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Número de pieza | EMC6D103S | |
Descripción | Fan Control Device | |
Fabricantes | SMSC Corporation | |
Logotipo | ||
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No Preview Available ! EMC6D103S
Fan Control Device with
High Frequency PWM
Support and Hardware
Monitoring 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)
— 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
Datasheet
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
5 VID (Voltage Identification) Inputs
XOR Tree Test Mode
24-Pin SSOP Green, Lead-free Package
ORDER NUMBER(S):
EMC6D103S-CZC FOR 24 PIN, SSOP PACKAGE (LEAD-FREE)
EMC6D103S-CZC-TR FOR 24 PIN, SSOP PACKAGE (LEAD-FREE, TAPE AND REEL)
EVALUATION BOARD IS AVAILABLE
SMSC EMC6D103S
DATASHEET
Revision 0.2 (06-14-06)
1 page Fan Control Device with High Frequency PWM Support and Hardware Monitoring Features
Datasheet
List of Figures
Figure 2.1 EMC6D103S 24 Pin SSOP Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 5.1 Address Selection on EMC6D103S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 6.3 Interrupt Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 7.1 Automatic Fan Control Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 7.2 Automatic Fan Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 7.4 Spin Up Reduction Enabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 7.6 Illustration of PWM Ramp Rate Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 7.7 PWM and Tachometer Concept. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 8.11 Fan Activity Above Low Temp Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Figure 9.1 PWMx Output Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Figure 9.4 SMBus Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Figure 10.1 24-Pin SSOP Package Outline, 0.150” Wide Body, 0.025” Pitch. . . . . . . . . . . . . . . . . . . . . . 80
Figure B.1 Fan Drive Circuitry (Apply to PWM Driving Two Fans) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Figure B.2 Fan Drive Circuitry (Apply to PWM Driving One Fan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Figure B.3 Fan Tachometer Circuitry (Apply to Each Fan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Figure B.4 Remote Diode (Apply to Remote2 Lines). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Figure B.5 Suggested Minimum Track Width and Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
SMSC EMC6D103S
5
DATASHEET
Revision 0.2 (06-14-06)
5 Page Fan Control Device with High Frequency PWM Support and Hardware Monitoring Features
Datasheet
Table 3.1 Pin Description (continued)
PIN # NAME
FUNCTION
BUFFER
REQUIREMENT
BUFFER PER FUNCTION
TYPE
(Note 3.1)
POWER
WELL
NOTES
HARDWARE MONITORING BLOCK (24)
11 TACH1 Input for monitoring a fan tachometer input. IM
12 TACH2 Input for monitoring a fan tachometer input. IM
9
TACH3
/INT#
Input for monitoring a fan tachometer input.
/Interrupt output to indicate a thermal
IMOD3
and/or voltage event.
14
TACH4 Input for monitoring a fan tachometer input.
/Address If in Address Select Mode, determines the
IM
Select SMBus address of the device.
24 PWM1 PWM Output 1 controlling speed of fan.
/xTest Out When in XOR tree test mode, functions as
XOR Tree output.
O8
10 PWM2 PWM Output 2 controlling speed of fan.
/INT# /Interrupt output to indicate a thermal
and/or voltage event.
OD8
13 PWM3 PWM Output 3 controlling speed of fan.
IOD8
/Address If pulled to ground at power on, enables
Enable#
Address Select Mode (Address Select pin
controls SMBus address of the device).
4 VCC Positive Power Supply. Nominal 3.3V.
VCC is monitored by the Hardware
Monitoring Block.
IM
IM
IM /OD3
IM
OD8/O8
OD8/OD8
OD8/I
VCC
VCC
VCC
VCC
VCC
VCC
VCC
(Can be powered by +3.3V Standby power
if monitoring in low power states is
required.)
3 VSS Analog Ground.
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 EMC6D103S
11
DATASHEET
Revision 0.2 (06-14-06)
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet EMC6D103S.PDF ] |
Número de pieza | Descripción | Fabricantes |
EMC6D103 | FAN CONTROL DEVICE WITH HIGH FREQUENCY PWM | SMSC Corporation |
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