LTC3208 Datasheet, PDF (14/24 Pages) Linear Technology – High Current Software Confi gurable Multidisplay LED Controller

LTC3208
U
OPERATIO
Write Word Protocol Used By the LTC3208
1
7
11
8
1
8
11
S SLAVE ADDRESS WR A *SUB-ADDRESS A DATA BYTE A P**
S = Start Condition, Wr = Write Bit = 0, A = Acknowledge,
P = Stop Condition
*The sub-address uses only the first 3 bits, D0, D1 and D2.
**Stop can be delayed until all of the data registers have been written.
Sub-Address Byte
MSB
LSB
S7 S6 S5 S4 S3 S2 S1 S0
XXXXX000
XXXXX001
XXXXX010
XXXXX011
XXXXX100
XXXXX101
XXXXX110
XXXXX111
REGISTER
NONE
REGA
REGB
REGC
REGD
REGE
REGF
REGG
REGA, RED LED and GREEN LED 4-Bit DAC Data, Register Sub-Address = 001
MSB
A7
GRN D3
REGA2
A6
A5
GRN D2 GRN D1
LSB
A4
GRN D0
MSB
A3
RED D3
REGA1
A2
A1
RED D2 RED D1
LSB
A0
RED D0
REGB, BLUE LED and AUXILIARY 4-Bit DAC Data, Register Sub-Address = 010
MSB
B7
AUX D3
REGB2
B6
B5
AUX D2 AUX D1
LSB
B4
AUX D0
MSB
B3
BLUE D3
REGB1
B2
B1
BLUE D2 BLUE D1
LSB
B0
BLUE D0
REGC, MAIN LED 8-Bit DAC Data, Register Sub-Address = 011
MSB
C7
MAIN D7
C6
MAIN D6
C5
MAIN D5
C4
MAIN D4
C3
MAIN D3
C2
MAIN D2
C1
MAIN D1
LSB
C0
MAIN D0
REGD, SUB LED 8-Bit DAC Data, Register Sub-Address = 100
MSB
D7
SUB D7
D6
SUB D6
D5
SUB D5
D4
SUB D4
D3
SUB D3
D2
SUB D2
D1
SUB D1
LSB
D0
SUB D0
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