emc2105 Standard Microsystems Corp., emc2105 Datasheet - Page 61
emc2105
Manufacturer Part Number
emc2105
Description
Emc2105 Rpm-based High Side Fan Controller With Hardware Thermal Shutdown
Manufacturer
Standard Microsystems Corp.
Datasheet
1.EMC2105.pdf
(91 pages)
- Current page: 61 of 91
- Download datasheet (2Mb)
ADDR
RPM-Based High Side Fan Controller with Hardware Thermal Shutdown
Datasheet
45h
SMSC EMC2105
6.21
R/W
R/W
Bit 2 - 1 - ERR_RNG[1:0] - Control some of the advanced options that affect the error window. When
the measured fan speed is within the programmed error window around the target speed, then the fan
drive setting is not updated. The algorithm will continue to monitor the fan speed and calculate
necessary drive setting changes based on the error, however these changes are ignored.
The Gain Register stores the gain terms used by the proportional and integral portions of each of the
RPM based Fan Speed Control Algorithms. These gain terms are used as the KD, KI, and KP gain
terms in a classic PID control solution.
Gain Register
1
0
0
1
1
1
0
0
1
1
Gain Register
REGISTER
ERR_RNG[1:0]
DER_OPT[1:0]
B7
-
Table 6.30 Error Range Options
Table 6.29 Derivative Options
Table 6.31 Gain Register
0
0
1
0
1
0
0
1
0
1
B6
DATASHEET
-
61
B5
GAIND[1:0]
are used effectively causing the derivative term to
Basic derivative. The derivative of the error from
to the iterative Fan Drive Register setting and is
Both the basic derivative and the step derivative
B4
the current drive setting and the target is added
the current drive setting and the target is added
Step derivative. The derivative of the error from
to the iterative Fan Drive Register setting (in
have double the effect of the derivative term
addition to proportional and integral terms)
not capped by the Fan Step Register.
B3
GAINI[1:0]
No derivative options used
0 RPM (default)
B2
OPERATION
OPERATION
100 RPM
200 RPM
(default).
50 RPM
B1
GAINP[1:0]
Revision 1.74 (05-08-08)
B0
DEFAULT
2Ah
Related parts for emc2105
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Interface, Integrated USB2.0 Compatible 3-Port Hub
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Lan91c100fd Rev. B Feast Fast Ethernet Controller With Full Duplex Capability
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Feast ? Ast Ethernet Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Com20022i 10 Mbps Arcnet Ansi 878.1 Controller With 2k X 8 On-chip Ram
Manufacturer:
Standard Microsystems Corp.
Part Number:
Description:
Lpc47n207 Lpc Super I/o Irda Hot Docking Chip With Uart Data Brief
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Advanced I/o With X-bus Interface
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Fdc37m707 Enhanced Super I/o Controller With Wake-up Features
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Twenty Pin Uart Tpuart Corporation
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Enhanced Small Device Interface Controller
Manufacturer:
Standard Microsystems Corp.
Part Number:
Description:
Rpm-based Pwm Fan Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Rpm-based Pwm Fan Controller
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
Emc1001 1.5?c Smbus Temperature Sensor In Miniature Sot-23
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Triple Temperature Sensor With Beta Compensation And Hotter Of Two Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Multiple Temperature Sensor With Beta Compensation And Hottest Of Thermal Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet:
Part Number:
Description:
1 Degree C Triple Temperature Sensor With Resistance Error Correction & Hotter Of Two Zones
Manufacturer:
Standard Microsystems Corp.
Datasheet: