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LP3954TLX/NOPB Datasheet(PDF) 44 Page - Texas Instruments

Part # LP3954TLX/NOPB
Description  Advanced Lighting Management Unit
PDF  58 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LP3954TLX/NOPB Datasheet(HTML) 44 Page - Texas Instruments

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LP3954
SNVS340D – JUNE 2005 – REVISED MARCH 2013
www.ti.com
Table 3. LP3954 Control Register Names and Default Values (continued)
ADDR
REGISTER
D7
D6
D5
D4
D3
D2
D1
D0
(HEX)
58
Command 5A
r[2:0]
g[2:0]
cet[3:2]
0
0
0
0
0
0
0
0
59
Command 5B
cet[1:0]
b[2:0]
tt[2:0]
0
0
0
0
0
0
0
0
5A
Command 6A
r[2:0]
g[2:0]
cet[3:2]
0
0
0
0
0
0
0
0
5B
Command 6B
cet[1:0]
b[2:0]
tt[2:0]
0
0
0
0
0
0
0
0
5C
Command 7A
r[2:0]
g[2:0]
cet[3:2]
0
0
0
0
0
0
0
0
5D
Command 7B
cet[1:0]
b[2:0]
tt[2:0]
0
0
0
0
0
0
0
0
5E
Command 8A
r[2:0]
g[2:0]
cet[3:2]
0
0
0
0
0
0
0
0
5F
Command 8B
cet[1:0]
b[2:0]
tt[2:0]
0
0
0
0
0
0
0
0
60
Reset
Writing any data to Reset Register resets LP3954
LP3954 Registers
REGISTER BIT EXPLANATIONS
Each register is shown with a key indicating the accessibility of the each individual bit, and the initial condition:
Register Bit Accessibility and Initial Condition
Key
Bit Accessibility
rw
Read/write
r
Read only
–0,–1
Condition after POR
RGB CTRL (00H) – RGB LEDS CONTROL REGISTER
D7
D6
D5
D4
D3
D2
D1
D0
cc_rgb1
cc_rgb2
r1sw
g1sw
b1sw
r2sw
g2sw
b2sw
rw-1
rw-1
rw-0
rw-0
rw-0
rw-0
rw-0
rw-0
0 - R1, G1 and B1 are constant current sinks, current limited internally
cc_rgb1
Bit 7
1 - R1, G1 and B1 are switches, limit current with external ballast resistor
0 – R2, G2 and B2 are constant current sinks, current limited internally
cc_rgb2
Bit 6
1 – R2, G2 and B2 are switches, limit current with external ballast resistor
0 – R1 disabled
r1sw
Bit 5
1 – R1 enabled
0 – G1 disabled
g1sw
Bit 4
1 – G1 enabled
Bit 3
0 – B1 disabled
b1sw
1 – B1 enabled
0 – R2 disabled
r2sw
Bit 2
1 – R2 enabled
0 – G2 disabled
g2sw
Bit 1
1 – G2 enabled
0 – B2 disabled
b2sw
Bit 0
1 – B2 enabled
44
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Product Folder Links: LP3954



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