16-bit Constant Current LED Driver with Error Detection

Version:A.002

Page 12

未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任

Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.

DM13G

Serial Data Interface

When MODE pin is set to low, the serial-in data (DAI) will be clocked into 16 bit shift

register synchronized on the rising edge of the clock (CLK). The data ‘1’ represents the

corresponding current output ‘ON’, while the data ‘0’ stands for ‘OFF’. The data will be

transferred into the 16 bit latch synchronized at the rising edge of the strobe signal (LAT);

otherwise, the data will be latched. The latch pulse should be sent after the falling edge of

the last clock within a frame data. The trigger timing of the serial-out data (DAO) will be

shifted out on synchronization to the rising edge of the clock. All outputs are turned off while

ENB is kept at high level. And they are active when ENB shift to low.

0

1

2

3

131415

CLK

DAI

DAO

previous data

01

2

LAT

ENB

IOUT0

IOUT1

on

off

on

off

on

off

on

off

on

off

on

off

on

off

high

low

high

low

high

low

high

low

high

low

Tsetup(L)

.

.

.

.

.

.

IOUT12

IOUT13

IOUT14

IOUT15

IOUT2