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EMC2300 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 EMC2300
기능 Fan Control Device
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EMC2300 데이터시트, 핀배열, 회로
EMC2300
Fan Control Device with
High Frequency PWM and
Temperature Monitors
PRODUCT FEATURES
Datasheet
„ 3.3 Volt Operation (5 Volt Tolerant Input Buffers)
„ SMBus 2.0 Compliant Interface (Fixed, not
Discoverable) with Three Slave Address Options
„ Fan Control
— PWM (Pulse width Modulation) Outputs (3)
— Fan Tachometer Inputs (4)
— Programmable automatic fan control based on
temperature
— Backwards compatible with fans requiring lower
frequency PWM drive
— High frequency fan support for 4 wire fans
— One fan can be controlled from as many as 3
temperature zones
— Fan ramp rate control for acoustic noise reduction
„ Power Savings Modes
— Two monitoring modes: continuous or cycling (for power
savings)
— Two low power modes when monitoring if off: Sleep and
Shutdown
„ Temperature Monitor
— Monitoring of Two Remote Thermal Diodes (+/- 3 deg
C accuracy)
— Internal Ambient Temperature Measurement
— Limit Comparison of all Monitored Values
— Interrupt Pin for out-of-limit Temperature Indication
„ Voltage Monitor
— Monitors VCC and VCCP
— Limit Comparison of all Monitored Values
— Interrupt Pin for out-of-limit Voltage Indication
„ XOR Tree Test Mode
„ 16-Pin SSOP Lead-Free RoHS Compliant Package
ORDER NUMBERS:
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
DATASHEET
Revision 0.32 (06-23-08)




EMC2300 pdf, 반도체, 판매, 대치품
Fan Control Device with High Frequency PWM and Temperature Monitors
Datasheet
7.1.2
7.1.3
7.1.4
7.1.5
Device Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
PWM Fan Speed Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Fan Speed Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Linking Fan Tachometers to PWMs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Chapter 8 Register Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.1 Undefined Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
8.2 Defined Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
8.2.1 Registers 20-24h: Voltage Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
8.2.2 Registers 25-27h: Temperature Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
8.2.3 Registers 28-2Fh: Fan Tachometer Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
8.2.4 Registers 30-32h: Current PWM Duty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8.2.5 Register 3Eh: Company ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.2.6 Register 3Fh: Version / Stepping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.2.7 Register 40h: Ready/Lock/Start Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.2.8 Register 41h: Interrupt Status Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.2.9 Register 42h: Interrupt Status Register 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.2.10 Registers 44-4Dh: Voltage Limit Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.2.11 Registers 4E-53h: Temperature Limit Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8.2.12 Registers 54-5Bh: Fan Tachometer Low Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.2.13 Registers 5C-5Eh: PWM Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.2.14 Registers 5F-61h: Zone Temperature Range, PWM Frequency . . . . . . . . . . . . . . . . . . . 61
8.2.15 Register 62h, 63h: PWM Ramp Rate Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.2.16 Registers 64-66h: Minimum PWM Duty Cycle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8.2.17 Registers 67-69h: Zone Low Temperature Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
8.2.18 Registers 6A-6Ch: Absolute Temperature Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
8.2.19 Register 6F: XOR Test Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
8.2.20 Register 7Ch: Special Function Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
8.2.21 Register 7Eh: Interrupt Enable 1 Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
8.2.22 Register 7Fh: Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
8.2.23 Register 80h: Interrupt Enable 2 Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
8.2.24 Register 81h: TACH_PWM Association Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
8.2.25 Register 82h: Interrupt Enable 3 Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
8.2.26 Registers 85h-88h: A/D Converter LSbs Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.2.27 Registers 90h-93h: TachX Option Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.2.28 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)
4
DATASHEET
SMSC EMC2300

4페이지










EMC2300 전자부품, 판매, 대치품
Fan Control Device with High Frequency PWM and Temperature Monitors
Datasheet
Table 8.44 Register 80h: Interrupt Enable 2 Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Table 8.46 Register 81h: TACH_PWM Association Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
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. . . . . . . . . . . . . . . . . . 79
SMSC EMC2300
7
DATASHEET
Revision 0.32 (06-23-08)

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Fan Control Device

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