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DM164 датащи(PDF) 11 Page - Silicon Touch Technology Inc.

номер детали DM164
подробное описание детали  8x3-CHANNEL CONSTANT CURRENT LED DRIVER
Download  30 Pages
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производитель  SITI [Silicon Touch Technology Inc.]
домашняя страница  http://www.siti.com.tw
Logo SITI - Silicon Touch Technology Inc.

DM164 датащи(HTML) 11 Page - Silicon Touch Technology Inc.

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點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
DM164
8x3-CHANNEL CONSTANT CURRENT LED DRIVERS
Version:A.002
Page 10
Serial Data Interface
The DM164 includes a flexible data transfer interface. The data can be transferred from
DIN pin to the shift registers at either the rising edge of DCK or the falling edge of DCK
depending on the signal DCKPH. After all data are clocked in, a high level LTH signal can
transfer the serial data to the data latches (Level Sensitive). The serial data format can be
192-bit or 384-bit wide, depending on the operating mode of the device.
Operating Modes
The DM164 has two operating modes depending on the signal MSEL. Table 1 shows the
available operating modes. When MSEL = H, the device operates at the D&G mode. D&G
mode is used to set dot correction data and global brightness control data after IC power
up or any time. When MSEL = L, the device becomes GD mode. GD mode is used to set
grayscale PWM data after D&G mode.
Table 1. Two Operating Modes
MSEL
MODE
SHIFT REGISTER
H
Dot Correction Data & Global Brightness Control
Data Input Mode (D&G mode)
192-bit
L
Grayscale PWM Data Input Mode (GD mode)
384-bit
D&G Mode Data Format
At D&G mode, dot correction data of all channels and global brightness control data of
different colors are transferred into the chip at the same time. The complete dot correction
data format consists of 24 x 7-bit and the global brightness control data of three different
colors consists of 3 x 8-bit. The total shift registers width at D&G mode is 192-bit. All data
is clocked in with MSB first. Figure 1 shows the D&G mode data format.
IOUT00
DC0
IOUT00
DC6
‧‧‧
IOUT01
DC0
IOUT22
DC6
IOUT23
DC0
IOUT23
DC6
‧‧‧
MSB
191
24
185
184
30
31
GB_R7
GB_R0
23
LSB
0
16
‧‧‧
‧‧‧
‧‧‧
IOUT23
IOUT22~IOUT01
IOUT00
GLOBAL_R
GB_G7
GB_G0
GB_B7
‧‧‧
GB_B0
GLOBAL_G
GLOBAL_B
7
8
15
Figure 1. D&G Mode Data Format (D&G[191:0])
To operate the DM164 in D&G mode, MSEL must be set to high. The shift register width is
then set to 192-bit wide. The input data can be transferred at either the rising edge of DCK


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