 1/(2*PWM frequency) seconds. Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors VALUE (DECIMAL 128 255 52 DATASHEET Datasheet VALUE (HEX) 00h 40h 80h FFh SMSC EMC2300 ...
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... Register 40h: Ready/Lock/Start Monitoring Table 8.11 Register 40h: Ready/Lock/Start Monitoring Register Read/ Register Name Address Write 40h R/W Ready/Lock/Start Setting the Lock bit makes the Lock bit read only. SMSC EMC2300 Table 8.9 Register 3Eh: Company ID Bit 7 Bit 6 Bit 5 Bit 4 (MSb ...
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... A/Ds have stabilized and the A/Ds are in operational mode). (Always reads back ‘1’.) If this bit is set to 1, all PWM outputs go to 100% duty cycle regardless of whether or not the lock bit is set. Reserved. 54 DATASHEET Datasheet enables monitoring EMC2300 SMSC EMC2300 ...
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... START bit is set to ‘1’. If the enable bit is cleared when the START bit is 0, the associated interrupt status bit will not be cleared until the start bit is set to 1 and the associated reading register is updated. SMSC EMC2300 Bit 7 Bit 6 Bit 5 ...
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... The device automatically sets this bit to 1 when a status bit is set in the Interrupt Status Register 2. Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 (MSb) ERR2 ERR1 TACH4 TACH3 TACH2 56 DATASHEET Datasheet Bit 0 Default Bit 2 Bit 1 (LSb) Value TACH1 RES RES 00h after it is read by EMC2300 SMSC EMC2300 ...
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... Voltages are presented in the registers at ¾ full EMC2300 scale for the nominal voltage, meaning that at nominal voltage, each input will be C0h, as shown in Table 8.18. SMSC EMC2300 DESCRIPTION Reserved Reserved The automatically sets this bit to 1 when the TACH1 input ...
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... Interrupt Status Register 1 (41h). For example, if EMC2300 LIMIT (DEC) -127 . . . - 127 58 DATASHEET Datasheet REGISTER MINIMUM SETTING AT VOLTAGE MINIMUM VOLTAGE 0V 00h 0V 00h Bit 0 Default Bit 2 Bit 1 (LSb) Value 81h 7Fh 81h 7Fh 81h 7Fh LIMIT (HEX) 81h . . . CEh . . . 00h . . . 32h . . . 7Fh SMSC EMC2300 ...
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... PWM 3 Configuration These registers become read only when the Lock bit is set. Any further attempts to write to these registers shall have no effect. Bits [7:5] Zone/Mode Bits [7:5] of the PWM Configuration registers associate each PWM with a temperature sensor. SMSC EMC2300 Bit 7 Bit 6 Bit 5 Bit 4 ...
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... Table 8.23 Fan Zone Setting PWM CONFIGURATION Fan on zone 1 auto Fan on zone 2 auto Fan on zone 3 auto Fan always on full Fan disabled Fan controlled by hottest of zones 2,3 Fan controlled by hottest of zones 1,2,3 Fan manually controlled 60 DATASHEET Datasheet Table 8.24, "Fan Spin-Up Register" SMSC EMC2300 ...
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... Low Temp Limit and (Zone x Low Temp Limit + Zone x Range), the PWM duty cycle increases linearly according to the temperature as shown in the figure below. Below Fan Temp Limit: Fan at Fan PWM Minimum Temperature Figure 8.1 Fan Activity Above Low Temp Limit SMSC EMC2300 Table 8.24 Fan Spin-Up Register SPIN UP TIME 250ms (default) Bit 7 Bit 6 ...
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... Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors PWM FREQUENCY 11.0 Hz 14.6 Hz 21.9 Hz 29.3 Hz (default) 35.2 Hz 44.0 Hz 58.6 Hz 87.7 Hz N/A ~25 Khz N/A RANGE ( ° 2 DATASHEET Datasheet SMSC EMC2300 ...
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... RR1E, RR2E, and RR3E enable PWM Ramp Rate Control for PWM 1, 2, and 3 respectively. RR1-2, RR1-1, and RR1-0 control ramp rate time for PWM 1 RR2-2, RR2-1, and RR2-0 control ramp rate time for PWM 2 RR3-2, RR3-1, and RR3-0 control ramp rate time for PWM 3 SMSC EMC2300 RANGE ( ° 13.33 ...
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... Datasheet PWM RAMP RATE 1/255) (HZ) 206 msec 4.85 104 msec 9.62 69 msec 14.49 41 msec 24.39 26 msec 38.46 18 msec 55.56 10 msec 100 5 msec 200 Bit 0 Default Bit 3 Bit 2 Bit 1 (LSb) Value 80h 80h 80h VALUE (HEX) 00h . . . 40h . . . 80h . . . FFh SMSC EMC2300 ...
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... Registers 6A-6Ch: Absolute Temperature Limit Table 8.34 Registers 6A-6Ch: Absolute Temperature Limit Register Read/ Register Name Address Write 6Ah R/W Zone 1 Temp Absolute Limit 6Bh R/W Zone 2 Temp Absolute Limit 6Ch R/W Zone 3 Temp Absolute Limit SMSC EMC2300 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 (MSb ...
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... Fan Control Device with High Frequency PWM and Temperature Monitors ABS LIMIT (DEC) -127 . . . - 127 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 (MSb) RES RES RES RES RES 66 DATASHEET Datasheet ABS LIMIT (HEX) 81h . . . CEh . . . 00h . . . 32h . . . 7Fh Bit 0 Default Bit 2 Bit 1 (LSb) Value RES RES XEN 00h SMSC EMC2300 ...
