LP55231EVM Users Guide (Rev. B) TI（LP55231EVM用户指南(启B) TI）.pdf

Using the LP55231 Evaluation Kit Users Guide Literature Number: SNVU214B April 2013– Revised December 2015 All trademarks are the property of their respective owners. Users Guide SNVU214B– April 2013– Revised December 2015 The LP55231 Evaluation Kit This document describes how to get the LP55231 evaluation board up and running, how to use evaluation and programming software, and how to get started with programming. The application note is divided into four separate sections: General Description provides general information for getting started with the LP55231 evaluation hardware and software. LP55231 Programming shows LP55231 programming flow. Instruction Set Details gives a detailed description of the device’s instruction set. Finally, Programming Examples gives practical programming examples. General Description The LP55231 provides flexibility and programmability for dimming and sequencing control. Each LED can be controlled directly and independently through the serial bus (in other words, without programming the engines), or LED drivers can be controlled by programming the execution engines. The LP55231 has three independent program execution engines, so it is possible to form three independently programmable LED banks. LED drivers can be grouped based on their function so that, for example, the first bank of drivers can be assigned to the keypad illumination, the second bank to the “funlights” and the third group to the indicator LED(s). Each bank can contain 1 to 9 LED driver outputs. Instructions fo