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EMC2102 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 EMC2102
기능 RPM-Based Fan Controller
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EMC2102 데이터시트, 핀배열, 회로
EMC2102
RPM-Based Fan
Controller with HW
Thermal Shutdown
PRODUCT FEATURES
Datasheet
www.DataSheet4U.com
GENERAL DESCRIPTION
The EMC2102 is an SMBus, closed-loop, RPM-based
fan controller/driver with hardware (HW) thermal
shutdown and reset controller. The EMC2102 is
packaged in a thermally enhanced, compact, 5x5, 28-
pin lead-free RoHS compliant QFN package.
The EMC2102 utilizes Beta Compensation and
Resistance Error Correction (REC) to accurately monitor
three external temperature zones. These features allow
great accuracy for CPU substrate thermal diodes on
multiple process geometries as well as with discrete
diode-connected transistors. Both Beta Compensation
and REC can be disabled on the EMC2102 to maintain
accuracy when monitoring AMD thermal diodes.
The EMC2102 includes a closed-loop RPM based Fan
Control Algorithm that integrates a linear fan driver
capable of sourcing 600mA of current. The fan control
algorithm is designed to work with fans that operate up
to 16,000 RPMs.
The EMC2102 provides a stand-alone HW thermal
shutdown block. The HW thermal shutdown logic can be
configured for a few common configurations based on
the strapping level of the SHDN_SEL pin on the PCB.
The HW thermal shutdown point can be set in 1°C
increments by using a discrete resistor divider
implemented on the TRIP_SET pin.
The EMC2102 also provides 5V supply ‘power good’
function with a threshold of 4.5V. This function is
provided on the RESET# pin.
FEATURES
„ Beta Compensation Allows Accurate Temperature
Measurement on 65nm CPU/GPUs
„ Closed-Loop RPM Based Fan Controller
— Accepts External Clock Source To Achieve 2%
Accuracy
„ Integrated Linear Fan Driver
— 600mA Drive Capability
„ HW Thermal Shutdown (SYS_SHDN#)
— 1°C Incremental Set Points For Thermal Shutdown
— Cannot be disabled by software
„ Provides Reset Function (RESET#) On 5V Supply
„ Three Remote Thermal Zones
±1°C Accuracy (60°C to 100°C)
— 1°C Resolution
„ Resistance Error Correction On Thermal ‘Diode’
Channels
— Eliminates Temperature Offset Due To Series
Resistance From PCB Traces And Thermal ‘Diode’
„ Thermally Enhanced, 28-pin, 5x5 QFN Lead-free
RoHS Compliant Package
„ Operates From Single 3.0 - 3.6V Supply
— 5V Supply For Linear Fan Driver
„ Software Configurable ALERT# Signal For Diode
Fault, Fan Stall Or System Warning
APPLICATIONS
„ Notebook Computers
„ Desktop Computers
„ Embedded Applications
SMSC EMC2102
DATASHEET
Revision 1.95 (10-19-06)




EMC2102 pdf, 반도체, 판매, 대치품
RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
6.7
6.8
6.9
6.10
6.11
6.12
6.13
6.14
6.15
6.16
6.17
6.18
6.19
6.20
6.21
Interrupt Status Register 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Interrupt Mask Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Beta Configuration Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
REC Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Temperature Limit Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Fan Driver Setting Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Fan Configuration Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Fan Spin Up Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Fan Step Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Fan Minimum Drive Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Valid TACH Count Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
TACH Target Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
TACH Reading Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Product ID Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Revision Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Chapter 7 Package Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Appendix A TACH Reading Table - 2000 RPM Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Appendix B TACH Reading Table - 500RPM Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Revision 1.95 (10-19-06)
4
DATASHEET
SMSC EMC2102

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EMC2102 전자부품, 판매, 대치품
RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
Chapter 1 Block Diagram
TRIP_SET
DP1
DN1
DP2
DN2
DP3
DN3
External
Temp
Diodes
Internal
Temp
Diode
VDD_5V
Critical / Thermal
Shutdown Logic
Reset
Generator
Analog
Mux
11 bit Σ Δ
ADC
Bandgap
Reference
8-bit DAC
Automatic
Fan Control
Algorithms
Ext Temp
Limit
Registers
Ext. Temp Registers
Voltage Reading
Voltage ->
Temperature
Converison
High Side
Fan Driver
TACH
Monitor
SMBus
Slave
Protocol
SMCLK
SMDATA
ALERT#
POWER_OK
Register
Set and
Logic
FAN_MODE
Figure 1.1 EMC2102 Block Diagram
SMSC EMC2102
7
DATASHEET
Revision 1.95 (10-19-06)

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