TLC5949PWPR datasheet(22/51 Pages) TI

22 / 51 page

TLC5949

SBVS219A – DECEMBER 2012 – REVISED DECEMBER 2012

www.ti.com

Enhanced Spectrum (ES) PWM Control

In this PWM control, the total display period is divided into 32 display segments. The total display period is the

time from the first GS clock (GSCLK) to the 4096th GSCLK input after the BLANK bit is set to '0'. Each display

segment has a maximum of 128 GSCLKs. The OUTn on-time changes, depending on the 12-bit GS data. Refer

to Table 4 for the sequence of information and to Figure 23 for the timing information.

Table 4. ES PWM Drive Turn-On Time Length

GS DATA

DECIMAL

HEX

OUTn DRIVER OPERATION

000h

Does not turn on

001h

Turns on for one GSCLK period in the first display segment

002h

Turns on for one GSCLK period in the first and 17th display segments

003h

Turns on for one GSCLK period in the first, 17th, and 9th display segments

004h

Turns on for one GSCLK period in the first, 17th, 9th, and 25th display segments

005h

Turns on for one GSCLK period in the first, 17th, 9th, 25th, and 5th display segments

006h

Turns on for one GSCLK period in the first, 17th, 9th, 25th, 5th, and 21th display segments

The number of display segments where OUTn is turned on for one GSCLK is incremented by

increasing GS data in the following order:

—

1 > 17 > 9 > 25 5 > 21 > 13 > 29 > 3 > 19 > 11 > 27 > 7 > 23 > 15 > 31 > 2 > 18 > 10 > 26 > 6 >

22 > 14 > 30 > 4 > 20 > 12 > 28 > 8 > 24 > 16 > 32.

Turns on for one GSCLK period in the first to 31st display segments, but does not turn on in the

01Fh

32nd display segment

020h

Turns on for one GSCLK period in all display segments (first to 32nd)

Turns on for two GSCLK periods in the first display period and for one GSCLK period in all other

021h

display periods

The number of display segments where OUTn is turned on for one GSCLK is incremented by

increasing GS data in the following order:

—

1 > 17 > 9 > 25 5 > 21 > 13 > 29 > 3 > 19 > 11 > 27 > 7 > 23 > 15 > 31 > 2 > 18 > 10 > 26 > 6 >

22 > 14 > 30 > 4 > 20 > 12 > 28 > 8 > 24 > 16 > 32.

Turns on for two GSCLK periods in the first to 31st display segments and turns on one GSCLK

03Fh

period in the 32nd display segment

040h

Turns on for two GSCLK periods in all display segments (first to 32nd)

Turns on for three GSCLK periods in the first display segment and for two GSCLK periods in all

041h

other display segments

The number of display segments where OUTn is turned on for one GSCLK is incremented by

increasing GS data in the following order:

—

1 > 17 > 9 > 25 5 > 21 > 13 > 29 > 3 > 19 > 11 > 27 > 7 > 23 > 15 > 31 > 2 > 18 > 10 > 26 > 6 >

22 > 14 > 30 > 4 > 20 > 12 > 28 > 8 > 24 > 16 > 32.

Turns on for 127 GSCLK periods in the first to 31st display segments, but only turns on for 126

4063

EDFh

GSCLK periods in the 32nd display segment

4064

FE0h

Turns on for 127 GSCLK periods in all display segments (first to 32nd)

Turns on for 128 GSCLK periods in the first display period and for 127 GSCLK periods in the

4065

FE1h

second to 32nd display segments

—

Turns on for 128 GSCLK periods in the first to 15th and 17th to 31st display segments; also turns

4094

FFEh

on for 127 GSCLK periods in the 16th and 32nd display segments.

Turns on for 128 GSCLK periods in the first to 31st display segments but only turns on for 127

4095

FFFh

GSCLK periods in the 32nd display segment

Submit Documentation Feedback

Product Folder Links: TLC5949

TLC5949PWPR Datasheet(PDF) 22 Page - Texas Instruments

TLC5949PWPR Datasheet(HTML) 22 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

Datasheet Download

Link URL