MPC564EVB User’s Manual
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Connectors and User Components
USE CAUTION
when connecting your LCD to the LCD-PORT - make sure the power polarity
(JP2) and correct placement of the LCD cable so that signals are correctly matched.
1.5.3 User Components
The EVB provides a set of user components that maybe applied in user applications or for testing
purposes. The components are interfaced via the J2 Socket Header and are not dedicated to any
particular MPC564 I/O signal. Provided are 4 push button switches (SW1 – 4), 4 LED Indicators
(LED1 – 4), and the user POT (RV1). Following are J2 connections and interface notes:
Table 1-10. J2 User Component I/O
BRK_EN Option
The BRK_EN or Break Enable option is provided to allow an IRQ0 NMI interrupt to occur on SW1
being pressed. This feature is provided to support the Monitor ABORT operation to stop user code
execution and return to the Monitor command prompt. When the option jumper is installed,
depressing SW1 will cause a low active level to be applied to the MPC564 IRQ0.
1.5.4 MPC564EVB Hardware Options
XFC Filter Capacitor C3
Capacitor C3 provides the XFC filtering for the PLL circuits. The capacitor may be changed by
the user if PLL locking problems are experienced at the frequency of operation selected or if the
reference crystal is replaced. Current value is 3.3nF.
J2 PIN
COMPONENT
NOTES
1
SW1
Active Low, also drives BRK_EN option
2
SW2
Active high, +5V
3
SW3
Active high, +5V
4
SW4
Active high, +5V
5
LED1
Active High
6
LED2
Active High
7
LED3
Active High
8
LED4
Active High
9
RV1 – Center Tap
0 – 5V
10
RV1 +Input or reference
+5V, open O4 option to change
11
RV1 –Input or reference
Ground, open O5 option to change
12
GROUND
Meter or probe ground / common
Содержание MPC564EVB
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Страница 10: ...Contents Paragraph Number Title Page Number iv MPC564EVB User s Manual MOTOROLA ...
Страница 50: ...2 12 MPC564EVB User s Manual System Power up and Initial Operation ...
Страница 92: ...3 42 MPC564EVB User s Manual System Call Functions ...
Страница 98: ...B 4 MPC564EVB User s Manual Troubleshooting Network Problems ...