SMSC EMC6D100/EMC6D101
Page 1
Rev. 09-09-04
DATASHEET
EMC6D100/EMC6D101*
Environmental Monitoring
and Control Device with
Automatic Fan Capability
*NOTE: The EMC6D101 is not recommended for new designs. The EMC6D102 Fan Control Device with Hardware
Monitoring and Acoustic Noise Reduction Features is the replacement device recommended for new designs.
The EMC6D100 & EMC6D101 monitor external voltages, temperatures, and fan speeds. They use this monitoring
capability to alert the system to out of limit conditions and can automatically control the speeds of multiple fans in a
PC or embedded system. The EMC6D101, available in a 24-pin SSOP package, and the EMC6D100, available in a
28-pin SSOP package, are designed to be register compatible. The EMC6D100 offers all the features of the
EMC6D101 plus additional voltage monitoring and system control features. The following is a summary of the
features offered in both packages:
Product Features
3.3 Volt Operation (5 Volt Tolerant Input Buffers)
SMBus 2.0 compliant interface
Fan
Control
- PWM (Pulse width Modulation) Outputs (3)
- Fan Tachometer Inputs (4)
- Programmable automatic fan control based on
temperature
Temperature
Monitor
- Monitoring of Two Remote Thermal Diodes
- (+/- 3 deg. C accuracy)
- Internal Ambient Temperature Measurement
- Limit Comparison of all Monitored Values
- Interrupt Pin for out-of-limit Temperature Indication
(EMC6D100 only)
- Configurable offset for internal or external
temperature channels
Voltage
Monitor
- Monitor Power supplies (+2.5V, +5V, +12V, Vccp,
and VCC)
- EMC6D100 monitors additional power supplies
(+3.3V, +1.5V, +1.8V)
- Limit Comparison of all Monitored Values
- Interrupt Pin for out-of-limit Voltage Indication
(EMC6D100 only)
- 5 VID (Voltage Identification) inputs
XNOR Tree test mode
Mechanical
Packages
- 24 Pin SSOP Package (EMC6D101)
- 28 Pin SSOP Package (EMC6D100)
ORDERING INFORMATION
Order Number(s):
EMC61D100-DK for 28 Pin SSOP Package
EMC61D101-CK for 24 Pin SSOP Package
Environmental Monitoring and Control Device
Datasheet
SMSC EMC6D100/EMC6D101
Page 2
Rev. 09-09-04
DATASHEET
80 Arkay Drive
Hauppauge,
NY
11788
(631)
435-6000
FAX (631) 273-3123
Copyright SMSC 2004. All rights reserved.
Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete
information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no
responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without
notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does
not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC
or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's standard
Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors
known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request.
SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause
or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further
testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale
Agreement, may be obtained by visiting SMSC's website at http://www.smsc.com. SMSC is a registered trademark of Standard Microsystems
Corporation ("SMSC"). Product names and company names are the trademarks of their respective holders.
SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND AGAINST INFRINGEMENT AND THE LIKE, AND ANY AND
ALL WARRANTIES ARISING FROM ANY COURSE OF DEALING OR USAGE OF TRADE.
IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT, INCIDENTAL, INDIRECT, SPECIAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES;
OR FOR LOST DATA, PROFITS, SAVINGS OR REVENUES OF ANY KIND; REGARDLESS OF THE FORM OF ACTION, WHETHER BASED ON
CONTRACT; TORT; NEGLIGENCE OF SMSC OR OTHERS; STRICT LIABILITY; BREACH OF WARRANTY; OR OTHERWISE; WHETHER OR
NOT ANY REMEDY OF BUYER IS HELD TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Environmental Monitoring and Control Device
Datasheet
SMSC EMC6D100/EMC6D101
Page 3
Rev. 09-09-04
DATASHEET
EMC6D100/101 Revisions
PAGE(S) SECTION/FIGURE/ENTRY
CORRECTION
DATE REVISED
Cover
Note added advising of replacement of
EMC6D101 with EMC6D102 as
recommended device for new designs.
09/09/04
68
9.2 Ratings for Operation
Vcc Supply Current, max sleep mode
changed from 300 to 500
01/07/03
21 6.3
Monitoring
Modes
Updated temperature conversion values:
changed 2.133ms to 2ms
changed 1.511ms to 1.5ms
Updated total times:
Option 1 Changed 362.616ms to 624 ms
Option 2 - Changed 45.327ms to 78ms
(See italicized text)
04/04/02
22
6.3.1 Continuous Monitoring Mode
Updated values: changed 362.616ms to
624 ms (see italicized text)
04/04/02
68
9.2 Ratings for Operation
Updated typical values for the conversion
time:
Option 1 - changed from 363 to 624
Option 2 - changed from 45 to 78
Modified Note 3 to reflect these value
changes.
