Block Diagram; Power Supply - Humandata Spartan-3 User Manual

2.2. Block Diagram

3.3 V INPUT
Oscillator
48
MHz
18.432 MHz
SDRAM
(256 Mbit)
POR Signal
Power Circuit
2.5V, 1.2V
Power LED
(3.3V)
3.3 V INPUT

2.3. Power Supply

This board operates from single DC 3.3 V power supply.
The external power supply should be sufficient and stabilized.
Notes
XCM-005 Series v1.0
User I/Os CNB
Spartan-3
PROG_B
XC3S1000/1500/2000
RESET
-4FGG456C
User I/Os CNA
Please apply power to CNA and CNB with thick print
pattern or cable. Please connect all ground pins.
50
50
4
External CLK
Config. Jumper
Config. Device
XCF04S
(4 Mbit)
(1500/2000 only)
Config. Device
XCF04S
(4 Mbit)
JTAG
JTAG
Buffer
User LED
DONE LED
External CLK