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  9. Xilinx Spartan-3A DSP FPGA Series Quick start guide

Xilinx Spartan-3A DSP FPGA Series Quick start guide

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Spartan-3A/3AN Starter Kit Board Schematic
(Annotated)
21-AUG-2007
For additional information …
www.xilinx.com/s3astarter
See UG334: Spartan-3A/3AN Starter Kit User Guide for further information on each board feature
Spartan-3A/3AN Starter Kit Board
TM
FX2 Expansion Connector, 6-pin Headers
Hirose FX2 100-pin Expansion Connector
Connectorless Debugging Port Landing Pads
Six-pin Accesory Headers
DAC Analog Outputs
ADC Analog Inputs
FX2 Expansion
Connector
Six-pin
Accessory
Headers
Connectorless
Debugging Port
ADC
Inputs
DAC
Outputs
Spartan-3A/3AN Starter Kit Board
TM
RS-232, VGA, Audio ports, SMA connector
Stereo Audio mini jack
PS/2 Mouse/Keyboard connector
Clock Input/Output SMA connector
RS-232 serial ports
12-bit VGA port
SPI PROM select jumpers
VGA
PS/2
Audio jack
Clock SMA
SPI select
jumper
RS-232
DCE DTE
The PS/2 connector has primary and secondary connections to
the FPGA. The secondary connections are available by
attaching an external Y-splitter cable.
Primary DATA
Secondary DATA
Primary CLK
Secondary CLK
NOTE: See schematic Page 13 for details.
Spartan-3A/3AN Starter Kit Board
TM
10/100 Ethernet PHY, magnetics
RJ-45 Connector
LAN8700 10/100 Ethernet PHY
www.smsc.com/main/catalog/lan8700.html
LAN8700 10/100 Ethernet PHY
RJ-45 Connector
Spartan-3A/3AN Starter Kit Board
TM
Voltage regulators
www.national.com/pf/LP/LP3906.html
Voltage
FPGA core
supply
FPGA I/O
Banks 0, 1, 2
FPGA auxiliary
supply
Embedded
USB / JTAG
Programmer
Bank 0
Bank 2
Bank 1
Bank 3
(1.2V)
(3.3V)
(3.3V)
(1.8V)
FPGA
FPGA
DDR2 SDRAM
Termination
(0.9V)
DDR2 SDRAM
Device, FPGA
(1.8V)
DAC Reference
Voltage
(3.3V)
DDR2 SDRAM
Voltage Ref.
(0.9V)
I C Interface
2
I C Interface
2
regulators
Power switch
Wall power adapter
input
I/O Bank 3
Spartan-3A/3AN Starter Kit Board
TM
Configuration, Mode pins, Platform Flash PROM
SUSPEND pin, JTAG header
Second 4 Mbit
Platform Flash PROM
is not mounted
Platform Flash Enable
FPGA Mode Select jumper
JTAG Header
Platform
Flash
PROM
FPGA Configuration Control
SUSPEND
slide switch
PROG_B
jumper
DONE
LED
DONE LED
PROG_B
pushbutton
PROG_B pushbutton
SUSPEND switch
JTAG Header
Platform Flash PROM
(Jumper J26)
M0
M1
M2
J26
Master Serial
M0
M1
M2
J26
Master SPI
M0
M1
M2
J26
Master BPI
M0
M1
M2
J26
JTAG
M0
M1
M2
J26
Master Internal SPI
Platform Flash Enable Jumper
(Jumper J46)
(Spartan-3AN only)
DONE
CE
GND
J46
PROM
DONE
CE
GND
J46
PROM
DONE
CE
GND
J46
PROM
Platform Flash Enable Jumper
(Jumper J46)
DISABLE Enable
only during
configuration
Enable
Always
Also enable
Platform Flash
PROM using
Jumper J46
Disable Platform Flash PROM
by removing Jumper J46
(Jumper J46)
Spartan-3A/3AN Starter Kit Board
TM
FPGA I/O Bank 0 and Bank 1, Clock Oscillators
50 MHz Oscillator Auxiliary Oscillator Socket
CLK_50MHZ CLK_AUX
FPGA
Bank 1
FPGA
Bank 0
FPGA: XC3S700A/AN-4FGG484C(E FPGA: XC3S700A/AN-4FGG484C(ES)
Spartan-3A/AN Starter Kit Board
TM
FPGA I/O Bank 2 and Bank 3
FPGA
FPGA
Bank 2
Bank 3
AWAKE
LED
FPGA I/O Bank 3
is dedicated to the
DDR2 SDRAM
interface
interface
FPGA: XC3S700A/AN-4FGG484C(ES)
FPGA: XC3S700A/AN-4FGG484C(ES)
Spartan-3A/3AN Starter Kit Board
TM
FPGA Power Supply Decoupling
Spartan-3A/3AN Starter Kit Board
TM
ADC, DAC, and Pre-amplifier
www.linear.com
ADC, DAC,
pre-amplifier
headers
Analog
Analog-to-Digital Converter (ADC)
LTC1407-1, two-channel, 12-bit resolution, serial
www.linear.com/pc/productDetail.do?navId=H0,C1,C1155,C1001,C1158,P2484
Digital-to-Analog Converter (DAC)
LTC2624, four-channel, 12-bit resolution, serial
www.linear.com/pc/productDetail.do?navId=H0,C1,C1155,C1005,C1156,P2048
(3.3V)
(nominally 3.3V)
The DAC_REF_CD voltage is programmable via the
I2C control interface on the LP3906 voltage regulator
designated as IC18 on sheet 5. At power-up, this
reference voltage is 3.3V.
(see sheet 2)
Thevenin termination to improve
the signal integrity on these
high-fanout signals.
Programmable Gain Amplifier (AMP)
LTC6912-1, two-channel, serial
www.linear.com/pc/productDetail.do?navId=H0,C1,C1154,C1009,C1121,P7596