參數(shù)資料
型號(hào): LP5520
廠商: National Semiconductor Corporation
元件分類: LED驅(qū)動(dòng)器
英文描述: RGB Backlight LED Driver
中文描述: RGB背光LED驅(qū)動(dòng)器
文件頁數(shù): 27/34頁
文件大?。?/td> 790K
代理商: LP5520
LP5520 Registers, Control Bits and Default Values
All registers will have their default value after power-on or reset. Default value for correction registers is 1000 0000 (multiplier =
1). Default value for adaptive voltage control and fast PWM is on. Default value for current set registers is 55H which will set the
current to 20 mA. Default value for all other register bits is 0. Note, that in automatic compensation mode the LED currents are
obtained from the EEPROM.
Bits with
r/o
are read-only bits.
ADR
00H
REG NAME
rgb
control
current
control (R)
current
control (G)
current
control (B)
pwm
brightness
boost output
control
D7
seq_
mode[1]
cc_r[7]
D6
seq_
mode[0]
cc_r[6]
D5
D4
D3
D2
en_b
D1
en_g
D0
en_r
DEFAULT
0001 0000
en_fade
pwm_
fast
cc_r[4]
rgb_auto
01H
cc_r[5]
cc_r[3]
cc_r[2]
cc_r[1]
cc_r[0]
0101 0101
02H
cc_g[7]
cc_g[6]
cc_g[5]
cc_g[4]
cc_g[3]
cc_g[2]
cc_g[1]
cc_g[0]
0101 0101
03H
cc_b[7]
cc_b[6]
cc_b[5]
cc_b[4]
cc_b[3]
cc_b[2]
cc_b[1]
cc_b[0]
0101 0101
04H
brc_off
bri2
bri1
bri0
0000 0000
05H
06H
vprog[4]
comp_
sel
vprog[3]
en_
autoload
bit11
(r/o)
bit3
(r/o)
corr_r[3]
vprog[2]
vout_
auto
bit10
(r/o)
bit2
(r/o)
corr_r[2]
vprog[1]
en_boost
vprog[0]
nstby
0000 0000
0000 0100
adc_ch
08H
ADC_
hi_byte
ADC_
low_byte
R correction
G correction
B correction
EEPROM
Control
bit9
(r/o)
bit1
(r/o)
corr_r[1]
corr_g[1]
corr_b[1]
ee_page
[1]
bit8
(r/o)
bit0
(r/o)
corr_r[0]
corr_g[0]
corr_b[0]
ee_page
[0]
09H
bit7
(r/o)
corr_r[7]
corr_g[7]
corr_b[7]
ee_ready
(r/o)
bit6
(r/o)
corr_r[6]
corr_g[6]
corr_b[6]
ee_erase
bit5
(r/o)
corr_r[5]
corr_g[5] corr_g[4] corr_g[3] corr_g[2]
corr_b[5] corr_b[4] corr_b[3] corr_b[2]
ee_prog
ee_read
bit4
(r/o)
corr_r[4]
0AH
0BH
0CH
0DH
1000 0000
1000 0000
1000 0000
0000 0000
Register addresses from 40H to 5FH contain the EEPROM page. EEPROM access is described in the Calibration Memory chapter.
27
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