20
www.xilinx.com
SP601 Hardware User Guide
UG518 (v1.1) August 19, 2009
Chapter 1:
SP601 Evaluation Board
Figure 1-8
provides the UCF constraints for the SPI serial flash PROM.
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.”
X-Ref Target - Figure 1-8
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
X-Ref Target - Figure 1-9
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
U1
U10
FPGA
BPI FLA
S
H
INTERFACE
NUMONYX TYPE J3vD
T2
8
F12
8
J3D-75
ADDR, DATA, CTRL
UG51
8
_09_070
8
09