Altera Cyclone II DSP Development Board - Manual (Page 47)

Altera Corporation Reference Manual 2–39
August 2006 Cyclone II DSP Development Board
Cyclone II DSP Development Board Components
Synchronous SRAM Device (U22)
U22 is the synchronous SRAM (SSRAM), a Cypress Semiconductor
CY7C1360B-166 AC SSRAM device with a speed grade of 166 MHz on the
Cyclone II DSP development board. It is a 1 Mbyte pipelined
256 Kbit x 36-bit device in a 100-pin TQFP package.
1
The Cyclone II DSP development board only supports a 32-bit
interface due to pin-out constraints on the EP2C70F672.
1
Some of the SSRAM signal names were changed to facilitate
routing ease, reduce layer count, and improve signal integrity.
The method of addressing the SSRAM remains the same, but the
signal names from the EP2C70 have been changed and do not
necessarily match with the SSRAM chip signal names. For a
mapping of these signal names, see
Appendix B, SSRAM
Pin-Out Table .
Table 2–22 lists the SSRAM device reference.
Table 2–22. SSRAM Device Reference
Item Description
Board reference U22
Part number CY7C1360B-166AC
Device description 9 Mbit, 256 Kbit x 36-bit/512 Kbit x 18 pipelined
SSRAM
Manufacturer Cypress Semiconductors
Manufacturer web site www.cypress.com