LED171596ARSLR datasheet(32/153 Pages) TI1

32 / 153 page

LED171596A

SNVSAY2 – OCTOBER 2017

www.ti.com

Submit Documentation Feedback

7.6.1.1 CONFIG_PWM Register (Address = 0h) [reset = 1Fh]

CONFIG_PWM is shown in Figure 26 and described in Table 8.

Return to Summary Table.

Figure 26. CONFIG_PWM Register

RESERVED

pwm_input_edg

e_sel

pwm_input_hys

teresis

R/W-0h

pwm_input_hysteresis

enable_pwm_d

etector

pwm_freq_sel

pwm_phase_shift_config

RESERVED

R/W-0h

R/W-1h

R/W-3h

Table 8. CONFIG_PWM Register Field Descriptions

Bit

Field

Type

Reset

Description

15-10

RESERVED

R/W

pwm_input_edge_sel

R/W

PWM period is measured:

0 - from rising edge to rising edge

1 - from falling edge to falling edge

8-6

pwm_input_hysteresis

R/W

PWM hysteresis selection sets the minimum allowable change to the

input.

Hysteresis is monitoring direction of change and if direction is

changing then hysteresis will apply.

If a smaller change is detected to opposite direction, it is ignored.

With hysteresis the constant changing between two brightness

values is avoided if there is small jitter in the input signal.

Hysteresis is selected with pwm_input_hysteresis bits in register

CONFIG_PWM.

Hysteresis is calculated from pwm detector 16-bit output value.

Using a higher hysteresis setting is recommended with high PWM

input frequencies.;

Hysteresis (decimal), calculated from 16 bit value

000 - off

001 - 15

010 - 31

011 - 63

100 - 127

101 - 255

110 - 511

111 - 1023

enable_pwm_detector

R/W

PWM input detector enable

pwm_freq_sel

R/W

PWM Frequency selector:

0 - 20 kHz

1 - 10 kHz

3-2

pwm_phase_shift_config

R/W

PWM phaseshifting

00 - off

01 - 1 clock cycles

10 - 2 clock cycles

11 - 3 clock cycles

1-0

RESERVED

R/W

NOTE: When updating other fields in this register the 2 lsb reset

value must be preserved!

LED171596ARSLR Datasheet(PDF) 32 Page - Texas Instruments

LED171596ARSLR Datasheet(HTML) 32 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL