EMC1704 Datasheet, PDF (45/68 Pages) Microchip Technology – High-Side Current-Sense and Multiple 1°C Temperature Monitor

High-Side Current-Sense and Multiple 1°C Temperature Monitor
Bit 2 - E2MASK - Masks the ALERT pin from asserting when the External Diode 2 channel 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.
Bit 1 - E1MASK - Masks the ALERT pin from asserting when the External Diode 1 channel 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.
Bit 0 - INTMASK - Masks the ALERT pin from asserting when the Internal Diode temperature is out-
of-limit.
 ‘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.
5.12 Consecutive Alert Register
Table 5.13 Consecutive Alert Register
ADDR R/W REGISTER B7 B6 B5 B4 B3 B2 B1
22h
R/W Consecutive TIME
Alert
OUT
CTHRM[2:0]
CALRT[2:0]
B0 DEFAULT
-
70h
The Consecutive Alert Register determines how many times an out-of-limit error or diode fault must
be detected in consecutive measurements before the interrupt status registers are asserted. This
applies to temperature limits only. The voltage measurement and current sense measurements are
controlled via the Voltage Channel Configuration register and Current Sense Configuration register
respectively (see Section 5.19 and Section 5.20).
When the ALERT pin is configured as a comparator, the consecutive alert counter will ignore diode
fault and low limit errors and only increment if the measured temperature meets or exceeds the High
Limit.
Each measurement channel has a separate fault queue associated with the high limit, low limit, and
diode fault condition except the internal diode.
Bit 7 - TIMEOUT - Determines whether the SMBus Timeout function is enabled.
 ‘0’ (default) - The SMBus Timeout feature is disabled. The SMCLK line can be held low indefinitely
without the device resetting its SMBus protocol.
 ‘1’ - The SMBus Timeout feature is enabled. If the SMCLK line is held low for more than 30ms,
the device will reset the SMBus protocol.
Bits 6-4 - CTHRM[2:0] - Determines the number of consecutive measurements that must exceed the
corresponding Tcrit Limit before the THERM pin is asserted.
Bits 3-1 - CALRT[2:0] - Determines the number of consecutive measurements that must have an out-
of-limit condition or diode fault before the ALERT pin is asserted. All temperature channels use this
value to set the respective counters. The bits are decoded as shown in Table 5.14. The default setting
is 1 consecutive out-of-limit conversion.
DS20005239A
45
DATASHEET
EMC1704