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2 EZ-EXTENDER HARDWARE
REFERENCE
This chapter describes the hardware design of the Blackfin EZ-Extender.
The following topics are covered.
? “System Architecture” on page 2-1
Describes the configuration of the extender and explains how the
board components interface with the processor and EZ-KIT Lite.
? “DIP Switches and Jumpers” on page 2-4
Describes the function of the configuration DIP switches.
System Architecture
A detailed block diagram of the Blackfin EZ-Extender is shown in
Figure 2-1 . Note that the arrow in the bidirectional driver symbols
denotes the direction of the driver when in transmit mode. The bidirec-
tional driver is in transmit mode when the direction pin is pulled high.
Use the diagram in conjunction with information in “DIP Switches and
Jumpers” section of this manual to configure your Blackfin EZ-Extender.
Before using the EZ-Extender, familiarize yourself with the documenta-
tion and schematics of the target board and the EZ-KIT Lite. For
example, on the EZ-KIT Lite, it may be necessary to disable other devices
on the PPI, route the PPI clocks, and disable the push buttons.
The block diagram in Figure 2-1 shows that all of the interfaces have clock
signals, frame sync signals, data signals and, possibly, general-purpose sig-
nals. Each signal’s configuration depends on how your interface operates.
Blackfin EZ-Extender Manual
2-1
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