CurrentData

SOUT

(CommonShiftRegisterBit24)

R0B

On

G0B

On

B7B

On

LOD

B7B

LOD

G0B

LOD

R0B

High

23

Cont

0

Cont

LOD

G7B

23

Cont

LOD

R0B

1

Cont

TEF

B

LOD

R0A

23

Cont

High

B7B

On

Low

0A

On

Low

LOD

B7B

TEF

A

SCLK

SIN

OUTR0

ON

OFF

1

2

3

4

5

6

LAT

On/OffDataLatch

(Internal)

BLANK

ON

OFF

ON

OFF

ON

OFF

23

24

25

G7B

On

R7B

On

B6B

On

R0B

On

G0B

On

B0B

On

R6B

On

22

Cont

21

Cont

0

Cont

LOD

G7A

LOD

R7A

LOD

B6A

LOD

G6A

LOD

R6A

LOD

G0A

LOD

G7B

LOD

R7B

LOD

G0B

LOD

R0B

LOD

B7A

1

2

3

23

24

25

PreviousData

CurrentData

1

Cont

(V

)

OUTRn/Gn/BnH

(V

)

OUTRn/Gn/BnL

ControlDataLatch

(Internal)

PreviousData

OUTG0

OUTB0

OUTR1

OUTR7

ON

OFF

ON

OFF

ON

OFF

OUTG7

OUTB7

CommonShiftRegister

Bit0(Internal)

23

Cont

High

B7B

On

Low

G7B

On

R7B

On

B6B

On

G0B

On

B0B

On

22

Cont

2

Cont

CommonShiftRegister

Bit1(Internal)

High

Low

B7B

On

G7B

On

R7B

On

B0B

On

R1B

On

3

Cont

1

Cont

2

Cont

CommonShiftRegister

Bit23(Internal)

Low

LOD

R0A

LOD

G7A

LOD

R7A

LOD

B6A

LOD

G6A

LOD

B7A

LOD

R6A

LOD

R0A

LOD

G0A

LOD

R7B

LOD

B6B

LOD

G0B

LOD

R0B

OutputOn/OffDataWrite

ControlDataWrite

G6B

On

G6B

On

B6B

On

LOD

B5A

Outputcurrent

ischanged

byBCdata.

2

Cont

SIDdataarecopiedtothe25-bit

commonshiftregisteratthe

risingedgeofLAT.

TheLOD/LSDresultofeachLEDcomesfromSOUT.

Thedatainthecommonshiftregisterarecopied

totheon/offdatalatchattherisingedgeofLAT.

Thedatainthecommonshiftregisterarecopied

tothecontroldatalatchattherisingedgeofLAT.

REDoutputsareturnedoffbytheoutputon/offdata.

TLC5952

Figure 34 shows the operation to write data into the common shift register and control data latch.

Figure 34. Data Write Operation

Copyright © 2009, Texas Instruments Incorporated

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