Texas Instruments TMS320C64x DSP User Manual

Page 189

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Display T

iming

Examples

4-44

V

ideo Display Port

SPRU629

Figure 4–37. Y/C Progressive Display Horizontal Timing Example

ЙЙ

ЙЙ

ЙЙ

VCLKIN

FPCOUNT

IPCOUNT

VCTL1 (HBLNK)† §

VCTL1 (HSYNC)† §

VCLKOUT

VDOUT[9–0] §

VDOUT[19–0] §

FLCOUNT

n – 1

n + 1

n

EAV

Blanking Data

SAV

EAV

Blanking

Active Video

Display Image

4

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1280

One Line

Next Line

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7

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Def

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FF

.C

00.

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XY

.0

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0

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Def

Cb

Def

Cr

FF

.C

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.0

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.C

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.C

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Def

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Def

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Def

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Def

Cr

Def

Cb

Def

Y

Def

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Cb0

Cr

0

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.C

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.0

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.C

00.

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.0

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Cr630

Cb631

Cr631

Def

Cb

Def

Cr

Def

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Def

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Def

Cb

Def

Cr

00.

0

FRMWIDTH = 1650

IMGHOFF1 = 8

HSYNCSTART = 1350

HBLNKSTART = 1280

IMGHSIZE1 = 1264

HSYNCSTOP = 1430

HBLNKSTOP = 1646

IMGHOFF2 = n/a

IMGHSIZE2 = n/a

† Assumes VCT1P bit in VPCTL is set to 1 (active-low output). HSYNC output when VCTL1S bit in VDCTL is set to 00,

HBLNK output when VCTL1S bit is set 01.

‡ HBLNK operation when HBDLA bit in VDHBLNK is set to 1.
§ Diagram assumes a two VCLK pipeline delay between internal counters and output signals.

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