米6体育平台手机版

ZHCSHV7C October 2018 – July 2024 LP5018 , LP5024

PRODUCTION DATA

7.3.2 LED Bank Control

For most LED-animation effects, like blinking and breathing, all the RGB LEDs have the same lighting pattern. Instead of controlling the individual LED separately, which occupies the microcontroller resources heavily, the LP50xx device provides an easy coding approach, the LED bank control.

Each channel can be configured as either independent control or bank control through the LEDx_Bank_EN register. When LEDx_Bank_EN = 0 (default), the LED is controlled independently by the related color-mixing and intensity-control registers. When LEDx_Bank_EN = 1, the LP50xx device drives the LEDs in LED bank-control mode. The LED bank has its own independent PWM control scheme, which is the same structure as the PWM scheme of each channel. For more details, see PWM Control for Each Channel. When a channel is configured in LED bank-control mode, the related color mixing and intensity control is governed by the bank control registers (BANK_A_COLOR, BANK_B_COLOR, BANK_C_COLOR, and BANK_BRIGHTNESS) regardless of the inputs on its own color-mixing and intensity-control registers.

Figure 7-5 Bank PWM Control Scheme

Table 7-1 Bank Number and LED Number Assignment

OUT NUMBER			OUT CORLOR	BANK Number	RGB LED MODULE NUMBER
LP5024VQFN	LP5018VQFN	LP5018VSSOP	OUT CORLOR	BANK Number	RGB LED MODULE NUMBER
OUT0	OUT0	OUT0	OUT0_COLOR	Bank A	LED0
OUT1	OUT1	OUT1	OUT1_COLOR	Bank B
OUT2	OUT2	—	OUT2_COLOR	Bank C
OUT3	OUT3	OUT2	OUT3_COLOR	Bank A	LED1
OUT4	OUT4	OUT3	OUT4_COLOR	Bank B
OUT5	OUT5	OUT4	OUT5_COLOR	Bank C
OUT6	OUT6	—	OUT6_COLOR	Bank A	LED2
OUT7	OUT7	OUT5	OUT7_COLOR	Bank B
OUT8	OUT8	OUT6	OUT8_COLOR	Bank C
OUT9	OUT9	OUT7	OUT9_COLOR	Bank A	LED3
OUT10	OUT10	OUT8	OUT10_COLOR	Bank B
OUT11	OUT11	—	OUT11_COLOR	Bank C
OUT12	OUT12	OUT9	OUT12_COLOR	Bank A	LED4
OUT13	OUT13	OUT10	OUT13_COLOR	Bank B
OUT14	OUT14	OUT11	OUT14_COLOR	Bank C
OUT15	OUT15	OUT12	OUT15_COLOR	Bank A	LED5
OUT16	OUT16	—	OUT16_COLOR	Bank B
OUT17	OUT17	OUT13	OUT17_COLOR	Bank C
OUT18	—	—	OUT18_COLOR	Bank A	LED6
OUT19	—	OUT14	OUT19_COLOR	Bank B
OUT20	—	OUT15	OUT20_COLOR	Bank C
OUT21	—	OUT16	OUT21_COLOR	Bank A	LED7
OUT22	—	OUT17	OUT22_COLOR	Bank B
OUT23	—	—	OUT23_COLOR	Bank C

With the bank control configuration, the LP50xx device enables users to achieve smooth and live LED effects globally with an ultrasimple software effort. Figure 7-6 shows an example using LED0 as an independent RGB indicator and others with group breathing effect.

LP5018 LP5024 Bank PWM Control Example
(Applicable to LP5024 VQFN and LP5018 VQFN only)

Figure 7-6 Bank PWM Control Example (Applicable to LP5024 VQFN and LP5018 VQFN only)