EMC1424 SMSC Corporation, EMC1424 Datasheet - Page 37

• Manufacturer Part Number: EMC1424
• Description: (EMC1423 / EMC1424) Temperature Sensor
• Manufacturer: SMSC Corporation

1°C Temperature Sensor with Hardware Thermal Shutdown
Datasheet
SMSC EMC1423/EMC1424
6.12
6.13
ADDR.
ADDR.
1Fh
22h
Channel Mask Register
Consecutive ALERT Register
R/W
R/W
R/W
R/W
The Channel Mask Register controls individual channel masking. When a channel is masked, the
ALERT pin will not be asserted when the masked channel reads a diode fault or out of limit error. The
channel mask does not mask the SYS_SHDN pin.
Bit 3 - E3MASK - Masks the ALERT pin from asserting when the External Diode 3 channel is out of
limit or reports a diode fault.
Bit 2 - E2MASK - Masks the ALERT pin from asserting when the External Diode 2 channel is out of
limit or reports a diode fault.
Bit 1 - E1MASK - Masks the ALERT pin from asserting when the External Diode 1 channel is out of
limit or reports a diode fault.
Bit 0 - INTMASK - Masks the ALERT pin from asserting when the Internal Diode temperature is out
of limit.
The Consecutive ALERT Register determines how many times an out-of-limit error or diode fault must
be detected in consecutive measurements before the ALERT or SYS_SHDN pin is asserted.
Additionally, the Consecutive ALERT Register controls the SMBus Timeout functionality.
‘0’ (default) - The External Diode 3 channel will cause the ALERT pin to be asserted if it is out of
limit or reports a diode fault.
‘1’ - The External Diode 3 channel will not cause the ALERT pin to be asserted if it is out of limit
or reports a diode fault.
‘0’ (default) - The External Diode 2 channel will cause the ALERT pin to be asserted if it is out of
limit or reports a diode fault.
‘1’ - The External Diode 2 channel will not cause the ALERT pin to be asserted if it is out of limit
or reports a diode fault.
‘0’ (default) - The External Diode 1 channel will cause the ALERT pin to be asserted if it is out of
limit or reports a diode fault.
‘1’ - The External Diode 1 channel will not cause the ALERT pin to be asserted if it is out of limit
or reports a diode fault.
‘0’ (default) - The Internal Diode channel will cause the ALERT pin to be asserted if it is out of limit.
‘1’ - The Internal Diode channel will not cause the ALERT pin to be asserted if it is out of limit.
REGISTER
Channel
Consecutive
Mask
REGISTER
ALERT
B7
-
Table 6.14 Consecutive ALERT Register
TIME
OUT
Table 6.13 Channel Mask Register
B7
B6
-
B6
DATASHEET
CTHRM[2:0]
B5
-
B5
37
B4
-
B4
MASK
B3
E3
B3
CALRT[2:0]
MASK
B2
E2
B2
MASK
B1
B1
E1
Revision 1.16 (03-15-07)
MASK
B0
INT
-
B0
DEFAULT
DEFAULT
70h
00h