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Atmel LED Drivers-MSL3163 and MSL3164
16-string White & RGB LED Drivers with Adaptive Power
Control, E2PROM, and SPI/I2C/SMBus Serial Interface
Register Power-Up Defaults
Register power-up default values are shown in Table 3
Table 3. Atmel LED Drivers-MSL3163/4 Register Power-Up Defaults
REGISTER NAME
AND ADDRESS
POWER-UP CONDITION
D7
D6
D5
REGISTER DATA
D4 D3 D2
D1
D0
0x00
0x01
CONTROL0
CONTROL1
LED strings STR0 thru STR7 enabled
LED strings STR8 thru STR15 enabled
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0x02 POWERCTRL
Efficiency Optimizer outputs enabled
FBO open circuit detection enabled
String open circuit detection enabled
LED short circuit detection enabled
GSC maximum fault detection disabled
PHI minimum fault detection disabled
I 2 C bus timeout detection enabled
Device awake
0
1
0
0
1
1
1
1
0x08
0x09
0x0A
0x0B
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
0x1C
0x1D
FLTMASK0
FLTMASK1
FBOCTRL0
FBOCTRL1
ISTR
OSCCTRL
GSCCTRL
GSCGEN
GSCMUL
GSCDIV
GSCMAX
PHICTRL
PHIGEN
PHIMIN
Fault detection enabled on all strings
Current sink error confirmation delay = 4μS
FBO power supply correction delay = 2ms
Efficiency Optimizer recalibration delay = 1s
Efficiency Optimizer correction steps = 6
Current sink error detection not disabled
Auto recalibration enabled
PWM settings used during auto recalibration
PWM duty cycle = 100% during initial calibration
Efficiency Optimizer operates using 1μA steps
LED short circuit confirmation delay = 4μs
Strings current set to 50% of R ILED setting
f OSC = 20MHz
GSC synchronized to the falling edge of the
external signal
Although disabled, Internal GSC frequency =
20MHz / (19 + 1) = 1MHz
GSC multiplied by 4
GSC not divided
Although disabled, GSC max count is set to 19
clock cycles
PHI synchronized to the falling edge of the
external signal
Although disabled,
Internal PHI frequency = 20MHz / (8 * (10416 + 1))
= 240Hz
No PHI minimum
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
1
0
0
0
0
0
0
0
0
0
1
1
0
0
1
1
0
1
1
0
0
1
0
0
0
1
0
0
1
0
0
0
1
1
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
0
1
1
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
1
0
0
1
0
1
0
1
0
0
0
0
0
0
1
1
0
0
1
0
0
1
0
1
0
1
0
0
0
0
0
0
Atmel LED Drivers-MSL3163/MSL3164
19
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