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MAX6639AEE Datasheet(PDF) 11 Page - Maxim Integrated Products |
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MAX6639AEE Datasheet(HTML) 11 Page - Maxim Integrated Products |
11 / 22 page 2-Channel Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller ______________________________________________________________________________________ 11 READ/ WRITE REGISTER NO. ADDRESS POR STATE FUNCTION D7 D6 D5 D4 D3 D2 D1 D0 R 00h 0000 0000 Temperature channel 1 MSB (+128°C) —— ———— LSB (1°C) R 01h 0000 0000 Temperature channel 2 MSB (+128°C) —— ———— LSB (1°C) R 02h 0000 0000 Status byte Channel 1 ALERT Channel 2 ALERT Channel 1 OT Channel 2 OT Channel 1 THERM Channel 2 THERM Fan 1 fault Fan 2 fault R/W 03h 0000 0011 Output mask Channel 1 ALERT Channel 2 ALERT Channel 1 OT Channel 2 OT Channel 1 THERM Channel 2 THERM Fan 1 fault Fan 2 fault R/W 04h 0011 0000 Global configuration Run 0 = run, 1= stby POR: 1 = reset SMBus timeout: 0 = enabled, 1 = disabled Temp channel 2 source: 1 = local, 0 = remote 2 PWM output frequency range Reserved Reserved Reserved R 05h 0000 0000 Channel 1 extended temperature MSB (0.5°C) — LSB (0.125°C) Reserved Reserved Reserved Reserved Diode fault R 06h 0000 0000 Channel 2 extended temperature MSB (0.5°C) — LSB (0.125°C) Reserved Reserved Reserved Reserved Diode fault R/W 08h 0101 0101 Channel 1 ALERT limit MSB —— ———— LSB (1°C) R/W 09h 0101 0101 Channel 2 ALERT limit MSB —— ———— LSB (1°C) R/W 0Ah 0110 1110 Channel 1 OT limit MSB —— ———— LSB (1°C) R/W 0Bh 0110 1110 Channel 2 OT limit MSB —— ———— LSB (1°C) R/W 0Ch 0101 0101 Channel 1 THERM limit MSB —— ———— LSB (1°C) R/W 0Dh 0101 0101 Channel 2 THERM limit MSB —— ———— LSB (1°C) R/W 10h 1000 0010 Fan 1 configuration 1 PWM mode Rate of change (MSB) Rate of change Rate of change (LSB) Fan 1 channel 1 control Fan 1 channel 2 control RPM range select RPM range select R/W 11h 0000 0000 Fan 1 Configuration 2a RPM step- size A (MSB) RPM step- size A RPM step- size A RPM step- size A (LSB) Temp step-size A (MSB) Temp step-size A (LSB) PWM Polarity Minimum fan speed: 0 = 0%, 1= value Table 4. Register Map |
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