EMC2103 Datasheet, PDF (36/84 Pages) SMSC Corporation – RPM-Based Fan Controller with HW Thermal Shutdown

RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
Table 6.1 EMC2103 Register Set (continued)
ADDR R/W
REGISTER
NAME
FUNCTION
DEFAULT
VALUE LOCK
Diode Configuration
11h R/W External Diode 1 Stores the Ideality Factor used for
Ideality Register ^{External Diode 1}
12h ** R/W External Diode 2 Stores the Ideality factor used for
Ideality Register ** ^{External Diode 2 and External Diode}
3
14h R/W External Diode 1 Configures the beta compensation
Beta Configuration ^{settings for External Diode 1}
15h **
R/W External Diode 2 Configures the beta compensation
Beta Configuration ^{settings for External Diode 2}
**
17h R/W External Diode Configures the Resistance Error
REC
Correction functionality for all
Configuration
external diodes
19h R/W External Diode 1 Stores the critical temperature limit
once
Tcrit Limit
for External Diode 1
1Ah ** R/W External Diode 2 Stores the critical temperature limit
once
Tcrit Limit **
for External Diode 2
1Bh ** R/W External Diode 3 Stores the critical temperature limit
once
Tcrit Limit **
for External Diode 3
1Dh R/W
once
Internal Diode
Tcrit Limit
Stores the critical temperature limit
for the Internal Diode
Configuration and control
1Fh
R
Tcrit Status
Stores the status bits for all
temperature channel tcrit limits
20h R/W
Configuration
Configures the Thermal / Critical
Shutdown masking options
21h R/W Configuration 2 Controls the conversion rate for
monitoring of all channels
23h R-C Interrupt Status Stores the status bits for temperature
channels
24h R-C High Limit Status Stores the status bits for all
temperature channel high limits
25h R-C Low Limit Status Stores the status bits for all
temperature channel low limits
26h R-C
Diode Fault
Stores the status bits for all
temperature channel diode faults
27h R-C
Fan Status
Stores the status bits for the RPM
based Fan Speed Control Algorithm
28h R/W Interrupt Enable Controls the masking of interrupts on
Register
all temperature channels
29h R/W
Fan Interrupt Controls the masking of interrupts for
Enable Register ^{the Fan Driver}
12h
12h
10h
10h
07h
64h
(100°C)
64h
(100°C)
64h
(100°C)
64h
(100°C)
00h
00h
0Eh
00h
00h
00h
00h
00h
00h
00h
SWL
SWL
SWL
SWL
SWL
Write
Once
Write
Once
Write
Once
Write
Once
No
SWL
SWL
No
No
No
No
No
No
No
PAGE
Page 44
Page 44
Page 45
Page 45
Page 46
Page 47
Page 47
Page 47
Page 47
Page 50
Page 47
Page 48
Page 49
Page 50
Page 50
Page 50
Page 51
Page 51
Page 52
Revision 0.85 (01-29-08)
36
DATASHEET
SMSC EMC2103