EMC2102-DZK-TR SMSC, EMC2102-DZK-TR Datasheet - Page 35

• Manufacturer Part Number: EMC2102-DZK-TR
• Description: Industrial Temperature Sensors RPM Fan Contrllr
• Manufacturer: SMSC

Specifications of EMC2102-DZK-TR

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
SMSC EMC2102
6.5
21h
ADDRESS
Bit 4 - SYS2 - enables the high temperature limit for the External Diode 2 channel to trigger the Critical
/ Thermal Shutdown circuitry (see
Bit 3 - SYS1 - enables the high temperature limit for the External Diode 1 channel to trigger the Critical
/ Thermal Shutdown circuitry (see
Bit 2 - FORMAT - determines the data format that is displayed in the Temperature Data Registers. The
data format for the Critical Thermal Shutdown Threshold Register will not be changed. If the
temperature data format is changed, the limit register values must be changed to match the newer
format.
Bit 0 - LOCK - this bit acts on all registers that are designated SWL. When this bit is set, the locked
registers become read only and cannot be updated.
The Conversion Rate Register controls the conversion rate of the temperature monitoring as well as
the fault queue. The Conversion Rate Register is software locked.
Bit 1 - 0 - CONV[1:0] - determines the conversion rate of the temperature monitoring. This conversion
rate does not affect the fan driver. The supply current from VDD_3V is nominally dependent upon the
conversion rate and the average current will increase as the conversion rate increases.
Conversion Rate Register
Conversion
Rate
REGISTER
‘1’ - the External Diode 3 channel high limit will be linked to the SYS_SHDN# pin. If the temperature
exceeds the limit then the SYS_SHDN# pin will be asserted. The ALERT# pin will be asserted
normally.
‘0’ (default) - the External Diode 2 channel high limit will not be linked to the SYS_SHDN# pin. If
the temperature exceeds the limit, the ALERT# pin will be asserted normally.
‘1’ - the External Diode 2 channel high limit will be linked to the SYS_SHDN# pin. If the temperature
exceeds the limit then the SYS_SHDN# pin will be asserted. The ALERT# pin will be asserted
normally.
‘0’ (default) - the External Diode 1channel high limit will not be linked to the SYS_SHDN# pin. If
the temperature exceeds the limit, the ALERT# pin will be asserted normally.
‘1’ - the External Diode 1 channel high limit will be linked to the SYS_SHDN# pin. If the temperature
exceeds the limit then the SYS_SHDN# pin will be asserted. The ALERT# pin will be asserted
normally.
‘0’ (default) - the temperature data will be in standard 2’s complement format.
‘1’ - the temperature data will be in offset 2’s complement format.
‘0’ (default) - all SWL registers can be updated normally.
‘1’ - all SWL registers cannot be updated and a hard-reset is required to unlock them.
-
B7
Table 6.7 Conversion Rate Register
-
B6
Section 5.7, "Critical/Thermal
Section
DATASHEET
-
B5
35
5.7).
-
B4
-
B3
-
B2
Shutdown").
CONV[1:0]
B1
Revision 2.02 (05-17-07)
B0
02h
DEFAULT