Clock sources, Overview, Chapter 3: clock sources – Xilinx MIcroblaze Development Spartan-3E 1600E User Manual
Page 21: Chapter 3, “clock sources, Chapter 3
MicroBlaze Development Kit Spartan-3E 1600 Edition User Guide
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UG257 (v1.1) December 5, 2007
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Chapter 3
Clock Sources
Overview
As shown in
, the MicroBlaze Development Kit board supports three primary
clock input sources, all of which are located below the Xilinx logo, near the Spartan-3E
logo.
x
The board includes an on-board 50 MHz clock oscillator.
x
The user clock socket is populated with a 66 MHz oscillator
x
Clocks can be supplied off-board via an SMA-style connector. Alternatively, the FPGA
can generate clock signals or other high-speed signals on the SMA-style connector.
x
Optionally install a separate 8-pin DIP-style clock oscillator in the supplied socket
.
Figure 3-1:
Available Clock Inputs
On-Board 50 MHz Oscillator
CLK_50MHz:[C9]
Bank 0, Oscillator Voltage
(Controlled by Jumper JP9)
SMA Connector
8-Pin DIP Oscillator Socket
CLK_AUX:[B8]
Spartan-3E
Development Board
UG257_03_01_061306