點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
新竹市科學園區展業一路9號7樓之1
9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C.
DM634
Tel：886-3-5645656
Fax：886-3-5645626
Serial Data Interface
The serial-in data (DAI) will be clocked into 16 × 16 bit shift registers synchronized on the
rising edge of the clock (DCK). The data will be transferred into the 16 × 16 bit latch registers
when the strobe signal (LAT ) is kept at high level (level trigger); otherwise, the data will be held.
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 if serial out selection (SOMODE) is kept at low level. And if serial out selection (SOMODE)
is kept at high level, the serial-out data (DAO) will be shifted out on synchronization to the falling
edge of the clock (DCK).
Input Data Format
Serial-out Data Format
shift out first
OUT 15
D15 [15]
MSB
THF
D15[13]
D15[12]
D15[11]
D14[11]
D15[10]
D14 [10]
D15 [9]
D14[9]
D15[8]
D15[7]
D15 [6]
D14[6]
D15[5]
D14[5]
D15[4]
D14[4]
D15[3]
D14 [3]
D15 [2]
D14[2]
D15[1]
D14[1]
E[ 15]
LSB
OUT 14
D14[15]
MSB
D14[14]
D14 [13] D14 [12]
D14[8]
D14 [7]
E[ 14]
LSB
OUT 0
D0[7]
D0 [15]
MSB
D0 [14]
D0[13]
D0[12]
D0 [11]
D0[10]
D0[9]
D0 [8]
D0 [6]
D0 [5]
D0[4]
D0[3]
D0 [2]
D0 [1]
E[0]
LSB
＊E[15], E[14], ... E[ 0] are Error Messages of LED Open Detection. ｀1＇is normal, and ｀0＇is abnormal.
＊
THF is the Error Message of chip thermal detection. ｀1＇is normal, and ｀0＇is abnormal.
16-channel 16-bit PWM Constant Current LED Driver
Version : A.003
Page 10
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