Fan Control Device with Hardware Monitoring and Acoustic Noise Reduction Features
Datasheet
Table 3.1 EMC6D102 Pin Description (continued)
BUFFER
REQUIREMENT
BUFFER PER FUNCTION POWER
NAME
FUNCTION
TYPE
(Note 3.1)
WELL
NOTES
TACH1
TACH2
Input for monitoring a fan tachometer input.
Input for monitoring a fan tachometer input.
IM
IM
IM
IM
VCC
VCC
VCC
TACH3
/INT#
Input for monitoring a fan tachometer input.
/Interrupt output to indicate a thermal and/or
voltage event.
IMOD3
IM /OD3
TACH4
/Address
Select
Input for monitoring a fan tachometer input.
If in Address Select Mode, determines the
SMBus address of the device.
IM
IM
VCC
PWM1
/xTest Out
PWM Output 1 controlling speed of fan.
When in XOR tree test mode, functions as
XOR Tree output.
O8
OD8/O8
OD8/OD8
OD8/I
VCC
VCC
VCC
PWM2
/INT#
PWM Output 2 controlling speed of fan.
/Interrupt output to indicate a thermal and/or
voltage event.
OD8
IOD8
PWM3
/Address
Enable#
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).
VCC
Positive Power Supply. Nominal 3.3V.
VCC is monitored by the Hardware
Monitoring Block.
(Can be powered by +3.3V Standby power if
monitoring in low power states is required.)
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
DESCRIPTION
Digital Input
Analog Input, Hardware Monitoring Block.
Input/Output (Open Drain), 3mA sink.
Output, 8mA sink, 4mA source.
IMOD3
O8
OD8
IO8
Output (Open Drain), 8mA sink.
Input/Output, 8mA sink, 4mA source.
SMSC EMC6D102
11
Revision 0.4 (06-15-06)
DATASHEET
SMSC [ SMSC CORPORATION ]
