DLPA2000 datasheet(59/63 Pages) TI

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Active Pixels Per Line

(APPL)

Defines the number of pixel clocks in a line containing displayable data. APPL is a

subset of the TPPL.

Horizontal Back Porch

(HBP) Blanking

Defines the number of blank pixel clocks after the active edge of horizontal sync but

before the first active pixel.

Horizontal Front Porch

(HFP) Blanking

Defines the number of blank pixel clocks after the last active pixel but before

horizontal sync.

Horizontal Sync (HS or

Hsync)

Timing reference point that defines the start of each horizontal interval (line). The

active edge of the HS signal defines the absolute reference point. The active edge

(either rising or falling edge as defined by the source) is the reference from which all

horizontal blanking parameters are measured.

Total Lines Per Frame

(TLPF)

Total number of active and inactive lines per frame; defines the vertical period (or

frame time).

Total

Pixel

Per

Line

(TPPL)

Total number of active and inactive pixel clocks per line; defines the horizontal line

period in pixel clocks.

Vertical Sync (VS or

Vsync)

Timing reference point that defines the start of the vertical interval (frame). The

absolute reference point is defined by the active edge of the VS signal. The active

edge (either rising or falling edge as defined by the source) is the reference from

which all vertical blanking parameters are measured.

Vertical

Back

Porch

(VBP) Blanking

Defines the number of blank lines after the active edge of vertical sync but before

the first active line.

Vertical

Front

Porch

(VFP) Blanking

Defines the number of blank lines after the last active line but before the active edge

of vertical sync.

Vertical Back Porch (VBP)

Vertical Front Porch (VFP)

Horizontal

Back

Porch

(HBP)

Horizontal

Front

Porch

(HFP)

TLPF

TPPL

APPL

ALPF

Figure 11-1. Parameter Definitions

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