參數(shù)資料
型號: THS8200PFPG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP80
封裝: GREEN, PLASTIC, HTQFP-80
文件頁數(shù): 30/101頁
文件大?。?/td> 806K
代理商: THS8200PFPG4
4–19
4.7.2.4 Output Synchronization: Hsync/Vsync Outputs
These are the HS_OUT and VS_OUT signals, of which the width, position and polarity are programmable in all DTG
modes.
4.7.3
DTG Line Type Overview
4.7.3.1 HDTV Mode
When an HDTV mode is selected in dtg1_mode (preset or generic), a tri-level sync is inserted on the analog output
at the start of every video line. The amplitudes during negative and positive excursions are programmable, as well
as the horizontal timing parameters (width, position) of both excursions.
The transition time for negative-to-blank and blank-to-positive excursions during VBI is fixed to 2T, generating a
tri-level sync negative-to-positive excursion of 4T. The line type is programmed in registers dtg2_linetype<n> and is
output by the DTG from the vertical field/frame position corresponding to the line number programmed in register
dtg2_breakpoint<n>, until the line number listed in the next breakpoint register is reached. An example for 1080I is
shown in Figure 4–25.
The DTG overrides the input video data except where specified below for the specific line types.
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