LP5562 datasheet(16/52 Pages) TI1

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LP5562

SNVS820A – APRIL 2013 – REVISED SEPTEMBER 2015

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When engine 1 is in Direct control mode, the engine 1 PWM output is controlled by B PWM I2C register

(02h).

–

When engine 2 is in Direct control mode, the engine 2 PWM output is controlled by G PWM I2C register

(03h).

–

When engine 3 is in Direct control mode, the engine 3 PWM output is controlled by R PWM I2C register

(04h).

7.3.3.3 Program Execution Engine Program Counter (PC)

Program execution engine Program Counter tells the current program code command, which engine is executing.

By setting the program counter value before starting the engine execution, user can set the starting point of the

program execution.

Table 8. Engine1 PC Register (09h), Engine2 PC

NAME

BIT

DESCRIPTION

3:0

Program counter value from 0 to 15d

7.3.3.4 Program Execution Engine Programming Commands

The LP5562 has three independent programmable engines (1, 2, 3). Trigger connections between engines are

common for all engines. All engines have own program memory sections for storing LED lighting patterns.

Brightness control and patterns are done with 8-bit PWM control (256 steps) to get accurate and smooth color

control. Program execution is timed with a 32.7-kHz clock. This clock can be generated internally or an external

32-kHz clock can be connected to the CLK_32K pin. Using an external clock enables synchronization of LED

timing to this clock rather than an internal clock. Selection of the clock is made with address 08H bits

INT_CLK_EN and CLK_DET_EN. See External Clock for details. Supported commands are listed in Table 9.

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