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Motorola MC68VZ328 Manuale Utente

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10-4
MC68VZ328 User’s Manual
I/O Port Operation
10.2.3  
Summary of Port Behavior During Reset
Table 10-2 summarizes the behavior of all MC68VZ328 I/O ports during the Reset Assertion Time Length 
(see Figure 10-1 on page 10-3) for power-up resets and warm resets.
10.3   
I/O Port Operation
The following subsections describe details of the I/O ports’ operation.
10.3.1  
Data Flow from the I/O Module
The operation of a port connected to another module in the MC68VZ328 is illustrated in Figure 10-2 on 
page 10-5.
Table 10-2.   MC68VZ328 I/O Port Status During the Reset Assertion Time Length
I/O Ports
Warm Reset
Power-up Reset
A
Resets to default state
Resets to default state
B
Maintains previous state
Unknown state
C
Resets to default state
Resets to default state
D
Resets to default state
Resets to default state
E
Resets to default state
Resets to default state
F
Resets to default state
Resets to default state
G
Resets to default state
Resets to default state
J
Resets to default state
Resets to default state
K
Resets to default state
Resets to default state
M
Maintains previous state
Unknown state
Note:
The default state is defined by the reset values of the corresponding I/O port’s registers. Please refer to