SCH3112I-NE SMSC [SMSC Corporation], SCH3112I-NE Datasheet - Page 232

• Manufacturer Part Number: SCH3112I-NE
• Description: LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
• Manufacturer: SMSC [SMSC Corporation]

Rev 0.2 (09-28-04)
e 3 Top Limit Exceeded
e 2 Top Limit Exceeded
e 1 Top Limit Exceeded
23.14
23.14.1
The nTHERMTRIP output
(remote diodes 1-2, internal) is above its associated temperature limit.
The Thermtrip Enable register at offset CEh selects which reading(s) will cause the nTHERMTRIP
signal to be active, when the selected temperature(s) exceed in the associated limit registers (C4h for
Remote Diode 1, C5h for Remote diode 2, and C9h for Ambient temp) their pre-programmed limit.
An internal version of this output will also be used by the RESGEN block to generate a system reset
pulse. More details can be found in
nTHERMTRIP Operation
The nTHERMTRIP pin can be configured to assert when one of the temperature zones is above its
associated nTHERMTRIP temperature limit (THERMTRIP Temp Limit Zone[3:1]). The Thermtrip
temperature limit is a separate limit register from the high limit used for setting the interrupt status bits
for each zone.
The THERMTRIP Limit Zone[3:1] registers represent the upper temperature limit for asserting
nTHERMTRIP for each zone. These registers are defined as follows: If the monitored temperature for
the zone exceeds the value set in the associated THERMTRIP Temp Limit Zone[3:1], the
corresponding bit in the THERMTRIP status register will be set. The nTHERMTRIP pin may or may
not be set depending on the state of the associated enable bits (in the THERM Output Enable register).
Each zone may be individually enabled to assert the nTHERMTRIP pin (as an output).
nTHERMTRIP
(TTE Status [2])
(TTE Status [1])
(TTE Status [0])
Zone 3
Zone 2
Zone 1
Status Reg
Top Temp
Exceeded
Figure 23.9 AMTA Interrupt Mapping
pin can be configured to assert when any of the temperature sensors
(Tmin Adjust Enable [1])
(Tmin Adjust Enable [2])
(Tmin Adjust Enable [3])
DATASHEET
TMIN_ADJ_EN1
TMIN_ADJ_EN2
TMIN_ADJ_EN3
Chapter 18, "Reset Generation," on page
LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
O
R
216
(Tmin Adjust Enable Reg [0])
TOP_INT_EN
Top_Temp_Event
Temp Limit Adjust
To Zone 1-3 Low
163.
Logic
SMSC SCH311X
(AND'd w
To INT
Datasheet
INTEN