AL710 Просмотр технического описания (PDF) - AverLogic Technologies Inc

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Компоненты Описание

производитель

AL710

QUAD Video Processor

AverLogic Technologies Inc 

IN PUT

CLO CK R eferenc e start (0)

H S YN C

VAL_0(HDE)

In put

H S YNC

Start

Horizo ntal

Capture Start

(R eg # 09h,0Ah )

AL700/701/710

IN PUT

AC TIVE

R E G IO N

Figure 1: Input Video Timing

7.2 Encoder Video Output Interface

All the AL700, AL701 and AL710 provide two digital video output interfaces that can be

directly connected external TV encoders for composite output or AL250/251 devices for

RGB analog/digital output. But only AL700 and AL710 provide internal encoders to support

two analog composite outputs that can be simultaneously connected to TV and VCR. Both

8-bit ITU-R-601 4:2:2 and ITU-R-656 4:2:2 interface are supported when external encoder

mode is selected. The monitor output interface also supports 16-bit ITU-R-601 4:2:2 data

stream.

For AL700/710, the digital output data is still available when internal encoder mode is

selected, but the horizontal size of picture is non-standard because the internal operating

clock for the output is 14.318 MHz in NTSC or 17.734 MHz in PAL, not the CCIR standard

of 13.5 MHz.

©2001,2002-Copyright by AverLogic Technologies, Corp. Preliminary Version C1.1 13

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