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... SFTR[7:5] AVG2 AVG1 AVG0 REM DIODE SMSC EMC2300 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 AVG2 AVG1 AVG0 SMSC SMSC DESCRIPTION Low Power Mode Select. ‘0’ = Sleep Mode ‘1’ = Low Power Mode Monitoring Mode Select. ‘0’ = Continuous Mode ‘1’ = Cycle Mode Global Interrupt enable ...
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... When set, enables VCC channel to update status registers and generate interrupts. Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 (MSb) INIT SMSC SMSC SUREN TRDY 68 DATASHEET Datasheet Bit 0 Default Bit 3 Bit 2 Bit 1 (LSb) Value RES RES VOLT ECh Bit 0 Default Bit 2 Bit 1 (LSb) Value RES P2INT T3INT 10h SMSC EMC2300 ...
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... Bit[2] INTEN of the Special Function register at offset 7Ch). See Figure 6.1 Interrupt Control on page This register contains the following bits: SMSC EMC2300 DESCRIPTION Determines functionality of the TACH3/INT# pin. ‘0’ - TACH3 input ‘1’- INT# output Determines the functionality of the PWM2/INT# pin. ‘ ...
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... Determine which PWM outputs are associated with the TACH3 input. See Table 8.48 Determine which PWM outputs are associated with the TACH4 input. See Table 8.48 70 DATASHEET Datasheet Bit 0 Default Bit 3 Bit 2 Bit 1 (LSb) Value T2H T2L T1H T1L A4h SMSC EMC2300 ...
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... RES R RES R RES R RES R/W 0 SMSC EMC2300 PWM Associated With Tachx Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 (MSb) RES RES RES RES D2EN 24. DESCRIPTION Group Temperature enable bit - when set, allows Temperature channels to assert the INT# pin. When set, enables the ambient temperature monitor to update the status registers and generate interrupts ...
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... Default Bit 2 Bit 1 (LSb) Value RD1.2 RD1.1 RD1.0 N/A AM.2 AM.1 AM.0 N/A VCP.2 VCP.1 VCP.0 N/A Bit 0 Default Bit 2 Bit 1 (LSb) Value EDG1 EDG0 SLOW 04h EDG1 EDG0 SLOW 04h EDG1 EDG0 SLOW 04h EDG1 EDG0 SLOW 04h SMSC EMC2300 ...
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... PWM3 Option These registers become read only when the Lock bit is set. Any further attempts to write to these registers shall have no effect. SMSC EMC2300 DESCRIPTION ‘0’ - Force TACH reading register to FFFEh if number of tach edges detected is greater than 0 but less than the programmed number of edges ‘ ...
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... PWM duty cycle down by 2 creating a duty cycle with a resolution of 1/256. This allows the device to support higher PWM frequencies ‘0’= 64 count PWM duty cycle - resolution is 1/64 ‘1’ = 256 count PWM duty cycle 74 DATASHEET Datasheet SMSC EMC2300 ...
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... This value is programmable by the PWM frequency bits located in the FRFx registers. Note 9.2 The PWM High Time is based on a percentage of the total PWM period (min=0/256*T max =255/256 t1). PWM SMSC EMC2300 t1 t2 Figure 9.1 PWMx Output Timing Table 9.1 Timing for PWM[1:3] Outputs MIN 0.04 9 ...
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... SCLK line is released DAT 76 DATASHEET Datasheet t HD;STA t SU;STO P MAX UNITS COMMENTS 400 kHz Note 9 Note 9.4 μ s μ s μ s μ s μ s 0.9 ns Note 9.5 μ s μ s 300 ns 300 ns 400 bus. See “The I C Bus Specification,” SMSC EMC2300 ...
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Chapter 10 Mechanical Specifications INDEX AREA 5 (D/2 X E1/ TOP VIEW C SEATING PLANE ccc C SIDE VIEW GAUGE PLANE DETAIL "A" SCALE: 3/1 SEE DETAIL ...
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... All devices will be marked on the first line of the top side with the SMSC logo. On the second line, they will be marked with “EMC2300” followed by the first two letters of the package ordering information “AZ”. On the third line, they will be marked with the lot number. ...
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... SMSC EMC2300 V Decimal CCPIN <0.012 0 0.012–0.023 1 0.023–0.035 2 0.035–0.047 3 0.047–0.058 4 0.058–0.070 5 0.070– ...
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... Note: These examples represent the minimum required components. Some designs may require additional components. 3.3V 1k PWMx 2.2k Figure B.1 Fan Drive Circuitry (Apply to PWM Driving Two Fans) Revision 0.32 (06-23-08) Fan Control Device with High Frequency PWM and Temperature Monitors 3.3V MMBT3904 MMBT2222 MMBT2222 80 DATASHEET Datasheet 12V M Fan1 M Fan2 SMSC EMC2300 ...
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... Fan Note: For fans controlled directly suggested to im plem ent the optional diode (D1) to protect the tachom eter input from large voltage spikes generated by the fan. Figure B.3 Fan Tachometer Circuitry (Apply to Each Fan) SMSC EMC2300 470 MMBT2222 3.3V 10k ...
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... Figure B.4 Remote Diode (Apply to Remote2 Lines) Notes: 1. 2.2nF cap is optional and should be placed close to the EMC2300 if used. 2. The voltage at PWM3 must be at least 2.0V to avoid triggering Address Enable. 3. The Remote Diode + and Remote Diode - tracks should be kept close together, in parallel with grounded guard tracks on each side ...