(See italicized text)
04/04/02
73
11.1 24 Pin SSOP Package
Outline, 0.150" Wide Body, 0.025"
Pitch
Updated package outline.
04/04/02
74
11.2 28 Pin SSOP Package
Outline, 0.150" Wide Body, 0.025"
Pitch
Updated package outline.
04/04/02
9
General Description
Reference to "Dual Footprint" removed.
11/19/01
10
EMC6D101
Reference to "Dual Footprint" removed.
11/19/01
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
O
PERATION
,
5V
T
OLERANCE
.................................................................................................... 15
CHAPTER 5
SMBUS INTERFACE........................................................................................................ 16
5.1
S
LAVE
A
DDRESS
.............................................................................................................................. 16
5.2
SMB
US
S
LAVE
I
NTERFACE
............................................................................................................... 16
5.3
B
US
P
ROTOCOLS
............................................................................................................................. 17
5.3.1
Byte Protocols.......................................................................................................................... 17
5.4
I
NVALID
P
ROTOCOL
R
ESPONSE
B
EHAVIOR
......................................................................................... 18
5.4.1
Undefined Registers ................................................................................................................ 19
5.5
G
ENERAL
C
ALL
A
DDRESS
R
ESPONSE
................................................................................................ 19
5.6
S
LAVE
D
EVICE
T
IME
-O
UT
................................................................................................................. 19
5.7
S
TRETCHING THE
SCLK
S
IGNAL
....................................................................................................... 19
5.8
SMB
US
T
IMING
................................................................................................................................ 19
5.9
B
US
R
ESET
S
EQUENCE
.................................................................................................................... 19
5.10
SMB
US
A
LERT
R
ESPONSE
A
DDRESS
............................................................................................. 19
CHAPTER 6
HARDWARE MONITORING ............................................................................................ 21
6.1
I
NPUT
M
ONITORING
.......................................................................................................................... 21
6.2
R
ESETTING THE
H
ARDWARE
M
ONITORING
B
LOCK
.............................................................................. 21
6.2.1
Power On Reset ...................................................................................................................... 21
6.2.2
Soft Reset (Initialization).......................................................................................................... 21
6.3
M
ONITORING
M
ODES
........................................................................................................................ 21
6.3.1
Continuous Monitoring Mode................................................................................................... 22
6.3.2
Cycle Monitoring Mode............................................................................................................ 22
6.4
I
NTERRUPT
S
TATUS
R
EGISTERS
........................................................................................................ 23
6.4.1
Diode Fault .............................................................................................................................. 24
6.5
I
NTERRUPT
P
IN
................................................................................................................................ 24
6.6
L
OW
P
OWER
M
ODES
........................................................................................................................ 25
6.6.1
Sleep Mode.............................................................................................................................. 25
6.6.2
Shutdown Mode....................................................................................................................... 26
6.7
A
NALOG
V
OLTAGE
M
EASUREMENT
.................................................................................................... 26
6.8
V
OLTAGE
ID..................................................................................................................................... 26
6.9
T
EMPERATURE
M
EASUREMENT
......................................................................................................... 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
T
EMPERATURE
S
MOOTHING
........................................................................................................... 28
CHAPTER 7
FAN CONTROL ................................................................................................................ 29
7.1
G
ENERAL
D
ESCRIPTION
.................................................................................................................... 29
Environmental Monitoring and Control Device
Datasheet
SMSC EMC6D100/EMC6D101
Page 5
Rev. 09-09-04
DATASHEET
7.2
L
IMIT AND
C
ONFIGURATION
R
EGISTERS
............................................................................................. 29
7.3
D
EVICE
S
ET
-U
P
...............................................................................................................................30
7.4
PWM
F
AN
S
PEED
C
ONTROL
............................................................................................................. 30
7.4.1
Manual Fan Control Operating Mode ...................................................................................... 30
7.4.2
Auto Fan Control Operating Mode .......................................................................................... 31
7.4.3
Spin Up .................................................................................................................................... 34
7.4.4
Hottest Option.......................................................................................................................... 35
7.5
F
AN
S
PEED
M
ONITORING
