IDT72520

Integrated Device Technology, Inc. BUS-MATCHING BIDIRECTIONAL FIFO 512 x 18-BIT – 1024 x 9-BIT 1024 x 18-BIT – 2048 x 9-BIT DESCRIPTION: IDT72510 IDT72520 FEATURES: Two side-by-side FIFO memory arrays for bidirectional data transfers 512 x 18-Bit – 1024 x 9-Bit (IDT72510) 1024 x 18-Bit – 2048 x 9-Bit (IDT72520) 18-bit data bus on Port A side and 9-bit data bus on Port B side Can be configured for 18-to-9-bit, 36-to-9-bit, or 36-to-18bit communication Fast 25ns access time Fully programmable standard microprocessor interface Built-in bypass path for direct data transfer between two ports Two fixed flags, Empty and Full, for both the A-to-B and the B-to-A FIFO Two programmable flags, Almost-Empty and Almost-Full for each FIFO Programmable flag offset can be set to any depth in the FIFO Any of the eight internal flags can be assigned to four external flag pins Flexible reread/rewrite capabilities. On-chip parity checking and generation Standard DMA control pins for data exchange with peripherals IDT72510 and IDT72520 available in the the 52-pin PLCC package The IDT72510 and IDT72520 are highly integrated firstin, first-out memories that enhance processor-to-processor and processor-to-peripheral communications. IDT BiFIFOs integrate two side-by-side memory arrays for data transfers in two directions. The BiFIFOs have two ports, A and B, that both have standard microprocessor interfaces. All BiFIFO operations are controlled from the 18-bit wide ...