description of the INTERLEAVE command. The output voltage setting pins, V1 and V0, are used to establish the maximum output voltage that the device can be set to by a PMBus command. The output voltage pin-strap setting is used to provide a level of protection of the maximum system operating range. Other pin-strap settings can be configured to achieve certain power up conditions. This is not necessary since the PMBus commands allow the user to set any and all parameters. PMBus Commands for Tracking Mode Many PMBus commands can be used to precisely configure the ZL2005 to fit an application. This section describes the PMBus commands that are specific to configuring the tracking mode. These commands for a tracking device are TRACK_CONFIG, TON_DELAY and VOUT_COMMAND. See Zilker Labs Application Note AN2013 for a complete list of PMBus commands. The TRACK_CONFIG command is used to enable the tracking mode. This command also has bit fields that set options for the tracking mode. The tracking features using the built-in capabilities of Zilker Labs ICs. Overview Power supply voltage tracking is a method of controlling a number of power supply output voltages. Powering a mix of integrated circuit technologies requires careful consideration of tween each technology. It is usually very important that a certain power supply rail does not exceed another power supply rails level under any condition. An example of this requirement is in the powering of a microcontrollers core voltage versus powering its I/O pads. The core voltage is typically a lower value than the I/O pad voltage. Because of certain characteristics of the microcontrollers integrated technology the core voltage should not exceed the I/O pad voltage. Therefore, voltage tracking is voltage always below a master power supply voltage. The ZL2005 includes an analog input pin, VTRK, which is used to track another voltage supply. When the ZL2005 is configured to the voltage tracking mode, the voltage applied to the VTRK p Specifications are subject to change without n