LP55281TLSLASHNOPB datasheet(3/35 Pages) TI1

3 / 35 page

LP55281

www.ti.com

SNVS458B – JUNE 2007 – REVISED JUNE 2007

Table 1. Pin Descriptions (continued)

Name

Type

Description

IRGB

Input

Bias Current Set Resistor for RGB

Drivers

GND_RGB1

Ground

Ground for RGB1-2 Currents

GND_RGB2

Ground

Ground for RGB3-4 Currents

GND

Ground

ASE2

Input

Audio Synchronization Input 2

SI/A0

Logic Input

Serial Input (SPI), Address Select (I2C)

Logic Output

Serial Data Out (SPI)

Output

Red LED 2 Output

NRST

Input

Asynchronous Reset, Active Low

Output

Red LED 4 Output

VDD1

Power

Supply Voltage

VDDIO

Power

Supply Voltage for Input/Output Buffers

and Drivers

SCK/SCL

Logic Input

Clock (SPI/I2C)

Output

Green LED 2 Output

ALED

Output

Audio Synchronized LED Output

Output

Green LED 4 Output

ASE1

Input

Audio Synchronization Input 1

IRT

Input

Oscillator Frequency Resistor

IF_SEL

Logic Input

Interface (SPI or I2C compatible)

Selection (IF_SEL = 1 for SPI)

Output

Blue LED 2 Output

GND

Ground

Output

Blue LED 4 Output

GNDA

Ground

Ground for Analog Circuitry

VREF

Output

Reference Voltage

VDDA

Power

Internal LDO Output

VDD2

Power

Supply Voltage

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