Xilinx Spartan-3A Schematic page 6

JTAG Header
FPGA Configuration Control
SUSPEND
slide switch
FPGA Mode Select jumper
(Jumper J26)
Master Serial
Also enable
M0
Platform Flash
M1
PROM using
Jumper J46
M2
J26
Disable Platform Flash PROM
by removing Jumper J46
(Spartan-3AN only)
Master BPI
Master SPI
Master Internal SPI
M0 M0
M1 M1
M2 M2
J26 J26
PROG_B
jumper
PROG_B
pushbutton
Platform Flash PROM
Platform Flash Enable Jumper
(Jumper J46)
JTAG
M0
M1
M2
J26
M0
M1
M2
J26
Platform Flash Enable
(Jumper J46)
DONE
LED
Platform Flash Enable Jumper
(Jumper J46)
DONE
DONE
DONE
CE
CE
CE
PROM
PROM
PROM
GND
GND
GND
J46
J46
J46
Enable Enable
DISABLE
only during Always
configuration
JTAG Header
SUSPEND switch
PROG_B pushbutton
DONE LED
Configuration, Mode pins, Platform Flash PROM
SUSPEND pin, JTAG header
Platform
Flash
PROM
Second 4 Mbit
Platform Flash PROM
is not mounted
Spartan-3A/3AN Starter Kit Board
TM