Configuration Mode Jumpers - Xilinx Spartan-3A User Manual

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Configuration Mode Jumpers

As shown in
mode. Inserting a jumper grounds the associated mode pin. Insert or remove individual
jumpers to select the FPGA's configuration mode and associated configuration memory
source. The J26 jumper block is shown in
Table 4-1: Configuration Mode Jumper Settings
Mode Pins
Configuration Mode M2:M1:M0
Internal Master SPI
Master Serial
Master SPI
(see Chapter 12,
"SPI Serial Flash")
Master BPI Up
(see Chapter 11,
"Parallel NOR Flash
PROM")
JTAG
Spartan-3A/3AN Starter Kit Board User Guide
UG334 (v1.0) May 28, 2007
Table 4-1, the J26 jumper block settings control the FPGA's configuration
FPGA Configuration Image Source
0:1:1 Spartan-3AN Starter Kit Board only! This
mode configures a Spartan-3AN FPGA
using the internal In-System Flash memory.
This mode is not supported on the
Spartan-3A Starter Kit board.
0:0:0 Platform Flash PROM
Set the J46 jumper per
0:0:1 Select SPI Serial Flash PROM starting at
address 0
Select specific SPI Flash PROM using
Jumper J1 (Table 12-2, page
Disable the Platform Flash PROM via J46
jumper per Table
0:1:0 Parallel NOR Flash PROM, starting at
address 0 and incrementing through address
space.
Disable the Platform Flash PROM via J46
jumper per Table
1:0:1 Downloaded from host via USB-JTAG port
www.xilinx.com
Figure 4-1.
Table 4-2
93).
4-2.
4-2.
Configuration Mode Jumpers
J26 Jumper J46 Jumper
Settings Setting
M0
M1
M2
J26
DONE
M0
CE
M1
PROM
M2
GND
J46
J26
M0
M1
DISABLE
M2
J26
DONE
CE
PROM
GND
J46
M0
M1
M2
J26
M0
M1
M2
J26
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