EMC6D103S-CZC-TR SMSC, EMC6D103S-CZC-TR Datasheet - Page 79

• Manufacturer Part Number: EMC6D103S-CZC-TR
• Description: Industrial Temperature Sensors Auto Fan Contrllr Up to 4 Fans
• Manufacturer: SMSC

Specifications of EMC6D103S-CZC-TR

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

Fan Control Device with High Frequency PWM Support and Hardware Monitoring Features
Datasheet
SMSC EMC6D103
8.2.31
Register
Address
81h
Read/
Write
R/W
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.
See
Register 81h: TACH_PWM Association 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 associate a PWM with a tachometer input. This association is used by the fan
logic to determine when to prevent a bit from being set in the interrupt status registers.
The fan tachometer will not cause a bit to be set in the interrupt status register:
y. if the current value in Current PWM Duty registers is 00h or
z. if the fan is disabled via the Fan Configuration Register.
Note: A bit will never be set in the interrupt status for a fan if its tachometer minimum is set to FFFFh.
See bit definition below.
Bits[1:0] Tach1. These bits determine the PWM associated with this Tach. See bit combinations below.
Bits[3:2] Tach2. These bits determine the PWM associated with this Tach. See bit combinations below.
Bits[5:4] Tach3. These bits determine the PWM associated with this Tach. See bit combinations below.
Bits[7:6] Tach4. These bits determine the PWM associated with this Tach. See bit combinations below.
Figure 6.1 Interrupt Controlon page
TACH_PWM Association
Table 8.51 Register 81h: TACH_PWM Association Register
Register Name
DATASHEET
(MSb)
Bit 7
T4H
26.
79
Bit 6
T4L
Bit 5
T3H
Bit 4
T3L
Bit 3
T2H
Bit 2
T2L
Bit 1
T1H
Revision 0.3 (03-01-07)
(LSb)
Bit 0
T1L
Default
Value
A4h