Xilinx MIcroBlaze Development Spartan-3E 1600E Kit User Manual page 93

R
SPI Serial Flash
The MicroBlaze Development Kit board includes a STMicroelectronics M25P16 16 Mbit
SPI serial Flash, useful in a variety of applications. The SPI Flash provides an alternative
means to configure the FPGA—a new feature of Spartan-3E FPGAs as shown in
Figure
purposes, such as:
Figure 12-1: Spartan-3E FPGAs Have an Optional SPI Flash Configuration Interface
Table 12-1: SPI Flash Interface Signals
MicroBlaze Development Kit Spartan-3E 1600 Edition User Guide
UG257 (v1.1) December 5, 2007
12-1. The SPI Flash is also available to the FPGA after configuration for a variety of
Simple non-volatile data storage
Storage for identifier codes, serial numbers, IP addresses, etc.
Storage of MicroBlaze processor code that can be shadowed into DDR SDRAM.
Spartan-3E FPGA
MOSI/CSI_B
DIN/D0
CSO_B
Signal FPGA Pin
SPI_MOSI T4 FPGA SPI
SPI_MISO N10 FPGA SPI
SPI_SCK U16 FPGA SPI
SPI_SS_B U3 FPGA SPI
SPI_MOSI
(T4)
SPI_MISO
(N10)
SPI_SCK
CCLK (U16)
SPI_SS_B
(U3)
Direction
Serial data: Master Output, Slave Input
Serial data: Master Input, Slave Output
Clock
Asynchronous, active-Low slave select input
Chapter 12
SPI Serial Flash
STMicro M25P16
D
Q
C
S
UG257_12_01_060706
Description
www.xilinx.com
91