EMC6D103-CZC-TR SMSC, EMC6D103-CZC-TR Datasheet - Page 74

• Manufacturer Part Number: EMC6D103-CZC-TR
• Description: Industrial Temperature Sensors Auto Fan Contrllr Up to 4 Fans
• Manufacturer: SMSC

Specifications of EMC6D103-CZC-TR

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

Revision 0.3 (03-01-07)
8.2.22
8.2.23
Register
Address
Register
Address
6Fh
6Dh
6Eh
Read/
Read/
Write
Write
R/W
Registers 6D-6Eh: Zone Hysteresis Registers
R/W
R/W
These registers become read only when the Lock bit is set. Any further attempts to write to these
registers shall have no effect.
If the temperature is above the Zone x Low Temp Limit, then drops below Zone x Low Temp Limit, the
following will occur:
The fan will remain on, at Fan PWM Minimum, until the temperature goes a certain amount below the
associated zones low temperature limit (see Zone x Low Temp Limit registers). That is, when the
temperature is less than the temperature limit minus the hysteresis value, the fan will turn off.
The Hysteresis registers control this amount. See below table for details.
Register 6F: XOR Test Register
This register becomes read only when the Lock bit is set. Any further attempts to write to this register
shall have no effect.
Zone 1, Zone 2 Hysteresis
ABSOLUTE LIMIT
Table 8.39 Absolute Limit vs. Register Setting (continued)
Zone 3, Hysteresis
XOR Test Register
Table 8.40 Registers 6D-6Eh: Zone Hysteresis Registers
Register Name
Register Name
127 ° c
50 ° c
.
.
.
Table 8.42 Register 6F: XOR Test Register
Fan Control Device with High Frequency PWM Support and Hardware Monitoring Features
Table 8.41 Hysteresis Settings
SETTING
0h
5h
Fh
.
.
.
.
.
ABS LIMIT (DEC)
DATASHEET
(MSb)
(MSb)
Bit 7
H1-3
H3-3
Bit 7
RES
127
50
74
.
.
.
Bit 6
H1-2
H3-2
Bit 6
RES
HYSTERESIS
15 ° C
Bit 5
H1-1
H3-1
0 ° C
5 ° C
Bit 5
RES
.
.
.
.
.
.
ABS LIMIT (HEX)
Bit 4
H1-0
H3-0
Bit 4
RES
7Fh
32h
.
.
.
Bit 3
RES
Bit 3
RES
H2-
3
Bit 2
H2-2
RES
Bit 2
RES
Bit 1
H2-1
RES
Bit 1
RES
SMSC EMC6D103
(LSb)
(LSb)
Bit 0
H2-0
RES
Bit 0
XEN
Datasheet
Default
Default
Value
Value
44h
40h
00h