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Altera's Quartus II software supports Cypress SRAMs

20 Feb 2015

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Cypress Semiconductor announced that the latest Quartus II software v14.1 from Altera now supports the QDR-IV, Cypress's static random access memory and Arria 10, Altera's field-programmable gate arrays (FPGAs). The release supports simulation, compilation and timing for designs with the QDR-IV SRAM. It also enables customers to design in the QDR-IV SRAM at its fastest clock speeds and achieve the high Random Transaction Rate (RTR) required to achieve 100-400 Gigabit line card rates.

RTR, the number of fully random memory accesses per second, is the critical memory performance metric for increased line card and switching rates. The bottleneck for reaching increased line card rates is the processing of look-up tables, statistics and state counters stored in memory, as well as scheduling functions. QDR-IV devices deliver the RTR required to support these functions, enabling high bandwidth and high-quality video streams. Cypress's QDR-IV static random access memory (SRAM) is capable of operating in burst-of-two (High Performance) or banked burst-of-two (Xtreme Performance) modes, delivering the fastest clock speeds and highest RTR of all QDR SRAMs.

Using Altera's Quartus II software v14.1, the banked burst-of-two mode can be operated at a maximum frequency of 1,066MHz with an RTR of 2,132 million transactions per second (MT/s), while the standard burst-of-two mode can be operated at a maximum frequency of 667MHz and an RTR of 1,334MT/s.

Cypress offers QDR-IV SRAMs in 144Mbit and 72Mbit densities. The 144Mbit CY7C41xxKV and 72Mbit CY7C40xxKV QDR-IV SRAMs are shipping in production quantities today and are available in a 361-ball Flip Chip Ball Grid Array (FCBGA) package.

QDR-IV was developed in the QDR consortium, whose members jointly define SRAM standards to enable multiple sources and supply stability.

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