EMC1102
SST Compliant
Hardware Monitor with
Two Temperature
Channels
PRODUCT FEATURES
GENERAL DESCRIPTION
The EMC1102 is a one-wire sensor that is capable of
monitoring up to two temperature zones for an Intel PC
platform containing an SST host. The two temperature
zones consist of an internal temperature diode and an
externally connected temperature diode. In cooperation
with a host device, thermal management and fan control
can be performed. Communication takes place over a
one-wire SST based interface. The internal 11-bit delta-
sigma ADC architecture provides superb linearity, high
accuracy, and excellent noise immunity.
APPLICATIONS
Desktop PCs, Servers and Workstations
FEATURES
Single Wire Interface (SST based)
—
—
—
—
SST 1.0 compliant
Fixed Address, Discoverable Device
Nine programmable addresses
Supports FCS Abort functionality not available in SST
0.9 compliant devices
Data Brief
Resistance Error Correction
Ideality Configuration
Beta Compensation
External Temperature Monitor
— 0.125°C resolution
— ±1°C Accuracy (50°C to 70°C)
— Diode Fault Reporting
Internal Temperature Monitor
— Range -40°C to +125°C
— 0.125°C resolution
— ±2°C Accuracy (40°C to 70°C)
Supply
— 3.0V to 3.6V
SIMPLIFIED BLOCK DIAGRAM
EMC1102
Switching
Current
External Temp
Register
Analog Mux
and Anti-Alias Filter
Configuration
Register
SST One-Wire Interface
ADD1
ADD0
DP
DN
11-bit
delta-sigma
ADC
Internal Temp
Register
Digital Mux
and
Byte Interlock
Internal
Temp
Diode
Status Register
SST
SMSC EMC1102
PRODUCT PREVIEW
Revision 2.55 (12-06-06)
SMSC [ SMSC CORPORATION ]
