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EMC2101 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 EMC2101
기능 SMBus Fan Control
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EMC2101 데이터시트, 핀배열, 회로
EMC2101
SMBus Fan Control
with 1°C Accurate
Temperature Monitoring
PRODUCT FEATURES
Datasheet
General Description
The EMC2101 is an SMBus 2.0 compliant, integrated
fan control solution complete with two temperature
monitors, one external and one internal. Each
temperature channel has programmable high limits that
can assert an interrupt.
The fan drive is selectable as a Pulse Width Modulator
(PWM) or Linear (DAC) output. The fan control output,
whether the PWM or DAC drive circuit, uses an eight
position look-up table to allow the user to program the
fan speed profile based on temperature. The DAC out-
put ranges from 0V to VDD with up to 6 bit resolution
while the PWM output has a range of 0% to 100% with
up to 64 steps.
The EMC2101 has an option to automatically upload the
contents of an attached SMBus compatible EEPROM for
auto-programming upon power up.
Advanced thermal sensing enables reduced validation
and characterization time as well as accurately operat-
ing with smaller-geometry processors. Resistance Error
Correction (REC) automatically corrects the offset errors
of board trace and device resistance, up to 100Ω. Auto-
matic Beta Compensation allows the user the flexibility
to design applications that include processor substrate
transistors.
Features
„ Automatic Beta Compensation
„ Resistance Error Correction
„ Self-programming with available SMBus compatible
EEPROM
„ Selectable PWM or DAC fan driver output
„ Temperature Monitors
— External channel ±1°C accuracy
— Internal channel ±2°C accuracy
„ 3.3 Volt Operation (5 Volt Tolerant Input Buffers)
„ SMBus 2.0 Compliant Interface, supports TIMEOUT
„ 8-Pin MSOP Lead-free RoHS Compliant Packages
„ 8-Pin SOIC Lead-free RoHS Compliant Package
Applications
„ Graphics Processors
„ Embedded Application Fan Drive
„ PWM Controller + Temp Sensor
Block Diagram
VDD
EMC2101
Switching
Current
DP
Analog
Mux
ΔΣ ADC
DN
Internal
Temp Diode
External
Temperature
Register
Internal
Temperature
Register
FAN
PWM Driver
DAC Driver
Fan Control
Logic
SMSC EMC2101
GND
Status Registers
DATASHEET
Address Pointer Register
Conversion Rate Register
Internal High Limit Register
External High Limit Register
External TCRIT Limit Register
Fan Control
Look-Up Table
Configuration Register
Interupt Masking
SMCLK
SMDATA
ALERT / TACH
Revision 2.54 (06-16-09)




EMC2101 pdf, 반도체, 판매, 대치품
SMBus Fan Control with 1°C Accurate Temperature Monitoring
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
6.22
6.23
6.24
6.25
6.26
Temperature Limit Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
External Temperature Force Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
One Shot Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Scratchpad Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Alert Mask Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
External Ideality Factor Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Beta Compensation Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
TACH Reading Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
TACH Limit Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Fan Configuration Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Fan Spin Up Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Fan Setting Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
PWM Frequency Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
PWM Frequency Divide Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Fan Control Look-Up Table Hysteresis Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Fan Control Look-Up Table Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Averaging Filter Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Product ID Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Manufacturer ID Register (FEh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Revision Register (FFh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Chapter 7 Package Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Appendix A Advanced PWM Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Appendix B TACH Reference Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Revision 2.54 (06-16-09)
4
DATASHEET
SMSC EMC2101

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EMC2101 전자부품, 판매, 대치품
SMBus Fan Control with 1°C Accurate Temperature Monitoring
Datasheet
Chapter 1 Device Selection
The EMC2101 is available with the following options and configurations as shown in Table 1.1.
PART NUMBER
EMC2101
Table 1.1 Device Selection
FAN OPERATION
PWM Drive, 0% drive
COMMUNICATIONS
SMBus
EMC2101-R
Selected via pull-up
Selected via pull-up
PACKAGE
8 pin SOIC and
8 pin MSOP
8 pin MSOP
PRODUCT ID
16h
28h
SMSC EMC2101
7
DATASHEET
Revision 2.54 (06-16-09)

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부품번호상세설명 및 기능제조사
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SMBus Fan Control

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