LP5523 datasheet(30/61 Pages) TI2

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LP5523

SNVS550E – SEPTEMBER 2009 – REVISED JANUARY 2017

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Run Program:Run program mode executes the instructions stored in the program memory. Execution

once). Program start address can be programmed to the PC register. The PC is reset to zero when the

PC’s upper limit value is reached.

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Halt: Instruction execution aborts immediately, and engine operation halts.

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01 — Bit [5:4] ENGINE1_MODE

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00 = disabled.

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01 = load program to SRAM, reset engine 1 PC.

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10 = run program as defined by ENGINE1_EXEC bits.

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11 = halts the engine.

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01 — Bits [3:2] ENGINE2_MODE

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00 = disabled.

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01 = load program to SRAM, reset engine 2 PC.

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10 = run program as defined by ENGINE2_EXEC bits.

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11 = halts the engine.

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01 — Bits [3:2] ENGINE3_MODE

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00 = disabled.

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01 = load program to SRAM, reset engine 3 PC.

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10 = run program as defined by ENGINE3_EXEC bits.

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11 = halts the engine.

02 OUTPUT DIRECT/RATIOMETRIC MSB

A particular feature of the LP5523 is the ratiometric up/down dimming of the RGB LEDs. In other words, the LED

driver PWM output varies in a ratiometric manner. By a ratiometric approach the emitted color of an RGB LED

remains the same regardless of the initial magnitudes of the R/G/B PWM outputs. For example, if the PWM

output of the red LED output is doubled, the output of green LED is doubled also.

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02 — Bit [0] D9_RATIO_EN

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1 = enables ratiometric dimming for D9 output.

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0 = disables ratiometric dimming for D9 output.

03 OUTPUT DIRECT/RATIOMETRIC LSB

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03 — Bit [7] D8_RATIO_EN

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1 = enables ratiometric dimming for D8 output.

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0 = disables ratiometric dimming for D8 output.

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03 — Bit [0] D1_RATIO_EN to Bit [6] D7_RATIO_EN

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The options for D1 output to D7 output are the same as previous: see 03 — Bit [7].

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