Full HD FIFO (First-In-First-Out) Memory
Nov 3, 2008
Applications HD video capturing and editing systems Switcher or format converter box Scan rate converters Time base correction (TBC) Frame synchronizer HD digital video camera buffering 1080p video stream data buffering Features 128 Mbit density configured as 8 M x 16 -bit input and output data bus width Supports video NTSC, PAL and HDTV up to 1080p resolutions Independent 16 -bit read/write data bus operations (different I/O data rates acceptable) High speed synchronous sequential access in maximum speed 1 50Mhz Input/Output enable control Supports double buffer mode (Upper and Lower frame access with 4M x16-bit in each frame) via frame-select pins Polarity Selectable 2.5V and 3.3V power supply Standard LQFP-128 package The AL460 consists of 128Mbit of memory density, and is configured as 8,192K x 1 6 bits FIFO (First-In-First-Out), the optimized access scheme offers maximum R/W operating speed up to 15 0 MHz. The FIFO provides simple and easy-to-use user interfaces facilitating usage in a wide range of applications, such as Multimedia systems, video capture systems , and various video data buffering applications. Ordering Information Part number AL460- PBF (150MHz) Package LQFP-128 Power +2.5/3.3V The extensive memory size and high data - access -speed allow v ideo frame capturing up to Full HD ( 1080p ) resolution. Complementing the Double Buffer mode, 2 banks serve as upper and lower banks (with 4,096k x 16-bit of each bank), AL460 can be further manipulated into more sophisticated applications. The R/W operations of corresponding banks are acknowledged while high/low signals present at the bank control pins. All AL460 FIFO specifics, like completely independent input and output controls, built-in address and pointer control circuits, bank switching and other management tasks provide data integrity during access and straightforward bus interface for a sequential data read/write that reduce inter-chip design efforts. The Double-Buffer mode allocates video data capture without reading a mixed old and new data frames. The polarity control seamlessly matches the controller waveform without additional glue-logic. The AL460 is also implemented with high performance process technologies with extended controller functions (write mask, read skip .. etc.); allowing easy operation of FIFO read/write for use in broadcasting systems, security systems, camera s, and many other applications. Designed and manufactured using state-of-the-art technologies, AL460 achieved high performance and low power consumption AC characteristics (2.5/3.3V power supply) , for the most sophisticated applications. The chip is available as an L QFP-128 package; the small footprint keeps real estate of any designs to a minimum.