EMC6D102-CZC SMSC, EMC6D102-CZC Datasheet - Page 70
EMC6D102-CZC
Manufacturer Part Number
EMC6D102-CZC
Description
Industrial Temperature Sensors Auto Fan Contrllr Up to 4 Fans
Manufacturer
SMSC
Datasheet
1.EMC6D102-CZC-TR.pdf
(86 pages)
Specifications of EMC6D102-CZC
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Revision 0.4 (09-25-07)
7.2.30
Register
Address
80h
Read/
Write
R/W
Bit[3] TRDY: Temperature Reading Ready. This bit indicates that the temperature reading registers
have valid values. This bit is used after writing the start bit to ‘1’. 0= not valid, 1=valid.
Bit[4] SUREN: Spin-up reduction enable. This bit enables the reduction of the spin-up time based on
feedback from all fan tachometers associated with each PWM. 0=disable, 1=enable (default)
Bit[5] SMSC Reserved
This is an SMSC Reserved bit. Writing this bit to a value different than the default value may cause
unwanted results.
Bit[6] SMSC Reserved
This is an SMSC Reserved bit. Writing this bit to a value different than the default value may cause
unwanted results.
Bit[7] Initialization
Setting the INIT bit to ‘1’ performs a soft reset. This bit is self-clearing. Soft Reset sets all the registers
except the Reading Registers to their default values.
Register 80h: Interrupt Enable 2 Register
These registers become read only when the Lock bit is set. Any further attempts to write to these
registers shall have no effect.
This register is used to enable individual fan tach error events to set the corresponding status bits in
the interrupt status registers. This register also contains the group fan tach enable bit (Bit[0] TACH),
which is used to enable fan tach events to force the interrupt pin (INT#) low if interrupts are enabled
(see Bit[2] INTEN of the Special Function register at offset 7Ch).
This register contains the following bits:
Bit[0] TACH (Group TACH Enable)
0=Out-of-limit tachometer readings do not affect the state of the INT# pin (default)
1=Enable out-of-limit tachometer readings to make the INT# pin active low
Bit[1] Fan Tach 1 Event Enable
Bit[2] Fan Tach 2 Event Enable
Bit[3] Fan Tach 3 Event Enable
Bit[4] Fan Tach 4 Event Enable
Bit[5] Reserved
Bit[6] Reserved
Bit[7] Reserved
The individual fan tach error event bits are defined as follows:
0=disable
1=enable.
Interrupt Enable 2 (Fan
Register Name
Tachs)
Fan Control Device with Hardware Monitoring and Acoustic Noise Reduction Features
(MSb)
Bit 7
RES
DATASHEET
Bit 6
RES
70
Bit 5
RES
TACH4
Bit 4
TACH3
Bit 3
TACH2
Bit 2
TACH1
Bit 1
SMSC EMC6D102
TACH
(LSb)
Bit 0
Datasheet
Default
Value
1Eh
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