LP39542 Datasheet, PDF (46/58 Pages) National Semiconductor (TI) – Advanced Lighting Management Unit

EXT_PWM_CONTROL (07H) – EXTERNAL PWM CONTROL REGISTER
D7
D6
wled1_4_pwm wled5_6_pwm
rw-0
rw-0
D5
r1_pwm
rw-0
D4
g1_pwm
rw-0
D3
b1_pwm
rw-0
D2
r2_pwm
rw-0
D1
g2_pwm
rw-0
D0
b2_pwm
rw-0
wled1_4_pwm
wled5_6_pwm
r1_pwm
g1_pwm
b1_pwm
r2_pwm
g2_pwm
b2_pwm
Bit 7
0 – WLED1…WLED4 PWM control disabled
1 – WLED1…WLED4 PWM control enabled
Bit 6
0 – WLED5, WLED6 PWM control disabled
1 – WLED5, WLED6 PWM control enabled
Bit 5
0 – R1 PWM control disabled
1 – R1 PWM control enabled
Bit 4
0 – G1 PWM control disabled
1 – G1 PWM control enabled
Bit 3
0 – RB PWM control disabled
1 – B1 PWM control enabled
Bit 2 ^{0 – R2 PWM control disabled}
1 – R2 PWM control enabled
Bit 1
0 – G2 PWM control disabled
1 – G2 PWM control enabled
0 – B2 PWM control disabled
Bit 0 _{1 – B2 PWM control enabled}
WLED CONTROL (08H) – WLED CONTROL REGISTER
D7
D6
D5
D4
D3
slope_w5_6 slope_w1_4 en_fade_w5_6 en_fade_w1_4
r-0
rw-0
rw-0
rw-0
rw-0
D2
displ
rw-0
D1
en_w1_4
rw-0
D0
en_w5_6
rw-0
slope_w5_6
slope_w1_4
en_fade_w5_6
en_fade_w1_4
displ
en_w1_4
en_w5_6
Bit 6
0 – WLED5-6 full range fade execution time 1.3s
1 – WLED5-6 full range fade execution time 0.65s
Bit 5 ^{0 – WLED1-4 full range fade execution time 1.3s}
1 – WLED1-4 full range fade execution time 0.65s
Bit 4
0 – disable fade for WLED5-6
1 – enable fade for WLED5-6
0 – disable fade for WLED1-4
Bit 3 _{1 – enable fade for WLED1-4}
Bit 2
0 – WLED1-4 and WLED5-6 are controlled separately
1 – WLED1-4 and WLED5-6 are controlled with WLED1-4 controls
Bit 1
0 – WLED1-4 disabled
1 – WLED1-4 enabled
Bit 0
0 – WLED5-6 disabled
1 – WLED5-6 enabled
www.national.com
46