Chapter 8: Clock Sources - Xilinx Spartan-3 User Manual

R
Clock Sources
The Spartan-3 Starter Kit board has a dedicated 50 MHz Epson
oscillator source and an optional socket for another clock oscillator source.
provides a detailed schematic for the clock sources.
The 50 MHz clock oscillator is mounted on the bottom side of the board, indicated as
in
FPGAs Digital Clock Managers (DCMs).
•
The oscillator socket, indicated as
footprint.
Table 8-1: Clock Oscillator Sources
Spartan-3 Starter Kit Board User Guide
UG130 (v1.1) May 13, 2005
Figure A-5. Use the 50 MHz clock frequency as is or derive other frequencies using the
Using Digital Clock Managers (DCMs) in Spartan-3 FPGAs
http://www.xilinx.com/bvdocs/appnotes/xapp462.pdf
Oscillator Source
50 MHz (IC4)
Socket (IC8)
www.xilinx.com
1-800-255-7778
in Figure 1-2, accepts oscillators in an 8-pin DIP
15
FPGA Pin
Chapter 8
SG-8002JF series clock
Figure A-5
T9
D9
14
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