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Atmel LED Driver-MSL2162
16-string White and RGB LED Driver with
Adaptive Configuration, EEPROM, and SPI Bus
REGISTER NAME
AND ADDRESS
POWER- UP CONDITION
REGISTERS INITIALIZED FROM E2PROM
D7
D6
REGISTER DATA
D5 D4 D3 D2 D1 D0 HEX
0x28
0x29
0x2A
0x2B
0x2C
PHICNTR
PHIMUL
PHIMAX
Although disabled, internal PHI
frequency is set to 20MHz / (8 * (10416 + 1)) = 240Hz
PHI multiplier = 1 (register setting + 1)
Although disabled, PHI max count is zero
1
0
0
0
0
0
0
0
0
0
1
1
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
B0
28
00
00
00
PWM operation enabled
Individual LED string drive pulse widths internally determined
0x2D
PWMCTRL0
PWM input does not gate the output of the PWM engine
1
0
0
0
1
0
0
1
89
String on-times allowed to extend beyond end of PWM frame
String on-times not allowed to extend into frame zero
Alternate timing not used
Global intensity (GINT) disabled
Although disabled, (GINT + 1) is provided to the PWM engine
0x2E
PWMCTRL1
String drive phasing enabled
0
0
0
0
0
0
0
1
01
Delayed string turn-on beginning after PWM frame not allowed
Alternate timing not selected by PWM input state
0x2F
0x30
0x31
GINT
ALTGINT
ISTR
Although disabled, global intensity set to (127 + 1) / 256 = 50%
(1 added in numerator because bit D7 of 0x2D = 1)
Although disabled, Alternate global intensity set to (127 + 1) / 256 = 50%
(1 added in numerator because bit D7 of 0x2D = 1)
Strings current globally scaled to 50% of R Sn setting
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
7F
7F
7F
0x40
0x41
-
0x5E
0x5F
0x60
0x61
STR0SET
…
STR15SET
PWM0
All strings set to zero phase delay with strings assigned to FBO outputs
as follows:
FBO1: All Strings
FBO2: No Strings
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
…
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
00
40
00
40
00
02
-
…
All strings set with PWM t ON = 512 GSC cycles
…
0x7E
0x7F
0x80
0x81
PWM15
ALTSTR0SET
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
00
02
00
00
-
…
All strings set with alternate phase delay of zero
…
0x9E
0x9F
0xA0
0xA1
ALTSTR15SET
ALTPWM0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
00
00
00
02
-
…
All strings set with Alternate PWM t ON = 512 GSC cycles
…
0xBE
0xBF
ALTPWM15
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
00
02
REGISTERS WITH FIXED INITIAL VALUES
0xC0
0xC1
E2ADDR
E2CTRLSTA
E2PROM 7 bit address = 0x00
E2PROM read/write disabled
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
00
00
Atmel LED Driver-MSL2162
23
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