AMC6821 Datasheet, PDF (28/47 Pages) Burr-Brown (TI) – Analog Monitor and Control Circuit

AMC6821
SBAS386A – MAY 2006 – REVISED MAY 2006
www.ti.com
Individual interrupts can be masked by clearing the corresponding interrupt enable bit in the configuration
registers to prevent SMBALERT interrupts. Note that masking an interrupt source only prevents the SMBALERT
pin output from being asserted; the appropriate status bit gets set as normal.
LTL Bit (Local Temperature £ Local-Low-Temp-Limit)
(local temperature out-of-range)
LTH Bit (Local Temperature ³ Local-High-Temp-Limit)
LTOIE Bit
(local temperature interrupt enabled)
RTL Bit (Remote Temperature £ Remote-Low-Temp-Limit)
(remote temperature out-of-range)
RTH Bit (Remote Temperature ³ Remote-High-Temp-Limit)
RTOIE Bit
(remote temperature interrupt enabled)
(Local Temperature Out-of-Range Interrupt)
(Remote Temperature Out-of-Range Interrupt)
AMC6821
RPM-ALARM Bit (TACH < TACH-High-Limit)
FANS Bit (TACH > TACH-Low-Limit)
(RPM out-of-range)
FANIE Bit
(FAN-TACH interrupt enabled)
LPSV Bit (PSV interrupt)
PSVIE Bit
L-THERM Bit (over local THERM interrupt)
THERMOVIE Bit
R-THERM Bit (over remote THERM interrupt)
THERMOVIE Bit
RTF = 1 (remote sensor failure)
RTFIE Bit
(FAN-ORN interrupt)
+V
SMBALERT
INT-EN
RTC Bit (remote temperature reaches critical temperature)
LTC Bit (local temperature reaches critical temperature)
Figure 24. SMBALERT
28
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