JAJSBK7H January 2012 – February 2018 DS125DF410
The configuration mode is selected by the state of the SMBus Enable pin (pin 20) when the DS125DF410 is powered-up. This pin should be either left floating or tied to the device VDD through an optional 1kΩ resistor. The effect of each of these settings is shown in Table 4.
|Float||SMBus Master Mode||Device reads its configuration from an external EEPROM on power-up.||Pull low to initiate reading configuration data from external EEPROM|
|High (1)||SMBus Slave Mode||Device is configured over the SMBus by an external controller.||Tie low to enable proper address strapping on power-up|