EMC2101-ACZT-TR SMSC, EMC2101-ACZT-TR Datasheet - Page 38

• Manufacturer Part Number: EMC2101-ACZT-TR
• Description: Industrial Temperature Sensors Sngl Fan Contrllr
• Manufacturer: SMSC

Specifications of EMC2101-ACZT-TR

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

Revision 2.54 (06-16-09)
6.12
ADDR.
17h
SETTING
0Ch
0Dh
0Ah
0Bh
08h
09h
R/W
R/W
Bit 6 - INT_MSK - Disables interrupts for the Internal Diode.
Bit 4 - HIGH_MSK - Disables interrupts for the External Diode high limit.
Bit 3 - LOW_MSK - Disables interrupts for the External Diode low limit.
Bit 1 - TCRIT_MSK - Disables interrupts for the TCRIT Limit.
Bit 0 - TACH_MSK - Disables interrupts for the TACH Limit.
This register stores the ideality factor that is automatically applied to the external diode. The Ideality
factor is a 6 bit value that allows for a bi-directional trim centered on an ideality factor of 1.008.
Table 6.13
External Ideality Factor Register
‘0’ (default) - The Internal Diode will generate an interrupt if its measured temperature exceeds the
Internal Diode high limit.
‘1’ - the Internal Diode will not generate interrupts.
‘0’ (default) - The External Diode will generate an interrupt if its measured temperature exceeds
the External Diode high limit.
‘1’ - the External Diode will not generate an interrupt when the high limit is exceeded.
‘0’ (default) - The External Diode will generate an interrupt if its measured temperature drops below
the External Diode low limit.
‘1’ - the External Diode will not generate an interrupt when the temperature drops below the low
limit.
‘0’ (default) - An interrupt will be generated if the External Diode Temperature exceeds TCRIT.
‘1’ - An interrupt will not be generated if TCRIT is exceeded.
‘0’ (default) - An interrupted will be generated if the measured TACH value exceeds the TACH Limit
(indicating that the fan speed is too slow).
‘1’ - An interrupt will not be generated if the TACH limit is exceeded.
Ideality Factor
REGISTER
FACTOR
defines each setting and the corresponding Ideality factor.
0.9949
0.9962
0.9975
0.9988
1.0001
1.0014
External
Table 6.12 External Ideality Factor Register
Table 6.13 Ideality Factor Look-Up Table
B7
-
SETTING
1Ch
1Dh
1Ah
1Bh
18h
19h
DATASHEET
B6
-
38
B5
SMBus Fan Control with 1°C Accurate Temperature Monitoring
FACTOR
1.0159
1.0172
1.0185
1.0200
1.0212
1.0226
B4
IDCF[5:0]
B3
B2
SETTING
2Ah
2Bh
2Ch
2Dh
28h
29h
B1
B0
SMSC EMC2101
FACTOR
1.0371
1.0384
1.0397
1.0410
1.0423
1.0436
DEFAULT
Datasheet
12h