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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 Map and the E 2 PROM
Register Map Summary
Control the MSL3163/4 using the 96 registers in the range 0x00 thru 0x5F (Table 2). It may be convenient, and it is
allowed, to read and write to unused bits in this range when accessing registers, but always write zeros. Reads from
unused bits always return zeros. Three additional registers, 0x90, 0x91 and 0x93 allow access to the E 2 PROM and
provide Efficiency Optimizer status. The power-up default values for all control registers are stored within the on-chip
E2PROM, and any of these E2PROM values may be changed through the serial interface.
Table 2. Atmel LED Drivers-MSL3163/4 Register Map
ADDRESS AND
REGISTER NAME
FUNCTION
D7
D6
D5
REGISTER DATA
D4 D3
D2
D1
D0
0x00
0x01
CONTROL0
CONTROL1
LED string
enables
STR7EN STR6EN
STR15EN STR14EN
STR5EN
STR13EN
STR4EN
STR12EN
STR3EN
STR11EN
STR2EN
STR10EN
STR1EN
STR9EN
STR0EN
STR8EN
0x02
POWERCTRL
Fault
configuration
SLEEP
I 2 CTOEN PHIMINFEN GSCMAXFEN STRSCFEN STROCFEN FBOOCEN
FBOEN
0x03
FLTSTATUS
Fault status,
global
-
-
PHIMINFLT GSCMAXFLT
STRSCDET STROCDET
FBOOC
FLTDET
0x04
0x05
0x06
0x07
OCSTAT0
OCSTAT1
SCSTAT0
SCSTAT1
String open
circuit fault
status
String short
circuit fault
status
OC7
OC15
SC7
SC15
OC6
OC14
SC6
SC14
OC5
OC13
SC5
SC13
OC4
OC12
SC4
SC12
OC3
OC11
SC3
SC11
OC2
OC10
SC2
SC10
OC1
OC9
SC1
SC9
OC0
OC8
SC0
SC8
0x08
0x09
FLTMASK0
FLTMASK1
String fault
masks
FLTEN7 FLTEN6
FLTEN15 FLTEN14
FLTEN5
FLTEN13
FLTEN4
FLTEN12
FLTEN3
FLTEN11
FLTEN2
FLTEN10
FLTEN1
FLTEN9
FLTEN0
FLTEN8
0x0A
0x0B
FBOCTRL0
FBOCTRL1
Efficiency
Optimizer control
HDRMSTEP[1:0]
SCCDLY[1:0]
FBCLDLY[1:0]
DECRSTEP[1:0]
FBSDLY[1:0]
INITPWM ACAL10 0
FBCFDLY[1:0]
ACALEN ICHKDIS
0x0C
0x0D
0x0E
0x0F
FBODAC1
FBODAC2
FBODAC3
ISTR
Efficiency
Optimizer DAC
readback
8-bit global
string current
FBODAC1[7:0]
FBODAC2[7:0]
FBODAC3[7:0]
ISTR[7:0]
0x10
OSCCTRL
Oscillator
frequency
-
-
-
-
-
OSCTRL[2:0]
0x11
GSCCTRL
GSC processing GSCCHK-
control SEL
-
-
-
GSCMAXEN
GSCPOL
GSCPHI-
SYNCEN
GSCINTEN
0x12
0x13
GSCGEN
Internal GSC
clock generator
GSCGEN[7:0]
GSCGEN[15:8]
0x14
GSCMUL
GSC multiplier
-
-
-
GSCMUL[4:0]
0x15
GSCDIV
GSC divider
-
-
-
-
GSCDIV[3:0]
0x16
0x17
GSCMAX
Max oscillator
cycles between
GSC pulses
GSCMAX[7:0]
GSCMAX[15:8]
0x18
PHICTRL
PHI processing
control
-
-
-
-
-
PHIMINEN
PHIPOL
PHIINTEN
0x19
0x1A
PHIGEN
Internal PHI
clock generator
PHIGEN[7:0]
PHIGEN[15:8]
Atmel LED Drivers-MSL3163/MSL3164
17
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