w83795g Winbond Electronics Corp America, w83795g Datasheet - Page 5
w83795g
Manufacturer Part Number
w83795g
Description
Nuvoton H/w Monitor
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83795G.pdf
(154 pages)
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2. GENERAL DESCRIPTION (W83795ADG)
W83795ADG provides several innovative features, such as ASF 2.0 compliant specification, SMBus
2.0 ARP compatible command, Intel PECI2.0 interface, and PROCESSOR HOT. Conventionally,
W83795ADG can be used to monitor several critical hardware parameters of the system, including
power supply voltages, fan speeds, and temperatures, which are very important for a high-end
computer system, such as server, workstation…etc, to work stably and efficiently.
simultaneously monitor 12 (up to 18) analog voltage inputs (including power VDD / 3VSB / VBAT / VTT
monitoring), 8 (up to 14) fan tachometer inputs, 2 fan output control, 6 remote temperature sensor
inputs, 4 of which support current mode (dual current source) temperature measurement method,
caseopen detection, Watch Dog Timer function, and GPIO pins. The sense of remote temperature can
be performed by thermistors, or directly from Intel® CPU with thermal diode output. W83795ADG
provides 2 PWM (pulse width modulation) / DC fan output modes for S
Cruise
CPU and the system can be maintained within specific programmable ranges under the hardware
control. As for S
fan’s duty cycle, depends on this construction, fan could be operated at the lowest possible speed so
that the acoustic noise could be balanced. As for warning mechanism, W83795ADG provides SMI#,
OVT#, and BEEP signals to protect the system. W83795ADG has 2 specific pins to provide address
selection so that 4 W83795ADG could be wired through I
implementation of network management in OS-absent status. Through W83795ADG’s compliance with
ASF2.0 sensor specification, network server is able to monitor the environmental status of each client
in OS-absent state by PET (Platform Event Trap) frame values returned from W83795ADG, such as
temperatures, voltages, fan speed and case open. Moreover, W83795ADG supports SMBus 2.0 ARP
command to solve the problem of address conflicts by dynamically assigning a new unique address for
W83795ADG ASF Function after W83795ADG’s UDID is sent.
system from time to time. A pop-up warning can also be activated when the monitored item is out of the
proper/preset range. The application software could be Nuvoton's Hardware Doctor
management application software. Besides, the users can set up the upper and lower limits (alarm
thresholds) of these monitored parameters and activate corresponding maskable interrupts.
W83795ADG is an evolving version of the Nuvoton popular Hardware Monitor IC family.
A 10-bit analog-to-digital converter (ADC) is built inside W83795ADG. W83795ADG can
W83795ADG can uniquely serve as an ASF sensor to respond to ASF master’s request for the
Through the application software or BIOS, the users can read all the monitored parameters of the
TM
mode and
MART
F
AN
S
MART
TM
IV, which provides 8 sets of temperatures setting point each could control
F
AN
TM
IV
mode. Under
- 5 –
2
C interface at the same time.
Thermal Cruise
MART
W83795G/ADG
TM
F
AN
mode, temperatures of
TM
control -
Revision 1.41
TM
Aug/2/2010
or other
Thermal
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