AL58263Q

Document number: DS46687 Rev. 2 - 2

13 of 26

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November 2024

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AL58263Q

Q

Functional Descriptions (continued)

Reset APDM/PWM Counter (Set CMD[11] = ”1”)

EMI Reduction Grayscale Clock (Double-Edge Grayscale Clock)

GCK

1

65536

IOUT

Traditional Grayscale Clock (single-edge trigger)

A whole period of 16bits resolution must be composed by 65536 traditional grayscale clocks because constant current outputs only are triggered at

the rising edge of clocks. Therefore, a controller has to transmit fast grayscale clocks in order to accomplish high refresh rate when users adopt

traditional PWM chips. The AL58263Q supports a specific mode of double-edge grayscale clocks which trigger both at rising and falling edges of

clocks. By this approach, a whole period of 16bits resolution is composed by only 32768 double-edge grayscale clocks and the electromagnetic

interference would be decreased substantially due to slow grayscale clocks.

(AL58263Q)