ADM1040

PRELIMINARY TECHNICAL DATA = Preliminary Technical Data FEATURES Monitors Multiple Voltage Rails (240VA Limited) Monitors Bulk DC, Op-Amp Supply, 5V Supply Monitors Voltage Rails 1,2 and 3 Currents Up to 3 Fan Speed Measurement Channels Up to 6 General-Purpose Logic Inputs External Temperature Measurement with Remote Diode (Two Channels) On-Chip Temperature Sensor Limit Comparison of all Monitored Values Power Supply Monitor ASIC ADM1040 Analog Fan Speed Control Output SMBusTM Compatible Serial Interface SMBus ALERT Capability 512 Bytes On-Chip, Write-Protected E2PROM Shutdown Output for Overtemperature and 240VA Faults APPLICATIONS Network Servers and Personal Computers Microprocessor-Based Office Equipment Test Equipment and Measuring Instruments FUNCTIONAL BLOCK DIAGRAM SDA SCL A1 A0/NTEST_OUT 2 3 22 23 FROM NAND TREE OUTPUT GPI0 4 SERIAL BUS INTERFACE GPIO REGISTERS FAN1/GPI1 5 VDD FAN SPEED COUNTER VALUE AND LIMIT REGISTERS ADDRESS POINTER REGISTER 8K BYTES E 2PROM TEMPERATURE CONFIGURATION REGISTER VDD/5VSB 7 LIMIT COMPARATORS INTERRU PT STATUS REGISTERS INT MASK REGISTERS 1 ALERT GPI2/I2_+ 9 GPI3/I2_-/AIN2 10 GPI4/I3_+ 11 GPI5/I3_- 12 D1-/GPI2 13 D1+/GPI3 14 D2-/GPI4/FAN2 15 D2+/GPI5/FAN3 16 I1_+ 17 I1_-/AIN1 18 AIN3 19 AIN4 20 AIN5 21 BANDGAP TEMP. SENSOR INPUT SIGNAL CONDITIONING AND ANALOG MULTIPLEXER ADM1040 INTERRUPT MASKING 24 8-BIT ADC CONFIGURATION REGISTERS BANDGAP REFERENCE ANALOG OUTPUT REGISTER AND 8-BIT DAC TO NAND TREE ENABLE SHDN 8 DAC/NT...