TLC5949 Datasheet, PDF(22/51 Page) Texas Instruments – 16-Channel, 12-Bit, ES-PWM, Full Self-Diagnosis LED Driver for 7-Bit Global BC LED Lamp

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TLC5949 Datasheet, PDF (22/51 Pages) Texas Instruments – 16-Channel, 12-Bit, ES-PWM, Full Self-Diagnosis LED Driver for 7-Bit Global BC LED Lamp

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TLC5949

SBVS219A â DECEMBER 2012 â 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.

GS DATA

DECIMAL

HEX

000h

001h

002h

003h

004h

005h

006h

01Fh

020h

021h

03Fh

040h

041h

4063

4064

4065

4094

4095

EDFh

FE0h

FE1h

FFEh

FFFh

Table 4. ES PWM Drive Turn-On Time Length

OUTn DRIVER OPERATION

Does not turn on

Turns on for one GSCLK period in the first display segment

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

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

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

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

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

32nd display segment

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

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

period in the 32nd display segment

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

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

GSCLK periods in the 32nd display segment

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

second to 32nd display segments

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

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

GSCLK periods in the 32nd display segment

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