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PC87366 数据表(PDF) 197 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 PC87366
功能描述  128-Pin LPC SuperI/O with System Hardware Monitoring, MIDI and Game Ports
PDF  240 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

PC87366 数据表(HTML) 197 Page - National Semiconductor (TI)

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12.0 Temperature Sensor (TMS) (Continued)
197
www.national.com
Figure 43. OTS and ALERT Temperature Response Diagrams
12.2.3
ALERT Response Read Sequence
The Read Channel Temperature register (RDCHT) holds the temperature value most recently read from the channel. The
Temperature Event Status register (TEVSTS) indicates any ALERT detected as long as VSB is maintained. ALERTs are
cleared by software.
When an IRQ or SMI is received, check the TEVSTS register to see which of the sensors detected an out-of-limit readout,
access the channel readouts, read the current value and status information, and clear any pending status bits.
12.2.4
Power-On Reset Default States
TMS always powers up in a known state. TMS power-up default conditions are:
1. Local temperature set to 0
°C.
2. Remote temperature set to 0
°C until the TMS senses a diode present on D+ and D- input pins.
3. Status register set to 00h.
4. Command register set to 00h; ALERT and OTS enabled, Standby mode deactivated.
OTS
Indicates when temperature is sampled by the A/D Converter.
TOS1
TOS2
THIGH
TLOW
ALERT
Indicates when temperature is sampled by the A/D Converter.
a: ALERT Signal
b: OTS Signal
TOS2
TLOW2
OTS
Indicates when temperature is sampled by the A/D Converter.
THIGH2
TLOW1
THIGH1
TOS1
ALERT
c: Combined ALERT and OTS Signals



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