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參數資料
| 型號： | EM08MR32UM |
| 元件分類： | 線性穩(wěn)壓 |
| 英文描述： | Dual Regulator-Synchronous Rectified Buck PWM and Linear Power Controller; Temperature Range: 0°C to 70°C; Package: 16-QFN |
| 中文描述： | M68EM08MR32 M68EM08MR32仿真模塊用戶手冊 |
| 文件頁數： | 9/42頁 |
| 文件大小： | 487K |
| 代理商： | EM08MR32UM |
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Configuration and Operation
Setting Jumper Headers
M68EM08MR32 Emulator Module
User’s Manual
MOTOROLA
Configuration and Operation
17
2.3.1 Clock Source Selection Header (W1)
Jumper header W1 in Figure 2-1 determines the clock signal source. The
factory configuration (the fabricated jumper between pins 3 and 4) selects the
canned oscillator at board location XY2. (The factory installs a
4.9152-megahertz oscillator at location XY2, but any other appropriate
oscillator may be substituted.)
.
Figure 2-1. Jumper Header W1
Alternately, two other clock signal sources can be selected, as shown in
Figure 2-1. To use the MMDS as your clock source:
1.
Install the jumper between pins 1 and 2 on jumper header W1
2.
Use the appropriate system software command to select a frequency.
You may also use a user-supplied crystal as your clock-signal source. To use
your own crystal:
1.
Install the jumper between pins 5 and 6 on jumper header W1
2.
Install a C-2 size crystal at board location Y1
3.
Install these additional components:
–
A 9.1 M
resistor at location R9
–
A 200 k
resistor at location R12
–
A 27 pf capacitor at location C28
–
A 22 pf capacitor at location C32
NOTE:
Only one jumper should be inserted on jumper header W1 at a time. Inserting
multiple jumpers in W1 might damage the MR32EM.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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