DLPC3470 datasheet(64/70 Pages) TI1

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Vertical Back Porch (VBP)

Vertical Front Porch (VFP)

Horizontal

Back

Porch

(HBP)

Horizontal

Front

Porch

(HFP)

TLPF

TPPL

APPL

ALPF

DLPC3470

DLPS110 – APRIL 2018

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Device Support (continued)

NOTE

1. Engineering prototype samples are marked with an X suffix appended to the TI part

number. For example, 2512737-0001X.

2. See Table 2, for DLPC347x resolutions on the DMD supported per part number.

12.1.3 Video Timing Parameter Definitions

Active Lines Per Frame (ALPF) Defines the number of lines in a frame containing displayable data: ALPF is a

subset of the TLPF.

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 Number of blank pixel clocks after horizontal sync but before the first

active pixel. Note: HBP times are reference to the leading (active) edge of the respective sync

signal.

Horizontal Front Porch (HFP) Blanking Number of blank pixel clocks after the last active pixel but before

Horizontal Sync.

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

absolute reference point is defined by the active edge of the HS signal. 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) Defines the vertical period (or frame time) in lines: TLPF = Total number of lines

per frame (active and inactive).

Total Pixel Per Line (TPPL) Defines the horizontal line period in pixel clocks: TPPL = Total number of pixel

clocks per line (active and inactive).

Vertical Sync (VS) 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 Number of blank lines after the leading edge of vertical sync but before

the first active line.

Vertical Front Porch (VFP) Blanking Number of blank lines after the last active line but before the leading

edge of vertical sync.

Figure 38. Parameter Definitions

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