LTC3208 Datasheet, PDF (15/24 Pages) Linear Technology – High Current Software Confi gurable Multidisplay LED Controller

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OPERATIO
LTC3208
REGE, AUXILIARY LED 8-Bit MUX Data, Selects DAC for Each AUX Output, Register Sub-Address = 101
AUX4
E7 E6 SELECT
00
AUX
01
MAIN
10
SUB
11
CAM
AUX3
AUX2
E5 E4 SELECT E3 E2 SELECT
00
AUX 0 0
AUX
01
MAIN 0 1
MAIN
10
SUB 1 0
SUB
11
CAM 1 1
CAM
AUX1
E1 E0 SELECT
00
AUX
01
MAIN
10
SUB
11
CAM
REGF, CAMERA LED 4-Bit High and 4-Bit Low DAC Data, Register Sub-Address = 110
MSB
F7
CAM D3
HIGH BITS
F6
F5
CAM D2 CAM D1
LSB
F4
CAM D0
MSB
F3
CAM D3
LOW BITS
F2
F1
CAM D2 CAM D1
LSB
F0
CAM D0
REGG, Options Byte, Sub-Address = 111
MSB
G7
G6
G5
G4
Force2x Force1p5
D_TH2
D_TH1
G3
X_RGBDROP
G2
S_CAMHILO
G1
S_ELRGBS
LSB
G0
Not Used
S_ELRGBS (G1)
1
0
S_CAMHILO (G2)
1
0
X_RGBDROP (G3)
1
0
D_TH1 (G4)
0
D_TH2 (G5)
0
Force1p5 (G6) 1
0
Force2x (G7)
1
0
Selects SUB displays for control by the ENRGBS pin
Selects RGB displays for control by the ENRGBS pin
Selects CAM high register, disables CAMHL pin
Selects CAM low register, enables CAMHL pin
Disables RGB and AUX4 dropout signals when outputs used as logic signals
Enables RGB and AUX4 dropout signals
Test hook, must always be 0
Test hook, must always be 0
Forces charge pump into 1.5x mode
Enables mode logic to control mode changes based on dropout signal
Forces charge pump into 2x mode, overrides Force1p5 signal
Enables mode logic to control mode changes based on dropout signal
3208fa
15