emc2104 Standard Microsystems Corp., emc2104 Datasheet - Page 49

• Manufacturer Part Number: emc2104
• Description: Emc2104 Dual Rpm-based Pwm Fan Controller With Hardware Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown
Datasheet
SMSC EMC2104
6.1.1
ADDR
FCh
FDh
FEh
E0h
E1h
E2h
E3h
E4h
E5h
E6h
FFh
EF
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
During Power-On-Reset (POR), the default values are stored in the registers. A POR is initiated when
power is first applied to the part and the voltage on the VDD supply surpasses the POR level as
specified in the electrical characteristics. Any reads to undefined registers will return 00h. Writes to
undefined registers will not have an effect.
Lock Entries
The Lock Column describes the locking mechanism, if any, used for individual registers. All SWL
registers are Software Locked and therefore made read-only when the LOCK bit is set.
Product Features
Enable Register
Manufacturer ID
GPIO Direction
GPIO Interrupt
Software Lock
Configuration
GPIO Output
Configuration
GPIO Output
GPIO Status
REGISTER
GPIO Input
Muxed Pin
Product ID
Revision
Register
Register
Register
Register
Register
NAME
Table 6.1 EMC2104 Register Set (continued)
Controls the GPIO direction for GPIOs 1
Controls the output state of GPIOs 1 - 4
Indicates change of state for inputs on
Controls the output type GPIOs 1 - 4
Controls the pin function for the pins
Enabled Interrupts for GPIOs 1 - 4
Stores information about which pin
controlled product features are set
Stores the inputs for GPIOs 1 - 4
Stores the unique Product ID
muxed with PWMs or GPIOs
Stores the Manufacturer ID
Locks all SWL registers
Revision Registers
DATASHEET
Lock Register
GPIOs 1 - 4
FUNCTION
Revision
49
- 4
DEFAULT
VALUE
1Dh
5Dh
01h
00h
00h
00h
00h
00h
00h
00h
00h
02h
Revision 1.74 (05-08-08)
LOCK
SWL
No
No
No
No
No
No
No
No
No
No
No
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