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PDF EMC6D102 Data sheet ( Hoja de datos )
| Número de pieza | EMC6D102 | |
| Descripción | Fan Control Device | |
| Fabricantes | SMSC Corporation | |
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EMC6D102
Fan Control Device with
Hardware Monitoring and
Acoustic Noise Reduction
Features
PRODUCT FEATURES
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)
— Individual status and enable bits per tach input
— Programmable automatic fan control based on
temperature
— Fan ramp rate control for acoustic noise reduction
Temperature Monitor
— Monitoring of Two Remote Thermal Diodes (+/- 3 deg
C accuracy)
— Internal Ambient Temperature Measurement
— Limit Comparison of all Monitored Values
— Individual status and enable bits per thermal input
— Interrupt Pin for out-of-limit Temperature Indication
— Configurable offset for internal or external temperature
channels.
— Supports 4 programmable temperature averaging
modes
— 2 monitoring modes: Continuous or Cycle (Power
Saving mode)
— Offers 2 Low Power Modes when monitoring is off:
Sleep and Shutdown
Datasheet
Voltage Monitor
— Monitor Power supplies (+2.5V, +5V, +12V, Vccp, and
VCC)
— Individual status and enable bits per voltage input
— Limit Comparison of all Monitored Values
— Interrupt Pin for out-of-limit Voltage Indication
— Supports 4 programmable voltage averaging modes
— 2 monitoring modes: Continuous or Cycle (Power
Saving mode)
— Offers 2 Low Power Modes when monitoring is off:
Sleep and Shutdown
5 VID (Voltage Identification) inputs
XOR Tree test mode
24-pin, SSOP Lead-Free RoHS Compliant package
SMSC EMC6D102
DATASHEET
Revision 0.4 (09-25-07)
1 page  
Fan Control Device with Hardware Monitoring and Acoustic Noise Reduction Features
Datasheet
Chapter 9 Timing Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
9.1 PWM Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
9.2 SMBus Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Chapter 10 Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Appendix A ADC Voltage Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Appendix B Example Fan Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
SMSC EMC6D102
5
DATASHEET
Revision 0.4 (09-25-07)
5 Page 
Fan Control Device with Hardware Monitoring and Acoustic Noise Reduction Features
Datasheet
Table 3.1 EMC6D102 Pin Description (continued)
NAME
TACH1
TACH2
TACH3
/INT#
TACH4
/Address
Select
PWM1
/xTest Out
PWM2
/INT#
PWM3
/Address
Enable#
VCC
VSS
FUNCTION
BUFFER
REQUIREMENT
BUFFER PER FUNCTION POWER
TYPE
(Note 3.1)
WELL
Input for monitoring a fan tachometer input.
Input for monitoring a fan tachometer input.
Input for monitoring a fan tachometer input.
/Interrupt output to indicate a thermal and/or
voltage event.
Input for monitoring a fan tachometer input.
If in Address Select Mode, determines the
SMBus address of the device.
IM
IM
IMOD3
IM
IM
IM
IM /OD3
IM
VCC
VCC
VCC
VCC
PWM Output 1 controlling speed of fan.
When in XOR tree test mode, functions as
XOR Tree output.
PWM Output 2 controlling speed of fan.
/Interrupt output to indicate a thermal and/or
voltage event.
PWM Output 3 controlling speed of fan.
If pulled to ground at power on, enables
Address Select Mode (Address Select pin
controls SMBus address of the device).
Positive Power Supply. Nominal 3.3V.
VCC is monitored by the Hardware
Monitoring Block.
O8
OD8
IOD8
OD8/O8
OD8/OD8
OD8/I
VCC
VCC
VCC
(Can be powered by +3.3V Standby power if
monitoring in low power states is required.)
Analog Ground.
NOTES
Note: The “#” as the suffix of a signal name indicates an “Active Low” signal.
Note 3.1 Buffer types per function on multiplexed pins are separated by a slash “/”. Buffer types in
parenthesis represent multiple buffer types for a single pin function.
Note 3.2 This analog input is backdrive protected.
3.2 Buffer Type Description
Note: The buffer type values are specified at VCC=3.3V
Table 3.2 Buffer Type Descriptions
BUFFER TYPE
IM
IAN
IMOD3
O8
OD8
IO8
DESCRIPTION
Digital Input
Analog Input, Hardware Monitoring Block.
Input/Output (Open Drain), 3mA sink.
Output, 8mA sink, 4mA source.
Output (Open Drain), 8mA sink.
Input/Output, 8mA sink, 4mA source.
SMSC EMC6D102
11
DATASHEET
Revision 0.4 (09-25-07)
11 Page | ||
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| PDF Descargar | [ Datasheet EMC6D102.PDF ] | |
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