Xilinx Understanding BPI Flash Connections in the SP601 Evaluation Board Manual

Chapter 1: SP601 Evaluation Board

Figure 1-8provides the UCF constraints for the SPI serial flash PROM.

NET "FPGA_D2_MISO3"	LOC = "V14";
NET "SPI_CS_B"	LOC = "V3";
NET "FPGA_D0_DIN_MISO_MISO1"	LOC = "R13";
NET "FPGA_D1_MISO2"	LOC = "T14";
NET "FPGA_MOSI_CSI_B_MISO0"	LOC = "T13";
NET "FPGA_CCLK"	LOC = "R15";

Figure 1-8:UCF Location Constraints for BPI Flash Connections

References

See the Winbond Serial Flash specifications for more information at http://www.winbond-

usa.com/hq/enu/ProductAndSales/ProductLines/FlashMemory/SerialFlash/W25X64.htm.

See the XPS Serial Peripheral Interface specification for more information at http://www.xilinx.com/support/documentation/ip_documentation/xps_spi.pdf.

4. Linear Flash BPI

An 8-bit (16 MB) Numonyx linear flash memory (TE 28F128J3D-75) (J3D type) is used to provide non-volatile bitstream, code, and data storage. The J3D devices operate at 3.0V; the Spartan-6 FPGA I/Os are 3.3V tolerant and provide electrically compatible logic levels to directly access the linear flash BPI through a 2.5V bank. For details on configuring the FPGA, see “Configuration Options.”

U1 U10

FPGA

BPI FLASH INTERFACE

ADDR, DATA, CTRL

NUMONYX TYPE J3vD

T28F128J3D-75

UG518_09_070809

Figure 1-9:Linear Flash BPI Interface

Table 1-7:BPI Memory Connections

FPGA U1 Pin	Schematic Netname	BPI Memory U10
		Pin Number	Pin
K18	FLASH_A0	32	A0
K17	FLASH_A1	28	A1
J18	FLASH_A2	27	A2
J16	FLASH_A3	26	A3
G18	FLASH_A4	25	A4
G16	FLASH_A5	24	A5

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		UG518 (v1.1) August 19, 2009