W83627UHG Nuvoton Technology Corporation of America, W83627UHG Datasheet - Page 65

• Manufacturer Part Number: W83627UHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627UHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V, 5V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.7.4
The W83627UHG provides an alarm output function at the BEEP/GP21 pin. The BEEP/GP21 pin is a
multi-function pin and can be configured as BEEP output, if Logical Device B, CR[F2h], bit 1 is set to
zero.
The BEEP outputs a warning tone when one of the monitored parameters in the following events is out
of the preset range.
The BEEP alarm function is enabled or disabled by the control bit at Hardware Monitor Device, Bank 0,
Index 57h, bit 7. Also, each event has their individual enable bit at Hardware Monitor Device, Bank 0,
Index 56h bit[7:0], Index 57h bit[6:0] and Bank 4, Index 53h, bit[1:0].
BEEP/GP21 is an open-drain output pin and its default state is low. When the BEEP alarm function is
activated, this pin repeatedly outputs 600 Hz square wave for 0.5 second and 1.2 KHz square wave
for 0.5 second in turn until the enable bit or the abnormal event is cleared.
CASEOPEN#
CASEOPEN#
CASEOPEN
CASEOPEN
CASEOPEN
CASEOPEN
Any voltage input of the eight pins (CPUVCORE, VIN[0..2], 5VCC, AVCC , 5VSB and VBAT) is
out of the allowed range;
Any temperature input of the three pins (SYSTIN and CPUTIN) exceeds the limit;
Any fan input of the two pins (SYSFANIN and CPUFANIN) exceeds the limit;
CASEOPEN# input pin is sampled low;
User-defined bit (Bank 4, Index 53h, bit 5) is written to 1.
STATUS
STATUS
CLEAR
CLEAR
BEEP Alarm Function
Figure 7-22 Caseopen Mechanism
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W83627UHG