LP3933SL NSC [National Semiconductor], LP3933SL Datasheet - Page 17

• Manufacturer Part Number: LP3933SL
• Description: Lighting Management System for Six White LEDs and Two RGB or FLASH LEDs
• Manufacturer: NSC [National Semiconductor]

ADDR
0AH
0BH
0DH
2AH
2BH
2CH
2DH
2EH
2FH
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
Control Registers
Control registers and register bits are shown in the following table.
Default value of each register is 0000 0000 except boost output which is 0011 1111 = 3Fh (5V).
RGB Control register1
RGB Control register2
wled control reg
g1slope, g1duty
b1slope, b1duty
g2slope, g2duty
b2slope, b2duty
r1slope, r1duty
r2slope, r2duty
green1_on_off
green2_on_off
blue1_on_off
boost output
blue2_on_off
red1_on_off
red2_on_off
REGISTER
WLED1–4
CLED1–2
enables
g1slope[3] g1slope[2] g1slope[1] g1slope[0]
b1slope[3] b1slope[2] b1slope[1] b1slope[0]
g2slope[3] g2slope[2] g2slope[1] g2slope[0]
b2slope[3] b2slope[2] b2slope[1] b2slope[0]
r1slope[3]
r2slope[3]
rgb pwm
g1_on[3]
b1_on[3]
g2_on[3]
b2_on[3]
r1_on[3]
boost[7]
r2_on[3]
cycle[1]
wled[7]
cled[7]
D7
r1slope[2]
r2slope[2]
g1_on[2]
b1_on[2]
g2_on[2]
b2_on[2]
rgb start
r1_on[2]
r2_on[2]
boost[6]
cycle[0]
wled[6]
cled[6]
nstby
D6
r1slope[1]
r2slope[1]
en_boost
g1_on[1]
b1_on[1]
g2_on[1]
b2_on[1]
r1_on[1]
r2_on[1]
r1_pwm
boost[5]
wled[5]
cled[5]
rsw1
D5
17
r1slope[0]
r2slope[0]
en_flash1
g1_on[0]
b1_on[0]
g2_on[0]
b2_on[0]
g1_pwm
r1_on[0]
boost[4]
r2_on[0]
wled[4]
cled[4]
gsw1
D4
wled_pwm cled_pwm
en_flash2
g1duty[3]
b1duty[3]
g2duty[3]
b2duty[3]
g1_off[3]
b1_off[3]
r1duty[3]
b1_pwm
g2_off[3]
b2_off[3]
r2duty[3]
r1_off[3]
r2_off[3]
boost[3]
wled[3]
cled[3]
bsw1
D3
g1duty[2]
b1duty[2]
g2duty[2]
b2duty[2]
g1_off[2]
b1_off[2]
r1duty[2]
g2_off[2]
b2_off[2]
r2duty[2]
r1_off[2]
r2_off[2]
r2_pwm
boost[2]
wled[2]
cled[2]
rsw2
D2
g1duty[1] g1duty[0]
b1duty[1] b1duty[0]
g2duty[1] g2duty[0]
b2duty[1] b2duty[0]
r1duty[1]
r2duty[1]
g1_off[1]
b1_off[1]
g2_pwm
g2_off[1]
b2_off[1]
r1_off[1]
en_wled
r2_off[1]
boost[1]
wled[1]
cled[1]
gsw2
D1
www.national.com
g1_off[0]
b1_off[0]
r1duty[0]
g2_off[0]
b2_off[0]
r2duty[0]
b2_pwm
r1_off[0]
boost[0]
r2_off[0]
en_cled
wled[0]
cled[0]
bsw2
D0