.................................................................................................................. 35
7.5.1
Fan Tachometer Inputs ........................................................................................................... 35
7.5.2
Detection of a Stalled Fan ....................................................................................................... 36
7.5.3
Fan Interrupt Status Bits.......................................................................................................... 36
7.6
L
INKING
F
AN
T
ACHOMETERS TO
PWM
S
............................................................................................ 36
7.7
S
YSTEM
S
YNCHRONIZATION
.............................................................................................................. 36
CHAPTER 8
REGISTER SET................................................................................................................ 37
8.1
U
NDEFINED
R
EGISTERS
.................................................................................................................... 40
8.2
R
EGISTER
10
H
:
SMSC
T
EST
R
EGISTER
............................................................................................ 40
8.3
R
EGISTER
1E,
1F
H
:
O
FFSET
R
EGISTERS
........................................................................................... 40
8.4
R
EGISTERS
20-24
H
,
70-72
H
:
V
OLTAGE
R
EADING
.............................................................................. 40
8.5
R
EGISTERS
25-27
H
:
T
EMPERATURE
R
EADING
................................................................................... 41
8.6
R
EGISTERS
28-2F
H
:
F
AN
T
ACHOMETER
R
EADING
.............................................................................. 42
8.7
R
EGISTERS
30-32
H
:
C
URRENT
PWM
D
UTY
....................................................................................... 42
8.7.1
Manual Mode........................................................................................................................... 43
8.8
R
EGISTER
3E
H
:
C
OMPANY
ID ........................................................................................................... 44
8.9
R
EGISTER
3F
H
:
V
ERSION
/
S
TEPPING
................................................................................................ 44
8.10
R
EGISTER
40
H
:
R
EADY
/L
OCK
/S
TART
M
ONITORING
........................................................................ 44
8.11
R
EGISTER
41
H
:
I
NTERRUPT
S
TATUS
R
EGISTER
1............................................................................ 46
8.12
R
EGISTER
42
H
:
I
NTERRUPT
S
TATUS
R
EGISTER
2............................................................................ 47
8.13
R
EGISTER
7D
H
:
I
NTERRUPT
S
TATUS
R
EGISTER
3 ........................................................................... 48
8.14
R
EGISTER
43
H
:
VID ...................................................................................................................... 48
8.15
R
EGISTERS
44-4D
H
,
73-78
H
:
V
OLTAGE
L
IMIT
R
EGISTERS
.............................................................. 49
8.16
R
EGISTERS
4E-53
H
:
T
EMPERATURE
L
IMIT
R
EGISTERS
................................................................... 50
8.17
R
EGISTERS
54-5B
H
:
F
AN
T
ACHOMETER
L
OW
L
IMIT
........................................................................ 51
8.18
R
EGISTERS
5C-5E
H
:
F
AN
C
ONFIGURATION
.................................................................................... 51
8.18.1
Bits [7:5] Zone/Mode ............................................................................................................ 51
8.18.2
Bit [4] PWM Invert ................................................................................................................ 52
8.18.3
Bit [3] Reserved.................................................................................................................... 52
8.18.4
Bits [2:0] Spin Up.................................................................................................................. 52
8.19
R
EGISTERS
5F-61
H
:
A
UTO
F
AN
S
PEED
R
ANGE
,
PWM
F
REQUENCY
................................................ 53
8.20
R
EGISTER
62
H
,
63
H
:
M
IN
/O
FF
,
S
PIKE
S
MOOTHING
......................................................................... 55
8.21
R
EGISTERS
64-66
H
:
M
INIMUM
PWM
D
UTY
C
YCLE
......................................................................... 56
8.22
R
EGISTERS
67-69
H
:
T
EMPERATURE
LIMIT .................................................................................... 57
8.23
R
EGISTERS
6A-6C
H
:
A
BSOLUTE
T
EMPERATURE
L
IMIT
.................................................................... 57
8.24
R
EGISTERS
6D-6E
H
:
Z
ONE
HYSTERESIS
R
EGISTERS
.................................................................. 58
8.25
R
EGISTER
6F:
XOR
T
EST
R
EGISTER
............................................................................................. 59
8.26
R
EGISTER
79
H
:
T
EST
M
ODE
R
EGISTER
.......................................................................................... 59
8.27
R
EGISTER
7A
H
:
E
RROR
D
EBUG
R
EGISTER
..................................................................................... 60
8.28
R
EGISTER
7B
H
:
T
EST
D
IGITAL
V
ALUE
R
EGISTER
............................................................................ 61
8.29
R
EGISTER
7C
H
:
S
PECIAL
F
UNCTION
R
EGISTER
.............................................................................. 61
8.30
R
EGISTER
7E
H
:
I
NTERRUPT
E
NABLE
R
EGISTER
.............................................................................. 62
8.31
R
EGISTER
7F
H
:
C
ONFIGURATION
R
EGISTER
................................................................................... 63
8.32
R
EGISTER
80
H
:
F
AN
T
EMP
I
NTERRUPT
E
NABLE
R
EGISTER
.............................................................. 64
8.33
R
EGISTER
81
H
:
TACH_PWM
R
EGISTER
....................................................................................... 65
8.34
R
EGISTER
83
H
:
S
YNC
P
ULSE
C
ONFIGURATION
REGISTER:
ON/OFF ............................................ 66
8.34.1
Bit [4] ON.............................................................................................................................. 66
8.35
R
EGISTERS
86-88
H
:
S
MOOTH
T
EMPERATURE
R
EADING
R
EGISTERS
................................................ 66
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