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The AL4CX263/AL4CX273/AL4CX283/AL4CX293 FIFO (First In First Out) memory provides completely independent 18bit bus width input and output port operation with flexible x18/ x9 Bus-Matching data flow control at a maximum speed of 166 Mhz. The products are available in densities from 128Kbit to 1Mbit. Additional features of the AL4CX2x3 series include: fixed and programmable flags; low first word latency;partial reset; Endian select; expandable depth/width.
The embedded memory array with built-in address decoder, pointer manager and stateof-the-art circuits provide an easy-to-use interface to serial read/write memory and offer a flexible way to manage memory in the system design.
AL4CX293 Features
· 8,192 x 18/16, 384 x 9-bit (AL4CX263) · 16,384 x 18/32, 768 x 9-bit (AL4CX273) · 32,768 x 18/65, 536 x 9-bit (AL4CX283) · 65,536 x 18/131, 072 x 9-bit (AL4CX293) · Maximum 166 MHz Operation · 6 ns read/write cycle time · Independent Read and Write operations Standard or First Word Fall Through mode · Bus-Matching and Endian selection · Empty, Full, Half-Full and Programmable Almost-Empty, Almost-Full Flags · Depth and width expandable · Output enable (data skipping) · Master Reset clears entire FIFO · Partial Reset, clears data · Zero Latency Retransmit · 3.3V power supply with 5V tolerant inputs · Available in a 80-pin thin quad flat pack (TQFP)
AL4CX293 Typical Application
- ATM switches - Routers - Cable modems - Wireless base stations - SONET(Synchronous Optical Network) multiplexers - Multimedia systems - TBC(Time Base Corrector) - Hard Disk cache memory - Buffer for Communications