EMC6D100 datasheet(4/75 Pages) SMSC

4 / 75 page

Environmental Monitoring and Control Device

Datasheet

SMSC EMC6D100/EMC6D101

Page 4

Rev. 09-09-04

DATASHEET

Table of Contents

EMC6D100/101 REVISIONS........................................................................................................................ 3

CHAPTER 1

GENERAL DESCRIPTION................................................................................................. 9

CHAPTER 2

PIN CONFIGURATIONS .................................................................................................. 10

2.1

EMC6D101..................................................................................................................................... 10

2.2

EMC6D100..................................................................................................................................... 11

CHAPTER 3

RECOMMENDED IMPLEMENTATION............................................................................ 12

CHAPTER 4

PIN DESCRIPTION........................................................................................................... 14

4.1

3.3V OPERATION, 5V TOLERANCE .................................................................................................... 15

CHAPTER 5

SMBUS INTERFACE........................................................................................................ 16

5.1

SLAVE ADDRESS .............................................................................................................................. 16

5.2

SMBUS SLAVE INTERFACE ............................................................................................................... 16

5.3

BUS PROTOCOLS ............................................................................................................................. 17

5.3.1

Byte Protocols.......................................................................................................................... 17

5.4

INVALID PROTOCOL RESPONSE BEHAVIOR......................................................................................... 18

5.4.1

Undefined Registers ................................................................................................................ 19

5.5

GENERAL CALL ADDRESS RESPONSE................................................................................................ 19

5.6

SLAVE DEVICE TIME-OUT ................................................................................................................. 19

5.7

STRETCHING THE SCLK SIGNAL ....................................................................................................... 19

5.8

SMBUS TIMING ................................................................................................................................19

5.9

BUS RESET SEQUENCE .................................................................................................................... 19

5.10

SMBUS ALERT RESPONSE ADDRESS............................................................................................. 19

CHAPTER 6

HARDWARE MONITORING ............................................................................................ 21

6.1

INPUT MONITORING .......................................................................................................................... 21

6.2

RESETTING THE HARDWARE MONITORING BLOCK .............................................................................. 21

6.2.1

Power On Reset ...................................................................................................................... 21

6.2.2

Soft Reset (Initialization).......................................................................................................... 21

6.3

MONITORING MODES ........................................................................................................................ 21

6.3.1

Continuous Monitoring Mode................................................................................................... 22

6.3.2

Cycle Monitoring Mode............................................................................................................ 22

6.4

INTERRUPT STATUS REGISTERS........................................................................................................ 23

6.4.1

Diode Fault .............................................................................................................................. 24

6.5

INTERRUPT PIN ................................................................................................................................24

6.6

LOW POWER MODES ........................................................................................................................ 25

6.6.1

Sleep Mode.............................................................................................................................. 25

6.6.2

Shutdown Mode....................................................................................................................... 26

6.7

ANALOG VOLTAGE MEASUREMENT.................................................................................................... 26

6.8

VOLTAGE ID..................................................................................................................................... 26

6.9

TEMPERATURE MEASUREMENT ......................................................................................................... 26

6.9.1

Internal Temperature Measurement........................................................................................ 26

6.9.2

External Temperature Measurement....................................................................................... 27

6.9.3

Temperature Data Format ....................................................................................................... 27

6.9.4

Offset Register......................................................................................................................... 28

6.9.5

Second Offset Register ........................................................................................................... 28

6.10

TEMPERATURE SMOOTHING........................................................................................................... 28

CHAPTER 7

FAN CONTROL ................................................................................................................ 29

7.1

GENERAL DESCRIPTION.................................................................................................................... 29

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