Boser HS-6237, Руководство пользователя

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3.20 External Speaker
Aside from the buzzer at location BZ1 onboard, t he HS-6237/HS-6637
also offers a connector ( CN4 ) for an external speaker connection. The
table below lists the pin assignments of CN4 .
CN4: Speaker Connector
PIN Description
1 Speaker Signal
2 N/C
3 GND
4 +5V
1 2 3 4
Speak
er Signal
N/C
GN
D
+5V
3.21 Thermal Input Connector
In relevance to the Hardware Monitoring feature provided by the
onboard Winbond W83783S, the board allows the installation of a
thermal sensor via connector
JP14 . The thermal connector monitors
and displays the current system temperature from the Chipset
Features Setup screen on your BIOS utility program. The value
displayed are read-only figures and may not be altered.
JP14: Thermal Input Connector
PIN Description
1 Sensor In
2 GND
1 2
Se
ns
or
In GND
3.22 Watchdog Timer
There are three access cycles of Watchdog Timer as
Enable, Refresh and
Disable are the three access cycles of Watchdog Timer. The Enable
cycle proceeds via READ PORT 443H whereas the Disable cycle
proceeds via READ PORT 045H. A continued Enable cycle after a first
Enable cycle means Refresh.
Once the Enable cycle is active, a Refresh cycle is requested before
the time-out period. This restarts counting of the WDT period. When
the time counting goes over the period preset of WDT, it will assume
that the program operation is abnormal. A System Reset signal to
re-start or a NMI cycle to the CPU transpires when such error happens.
Jumper
JP7 is used to select the function of Watchdog Timer.