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■ Setting the Clock Selector Jumper Plugs
Figure 5.2-2 shows the factory settings of the jumper plugs; Table 5.2-1 shows how to set the clock
selector jumper plugs.
Figure 5.2-3 Setting the Clock Selector Jumper Plugs (Factory Setting)
Table 5.2-1 Jumper Plug Settings
* : There is no function to supply a clock signal from the adapter to the user system.
Note : To supply a main clock signal from the user system, prepare an oscillation circuit on the user system
and use, for example, a CMOS buffer for buffering before the signal is supplied.
As supplying a subclock signal from the user system may result in unstable operation, be sure to supply
the subclock signal from the adapter board.
Jumper plug
name
Setting Clock supply
X0,X1
USR side Supply main clock signal from user system.
EML side
Supply main clock signal from oscillator IC socket on adapt-
er.
X0A,X1A EML side Supply sub clock signal from oscillator IC socket on adapter.
X0
USR EML
X1
X0A
USR EML
X1A
X0/X1
X0A/X1A
Chapter 5 Usage