emc2104 Standard Microsystems Corp., emc2104 Datasheet - Page 12

• Manufacturer Part Number: emc2104
• Description: Emc2104 Dual Rpm-based Pwm Fan Controller With Hardware Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

Revision 1.74 (05-08-08)
PIN NUMBER
EMC2104
11
12
13
14
15
16
17
18
19
20
DP3 / DN4 / VREF_T3
DN3 / DP4 / VIN3
TRIP_SET / VIN4
DP2 / VREF_T2
TACH2 / GPIO2
SHDN_SEL
DN2 / VIN2
PIN NAME
Table 2.1 Pin Description for EMC2104 (continued)
TACH1
PWM1
n/c
DATASHEET
PWM1 - Open Drain PWM drive output for
(anode) Analog Input for External Diode 4
DP3 / DN4 - Positive (anode) analog input
VREF_T3 - Reference output for use with
DN2 - Negative (cathode) analog input for
VREF_T2 - Reference output for use with
(cathode) analog input for External Diode
VIN3 - General voltage input for use with
VIN2 - General voltage input for use with
PWM1 - Push-Pull PWM drive output for
Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown
DN3 / DP4 - Negative (cathode) analog
TRIP_SET - Determines HW Shutdown
Determines HW Shutdown temperature
DP2 - Positive (anode) analog input for
input for External Diode 3 and positive
temperature features for the hardware
GPO2 - General Purpose open drain
TACH2 - Tachometer input for Fan 2
Thermal / Critical shutdown disabled
features and measurement channel
GPO2 - General Purpose push-pull
VIN4 - General voltage input when
for External Diode 3 and negative
a thermistor and to drive VIN3
a thermistor and to drive VIN2
GPI2 - General Purpose Input
12
Tachometer input for Fan 1
Not Internally Connected
shutdown channel
External Diode 2
External Diode 2
PIN FUNCTION
a thermistor
a thermistor
(default)
(default)
(default)
(default)
(default)
(default)
Output
Output
Fan 1
Fan 1
4
PIN TYPE
AIO (2V)
AIO (2V)
AIO (2V)
AIO (2V)
OD (5V)
OD (5V)
SMSC EMC2104
AO (2V)
AO (2V)
DI (5V)
DI (5V)
DI (5V)
AI (2V)
AI (2V)
AI (2V)
AI (2V)
AIO
N/A
DO
DO
Datasheet