EMC2300-AZC-TR SMSC, EMC2300-AZC-TR Datasheet - Page 56

• Manufacturer Part Number: EMC2300-AZC-TR
• Description: Industrial Temperature Sensors Auto Fan Contrllr Up to 4 Fans
• Manufacturer: SMSC

Specifications of EMC2300-AZC-TR

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

Revision 0.32 (06-23-08)
8.2.9
BIT
Register
Address
0
1
2
3
4
5
6
7
42h
Diode 1 Limit
Diode 2 Limit
Sensor Limit
INT2 Event
Vccp_Error
VCC_Error
Reserved
Reserved
Remote
Remote
Internal
NAME
Active
Error
Error
Error
Read/
Write
8.10)
(See
Note
R-C
Register 42h: Interrupt Status Register 2
Note 8.10 This register is cleared on a read if no events are active.
This register is read only – a write to this register has no effect.
The Interrupt Status Register 2 bits are automatically set by the device whenever a remote temperature
sensor error occurs, or a tach reading value is above the minimum value set in the tachometer
minimum registers. The Interrupt Status Register 2 register holds a set bit until the event is read by
software or until the individual interrupt enable bit is cleared (see Note below).
The contents of this register are cleared (set to 0) automatically by the
software, if the temperature sensor error no loner exists, or if the tach reading register is no longer
above the minimum. Once set, the Interrupt Status Register 2 bits remain set until a read event occurs
or until the individual interrupt enable bit is cleared, even if the voltage, Tach, or diode event no longer
exists.
The remote diode fault bits do not clear on a read while the fault condition exists. If the start bit is set
when a fault condition occurs, 80h will be loaded into the associated temperature reading register,
which will cause the associated diode limit error bit to be set (Remote Diode 1 Limit Error or Remote
Diode 2 Limit Error) in addition to the diode fault bit. Disabling the enable bit for the diode will clear
both the fault bit and the error bit for that diode (see Note below).
This register is read only – a write to this register has no effect.
Interrupt Status Register 2
R/W
Register Name
R
R
R
R
R
R
R
R
DEFAULT
Table 8.15 Register 42h: Interrupt Status Register 2
0
0
0
0
0
0
0
0
Table 8.14 Interrupt Status Register 1
Reserved
The
is less than or equal to the limit set in the Vccp Low Limit register or
greater than the limit set in the Vccp High Limit register.
The
is less than or equal to the limit set in the VCC Low Limit register or
greater than the limit set in the VCC High Limit register.
Reserved
The
measured by the Remote1- and Remote1+ is less than or equal to the
limit set in the Remote Diode 1 Low Temp register or greater than the limit
set in Remote Diode 1 High Temp register.
The
measured by the internal temperature sensor is less than or equal to the
limit set in the Internal Low Temp register or greater than the limit set in
the Internal High Temp register.
The
measured by the Remote2- and Remote2+ is less than or equal to the
limit set in the Remote Diode 2 Low Temp register or greater than the limit
set in the Remote Diode 1 High Temp register.
The device automatically sets this bit to 1 when a status bit is set in the
Interrupt Status Register 2.
(MSb)
ERR2
Bit 7
EMC2300
EMC2300
EMC2300
EMC2300
EMC2300
DATASHEET
ERR1
Bit 6
automatically sets this bit to 1 when the Vccp input voltage
automatically sets this bit to 1 when the VCC input voltage
automatically sets this bit to 1 when the temperature input
automatically sets this bit to 1 when the temperature input
automatically sets this bit to 1 when the temperature input
56
Fan Control Device with High Frequency PWM and Temperature Monitors
TACH4
Bit 5
TACH3
Bit 4
DESCRIPTION
TACH2
Bit 3
TACH1
Bit 2
EMC2300
Bit 1
RES
after it is read by
SMSC EMC2300
(LSb)
Bit 0
RES
Datasheet
Default
Value
00h