The LMKDB1108 can be configured to
start up in one of two modes during power-on/reset (POR). SBEN enable pin determines
the mode of operation during power supply ramp up. Below are both the modes for the
device:
- SMBus Mode Only (EVM
default): When SBEN pin is set to low during the power up. SBI interface is
disabled, output enable (OE) control is only accessible through the SMBus
and OE control pins.
- SBI Mode: When SBEN
pin is set to high during power up, SBI interface is enabled and the outputs
can be controlled through SBI interface, as well as SMBus and OE control
pins.