xilinx Synthesizable 200 MHz ZBT SRAM Interface.
The Virtex™ series and the Spartan™-II family of FPGAs provide access to a variety of on-chip
and off-chip RAM resources. In addition to the on-chip SelectRAM™ and Block SelectRAM+™,
a Virtex or Spartan-II design can interface to Megabytes of external high-speed SRAM and
DRAM. The combination of the high-speed SelectI/O resource and on-chip CLKDLL (Clock
Delay-Locked Loop) enables the interface to operate at maximum RAM speeds. A Virtex or
Spartan-II interface to ZBT (Zero Bus Turnaround) SRAM provides interleaved Read/Write
without wasteful turnaround cycles.
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