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Atmel LED Driver-MSL3162
16-string, RGB and White LED Drivers with Adaptive
Power Control and 1MHz I 2 C/SMBus Serial Interface
Table 5. Atmel LED Driver-MSL3162 Register Power-up Defaults
REGISTER NAME
AND ADDRESS
POWER-UP CONDITION
D7
D6
REGISTER DATA
D5 D4 D3 D2
D1
D0
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x2A
0x2B
0x30
to
0x3F
0x40
to
0x4F
0x50
to
0x5F
0x90
PWMCTRL0
PWMCTRL1
SYSTEMP
OTTEMP
OTSLOPE
GSCMAX
PHIMIN
HPSCR
FRATE
GINT
ISTR0
to
ISTR15
PHDLY0
to
PHDLY15
PWM0
to
PWM15
E2ADDR
PWM is individually controlled by registers PWM0 to
PWM15
GSC low- and high-frequency fault detection is disabled
Over-temperature derating of LED strings is disabled
PHI input falling edge synchronizes LED PWM
Global intensity control uses GINT register
GSC input is divided by value of GSC prescaler register
External GSC signal at GSC input pin is used
External PHI signal at PHI input pin is used
PWM input pin is unused
System temperature, SYSTEMP, is 0°C
Temperature compensation threshold, OTCOMP, is 255°C
Over-temperature derating slope, OTSLOPE, is 0
Maximum GSC pulse count is 65536 (0xFFFF)
Minimum PHI pulse count is 0
Internal GSC clock is GSC input pin frequency
PHI multiplier is 1
Global intensity PWM duty ratio GINT = 16/64 = 25%
Individual LED string current I LED = 7/63 times the full-scale
current set by external resistor R ILED
Individual LED string phase delay t DLYx = 0
Individual LED string PWM duty ratio D PWM = 1/256 = 0.39%
User EEPROM 7-bit address = 0x00
1
0
0
1
0
1
1
0
0
0
0
0
0
0
0
0
1
0
0
1
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
1
0
0
0
0
1
0
0
0
0
0
0
0
1
0
1
1
0
0
0
0
1
1
0
0
0
0
0
0
1
0
1
1
0
0
0
0
1
1
0
0
0
0
0
0
1
0
1
1
0
0
0
1
1
1
0
0
0
0x91
E2CTRLSTA User EEPROM read/write is disabled
0
0
0
0
0
0
0
0
Atmel LED Driver-MSL3162
19
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