emc2105 Standard Microsystems Corp., emc2105 Datasheet - Page 20

• Manufacturer Part Number: emc2105
• Description: Emc2105 Rpm-based High Side Fan Controller With Hardware Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

Revision 1.74 (05-08-08)
4.7
4.8
The EMC2105 will respond to the ARA in the following way if the ALERT# pin is asserted.
1. Send Slave Address and verify that full slave address was sent (i.e. the SMBus communication
2. Set the MASK bit to clear the ALERT# pin.
The EMC2105 SMBus Address is fixed at 0101_111xb.
Attempting to communicate with the EMC2105 SMBus interface with an invalid slave address or invalid
protocol will result in no response from the device and will not affect its register contents.
The EMC2105 includes an SMBus time-out feature. Following a 30ms period of inactivity on the
SMBus, the device will time-out and reset the SMBus interface.
SMBus Address
SMBus Time-out
from the device was not prematurely stopped due to a bus contention event).
DATASHEET
RPM-Based High Side Fan Controller with Hardware Thermal Shutdown
20
SMSC EMC2105
Datasheet