General Description

AL700/701/710 is a 4 channel QUAD-screen video controller that can accept digital video input

sources, provides 2 analog output ports (not for AL701), 2 digital output ports, and memory direct

access mode allowing images to be uploaded onto a PC. AL700/701/710 not only supports 4

channel 8-bit ITU-R-656 4:2:2 interface inputs, dual 8/16-bit digital outputs for successive process

and dual analog (TV encoder embedded, not for AL701) video outputs for TV, Camcorder, VCR,

etc

特性 Features

! Accepts NTSC, PAL and SECAM video formats

! Supports 4 independent 656/601 8-bit video inputs

! Supports multiplexing function for 2 channels using one decoder

! Provides 2 independent 656/601 8/16-bit digital outputs

! Provides 2 independent S-video/Composite analog video outputs (no need external encoders,

not for AL701)

! Picture location selectable

! Supports PIP (Picture-In-Picture) function

! Supports programmable picture overlay and layer priority

! Displays picture at arbitrary channels of 1,2,3 and 4

! Provides channel switching without rolling

! Freeze individual channel

! Provides video loss detection and motion detection

! 2X zoom with vertical and horizontal interpolation

! Provides embedded OSD (On Screen Display) and supports external OSD function

! Supports BMP image overlay and Non-fixed font display

! Provides fading effects for OSD overlay

! Supports various types of video decoder and 1Mx16 or 4Mx16 SDRAM

! Supports registers programming via I2C serial or proprietary parallel interface

! Supports uploading image data onto PC

! Provides horizontal image mirroring

! Available in 208-pin 28*28mm PQFP

! Note: AL710 only supports Black & White video mode