Quad data rate SRAM supports 100-400 Gigabit line cards
14.00
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.
Cypress’s QDR-IV SRAM is capable of operating in burst-of-two or banked burst-of-two modes, which deliver the fastest clock speeds and highest RTR of all QDR SRAMs. The banked burst-of-two operating mode operates at a maximum frequency of 1,066 MHz with an RTR of 2,132 million transactions per second (MT/s), while the standard burst-of-two operating mode can achieve a maximum frequency of 667 MHz and an RTR of 1,334 MT/s. Both of these operating modes represent a significant improvement over the previous generation of QDR SRAM (450 MHz frequency, 900 MT/s RTR).
QDR-IV was developed in the QDR consortium, whose members jointly define SRAM standards to enable multiple sources and supply stability. The 144-Mbit CY7C41xxKV and 72-Mbit CY7C40xxKV QDR-IV SRAMs are shipping in production quantities now, available in a 361-ball Flip Chip Ball Grid Array (FCBGA) package.
Visit Cypress at www.cypress.com
Normal
0
false
false
false
EN-GB
X-NONE
X-NONE
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:”Table Normal”;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-parent:””;
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin-top:0cm;
mso-para-margin-right:0cm;
mso-para-margin-bottom:10.0pt;
mso-para-margin-left:0cm;
line-height:115%;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:”Calibri”,”sans-serif”;
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-fareast-language:EN-US;}
If you enjoyed this article, you will like the following ones: don't miss them by subscribing to :
