Datasheet

LT3746
15
3746fa
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operaTion
Figure 4. Grayscale PWM Dimming and Precharging Signal Timing Chart
Figure 3. Serial Data Input and Output Timing Chart
PWMCK 40964095 1 235841 2 3
C1/EN
I(LED00) REG = 0x002
REG = 0xFFF
TRACKING PHASE PRECHARGING PHASE
REG = 0x000
I(LED01)
t
WH-PWM
t
WL-PWM
t
PD-PWM
I(LED31)
PRECHG
3585
3746 F04
SCKI 378
1 378
INPUT DATA STATUS DATA
385 1 385384 386
3746 F03
386
385 384 385 386 1
C0 = 0C0 = 1C1
C0 = 1 F0C1
0x F0C1
C1
GS 0
LSB
C0 = 0 F0C1
GS 0
LSB
GS 31
MSB
GS 31
MSB
C1 F00
GS 0
LSB
GS 0
LSB + 1
GS 31
MSB
GS 31
MSB
DC 0
LSB
DC 0
LSB
DC 0
LSB + 1
DC 31
MSB
DC 31
MSB
386 11
SDI
LDI
SR[1]
LDO
SR[0]
SCKO
SDO/
SR[385]
t
WH-LDI
t
HD-LDI
t
SU-LDI
t
WH-CKI
t
WL-CKI
t
SU-SDI
t
HD-SDI
t
PD-LD↑
t
PD-LD↓
t
PD-SCK↑
t
PD-SCK↓
t
PD-SD
DC 31
MSB
DC 31
MSB
DC 31
MSB – 1
GS 31
MSB
DC 31
MSB
F00