emc2105 Standard Microsystems Corp., emc2105 Datasheet - Page 11

• Manufacturer Part Number: emc2105
• Description: Emc2105 Rpm-based High Side Fan Controller With Hardware Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

RPM-Based High Side Fan Controller with Hardware Thermal Shutdown
Datasheet
SMSC EMC2105
PIN NUMBER
EMC2105
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
TRIP_SET / VIN4
CLK_IN / GPIO1
DP1 / VREF_T1
SYS_SHDN#
DN1 / VIN1
SHDN_SEL
PIN NAME
FAN_OUT
FAN_OUT
SMDATA
ALERT#
VDD_5V
VDD_5V
SMCLK
TACH1
GND
VDD
Table 2.1 Pin Description for EMC2105
DATASHEET
DN1 - Negative (cathode) analog input for
VREF_T1 - Reference output for use with
VIN1 - General voltage input for use with
DP1 - Positive (anode) analog input for
TRIP_SET - Determines HW Shutdown
Determines HW Shutdown temperature
Active low interrupt - requires external
temperature features for the hardware
GPO1 - General Purpose open drain
SMBus clock input - requires external
Active low Critical System Shutdown
Thermal / Critical shutdown disabled
GPO1 - General Purpose push/ pull
features and measurement channel
VIN4 - General voltage input when
SMBus data input/output - requires
CLK_IN - 32.768KHz clock input.
Supply for High Side Fan Driver
Supply for High Side Fan Driver
a thermistor and to drive VIN3
GPI1 - General Purpose Input
11
High Side Fan Driver Output
High Side Fan Driver Output
Tachometer input for Fan 1
External Diode 1 (default)
External Diode 1 (default)
external pull-up resistor
Ground connection
shutdown channel
PIN FUNCTION
pull-up resistor.
pull-up resistor
Power Supply
a thermistor
(default)
Output.
Output
output
Revision 1.74 (05-08-08)
DIOD (5V)
DIOD (5V)
PIN TYPE
AIO (2V)
AIO (2V)
OD (5V)
OD (5V)
AO (2V)
AI (2V)
DI (5V)
DI (5V)
DI (5V)
DI (5V)
DI (5V)
AI (2V)
AI (2V)
Power
Power
Power
Power
Power
Power
AIO