LP3958 Datasheet, PDF (26/28 Pages) National Semiconductor (TI) – Lighting Management Unit with High Voltage Boost Converter

LP3958 Register Bit Explanations (Continued)
MAIN CURRENT (04H) – MAIN CURRENT CONTROL REGISTER
D7
RW - 0
D6
RW - 0
D5
RW - 0
D4
D3
MAIN[7:0]
RW - 0
RW - 0
SUB CURRENT (05H) – SUB CURRENT CONTROL REGISTER
D7
RW - 0
D6
RW - 0
D5
RW - 0
D4
D3
SUB[7:0]
RW - 0
RW - 0
D2
RW - 0
D2
RW - 0
D1
RW - 0
D1
RW - 0
MAIN, SUB current adjustment
MAIN[7:0],
Typical driver current (mA)
SUB[7:0]
0000 0000
0
0000 0001
0.1
0000 0010
0.2
0000 0011
0.3
0000 0100
0.4
…
…
1111 1101
25.3
1111 1110
25.4
1111 1111
25.5
GPIO CONTROL (06H) – GPIO CONTROL REGISTER
D7
R-0
D6
R-0
D5
R-0
D4
EN_PWM_PIN
RW - 0
D3
R-0
D2
RW - 0
D1
OEN[2:0]
RW - 0
EN_PWM_PIN
OEN[2:0]
Bit 4
Bits 2-0
0 – External PWM pin disabled
1 – External PWM pin enabled
0 – GPIO pin set as a input
1 – GPIO pin set as a output
GPIO DATA (07H) – GPIO DATA REGISTER
D7
D6
D5
D4
D3
D2
R-0
R-0
R-0
R-0
R-0
RW - 0
D1
DATA[2:0]
RW - 0
DATA[2:0] Bits 2-0 GPIO data register bits
D0
RW - 0
D0
RW - 0
D0
RW - 0
D0
RW - 0
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