EMC2102 Standard Microsystems Corporation, EMC2102 Datasheet - Page 9

• Manufacturer Part Number: EMC2102
• Description: Rpm-based Fan Controller with HW Thermal Shutdown
• Manufacturer: Standard Microsystems Corporation

RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
SMSC EMC2102
2.2
PIN
10
12
13
14
15
16
17
18
19
20
21
22
23
11
1
2
3
4
5
6
7
8
9
VDD_3V
DN1
DP1
DN2
DP2
DN3
DP3
N/C
SHDN_SEL
FAN_MODE
TRIP_SET
SYS_SHDN#
THERMTRIP#
POWER_OK
N/C
RESET#
CLK_SEL
CLK_IN
ALERT#
GND
N/C
SMDATA
SMCLK
Pin Description for EMC2102
NAME
Supply Connection of 3.3V.
Negative (cathode) Analog Input for
External Diode 1.
Positive (anode) Analog Input for
External Diode 1.
Negative (cathode) Analog Input for
External Diode 2.
Positive (anode) Analog Input for
External Diode 2.
Negative (cathode) Analog Input for
External Diode 3.
Positive (anode) Analog Input for
External Diode 3.
Not internally connected.
Determines HW Shutdown
temperature channel (see
Selects power-up default for fan drive
setting.
Voltage input to determine HW
Shutdown threshold temperature
Active low Critical System Shutdown
output
Active low Critical temperature limit
signal from the CPU or chipset.
Active high power good input.
Not internally connected.
Active low reset output.
Selects internal oscillator or external
clock.
32.768KHz clock input.
Active low interrupt.
GND connection.
Not internally connected.
SMBus data input/output.
SMBus clock input.
Table 2.1 Pin Description
DATASHEET
FUNCTION
9
Table
5.4.)
Power
AIO
AIO
AIO
AIO
AIO
AIO
N/A
DIT
DIT
AI
OD (5V)
IP
DI (5V)
N/A
DO
DI (5V)
DI (5V)
OD (5V)
Power
N/A
DIOD (5V) - requires external upll-
up resistor
DI (5V) - requires external pull-up
resistor
TYPE
Revision 1.95 (10-19-06)