LP8556 datasheet(41/63 Pages) TI1

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LP8556

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SNVS871I – JULY 2012 – REVISED MARCH 2016

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8.6.2.11 CFG5

Address A5h

CFG5 REGISTER

PWM_DIRECT

PS_MODE[2:0]

PWM_FREQ[3:0]

NAME

BIT

ACCESS

DESCRIPTION

PWM_DIRECT

R/W

Intended for certain test mode purposes. When enabled, the entire pipeline is

bypassed and PWM output is connected with PWM input.

PS_MODE

6:4

R/W

Select PWM output phase configuration:

000 = 6-phase, 6 drivers (0°, 60°, 120°, 180°, 240°, 320°)

001 = 5-phase, 5 drivers (0°, 72°, 144°, 216°, 288°, OFF)

010 = 4-phase, 4 drivers (0°, 90°, 180°, 270°, OFF, OFF)

011 = 3-phase, 3 drivers (0°, 120°, 240°, OFF, OFF, OFF)

100 = 2-phase, 2 drivers (0°, 180°, OFF, OFF, OFF, OFF)

101 = 3-phase, 6 drivers (0°, 0°, 120°, 120°, 240°, 240°)

110 = 2-phase, 6 drivers (0°, 0°, 0°, 180°, 180°, 180°)

111 = 1-phase, 6 drivers (0°, 0°, 0°, 0°, 0°, 0°)

PWM_FREQ

3:0

R/W

0h = 4,808 Hz (11-bit)

1h = 6,010 Hz (10-bit)

2h = 7,212 Hz (10-bit)

3h = 8,414 Hz (10-bit)

4h = 9,616 Hz (10-bit)

5h = 12,020 Hz (9-bit)

6h = 13,222 Hz (9-bit)

7h = 14,424 Hz (9-bit)

8h = 15,626 Hz (9-bit)

9h = 16,828 Hz (9-bit)

Ah = 18,030 Hz (9-bit)

Bh = 19,232 Hz (9-bit)

Ch = 24,040 Hz (8-bit)

Dh = 28,848 Hz (8-bit)

Eh = 33,656 Hz (8-bit)

Fh = 38,464 Hz(8-bit)

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