AMC6821 Datasheet, PDF (25/47 Pages) Burr-Brown (TI) – Analog Monitor and Control Circuit

AMC6821
www.ti.com
Read Local
Temperature
Temperature ³
Local-High-Temp-Limit
No
Yes
LTH = 1,
LTO = 1
Temperature ³
Local-Critical-Temp
Yes
LTC = 1,
OVR is Low
Read Remote
Temperature
SBAS386A – MAY 2006 – REVISED MAY 2006
(Update DCY with the rate defined by the
bits [RATE2:RATE0] of the DCY ramp register.
Temperature ³
Remote-High-Temp-Limit
Yes
RTH = 1,
RTO = 1
No
No
Temperature ³
No
Remote-Critical-Temp
Yes
RTC = 1,
OVR is Low
LTL = 1, ^Yes
LTO = 1
Temperature £
Local-Low-Temp-Limit
No
Temperature £
Remote-Low-Temp-Limit
No
Yes
RTL = 1,
RTO = 1
No
Update DCY?
The temperature updating rate may be faster than the DCY updating rate. _Yes
Remote Fan Temperature Control Mode
(Remote Fan Temperature Control)
Yes
Calculate New DCY for the Remote
Fan Temperature Control
No
(Maximum fast speed calculated control)
Calculate DCY for the remote fan temperature control
and local fan temperature control, respectively.
Use the larger one as the new DCY.
Update DCY
Figure 20. Temperature Monitoring Flow Chart
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