LP3954 Datasheet, PDF (48/60 Pages) National Semiconductor (TI) – Advanced Lighting Management Unit

LP3954
SNVS340D – JUNE 2005 – REVISED MARCH 2013
hc[1:0]
en_hcflash
Bits 2-1
Bit 0
Current control for high current flash driver
hc[1:0]
current
00
01
10
11
0 – high current flash driver disabled
1 – high current flash driver enabled
0.25×I_MAX(FLASH)
0.50×I_MAX(FLASH)
0.75×I_MAX(FLASH)
1.00×I_MAX(FLASH)
PATTERN_GEN_CTRL (11H) – PATTERN GENERATOR CONTROL REGISTER
D7
D6
D5
D4
D3
D2
D1
rgb_start
loop
r-0
r-0
r-0
r-0
r-0
rw-0
rw-0
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D0
log
rw-0
rgb_start
loop
log
Bit 2
Bit 1
Bit 0
0 – Pattern generator disabled
1 – execution pattern starting from command 1
0 – pattern generator loop disabled (single patter)
1 – pattern generator loop enabled (execute until stopped)
0 – color intensity mode 0
1 – color intensity mode 1
RGB1_MAX_CURRENT (12H) – RGB1 DRIVER INDIVIDUAL MAXIMUM CURRENT CONTROL REGISTER
D7
D6
D5
D4
D3
D2
D1
D0
ir1[1:0]
ig1[1:0]
ib1[1:0]
r-0
r-0
rw-0
rw-0
rw-0
rw-0
rw-0
rw-0
ir1[1:0]
Bits 5-4
ig1[1:0]
Bits 3-2
ib1[1:0]
Bits 1-0
ir1[2:0]
00
01
10
11
ig2[1:0]
00
01
10
11
ib1[1:0]
00
01
10
11
Maximum current for R1 driver
Maximum output current
0.25×I_MAX
0.50×I_MAX
0.75×I_MAX
1.00×I_MAX
1aximum current for G1 driver
Maximum output current
0.25×I_MAX
0.50×I_MAX
0.75×I_MAX
1.00×I_MAX
Maximum current for B1 driver
Maximum output current
0.25×I_MAX
0.50×I_MAX
0.75×I_MAX
1.00×I_MAX
RGB2_MAX_CURRENT (13H) – RGB2 DRIVER INDIVIDUAL MAXIMUM CURRENT CONTROL REGISTER
D7
D6
D5
D4
D3
D2
D1
D0
ir2[1:0]
ig2[1:0]
ib2[1:0]
rw-0
rw-0
rw-0
rw-0
rw-0
rw-0
rw-0
rw-0
48
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