NEC IE-784225-NS-EM1, Руководство пользователя

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CHAPTER 3 INSTALLATION
User’s Manual U13742EJ2V0UM
25
(b) When using a crystal oscillator
•
Items to be prepared
•
Crystal oscillator (see pinouts shown in Figure 3-7)
Figure 3-7. Crystal Oscillator (When Using Main System Clock or User-Mounted Clock)
V
CC
CLOCK OUT GND
NC
<Steps>
<1> Prepare the IE-784225-NS-EM1.
<2> Remove the crystal oscillator that is mounted in the IE-784225-NS-EM1’s socket (the socket
marked as UMCLK).
<3> Connect the crystal oscillator (from <2> above) to the socket (UMCLK) from which the crystal
oscillator was removed. Insert the crystal oscillator pin into the socket aligning the pins as shown in
the figure below.
Figure 3-8. Pin Alignment of Crystal Oscillator and Socket
Crystal Oscillator Pin Name Socket Pin No.
NC 1
GND 7
CLOCK OUT 8
V
CC
14
<4> Install the IE-784225-NS-EM1 in the IE-78K4-NS.
14
13
12
11
10
9
8
V
CC
CLOCK OUT
GND
NC
1
2
3
4
5
6
7
Crystal oscillator
Socket