Product specifications

VT1211 LPC SuperIO and Hardware Monitor
Revision 1.0 January 8, 2002 -1- Product Features
Technologies, Inc.
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VT1211
LPC SuperIO and Hardware Monitor
PRODUCT FEATURES
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• LPC (Low Pin Count) Interface
– Complies with Intel Low Pin Count Interface Specification Revision 1.0
– Supports LDRQ#, SERIRQ protocols
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• Hardware Monitor Controller
– Built-in 8-bit Analog to Digital Converter
– One thermal input for Pentium II type thermal diode
– 1 intrinsic Vcc voltage monitor input
– 5 external Universal Channels for monitor inputs
– Monitors 2 fan tachometer inputs
– 1 chassis open detection input
– WatchDog comparison of all monitored values
– Provides VID0 - VID4 support for P6 class CPU
– Over temperature indicator output
– Over limit of fan and voltage indicator output
– Provides beep tone warning
– Serial Bus slave mode supported
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• Fan Speed Controller
– Provides fan on-off and speed control
– Supports 2 programmable Pulse Width Modulation (PWM) outputs
– Duty cycle resolution of 1/256
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• Flash-ROM Interface
– Supports up to 4MB flash ROM
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• SmartGuardian Controller
– Provides automatic temperature to fan speed control
– Supports mix-and-match for temperature inputs and fan speed control outputs
– Overrides fan speed controller during catastrophic situations
– Provides over-temperature beep tone warning
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• Two 16C550 UARTs
– Supports two standard Serial Ports
– Each port supports Serial Port
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• IEEE1284 Parallel Port
– Standard mode -- Bi-directional SPP
– Enhanced mode -- EPP V1.7 and 1.9 compliant
– High speed mode -- ECP, IEEE1284 compliant
– Backdrive current reduction
– Printer power-on damage reduction